Camera unit

Abstract

Provided is a camera unit capable of improving security. To this end, provided is a camera unit provided on the top surface of a refrigerator, the camera unit comprising a case member and an electronic circuit part housed in the case member, the electronic circuit part being surrounded by a flame-retardant material.

Description

Technical Field

[0001] The present disclosure relates to a camera unit. Background Art

[0002] Patent Document 1 discloses a technique of providing a camera at the upper part of a cold storage that performs shooting when an object passing through an opening of the cold storage is detected.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2019-070476 Summary of the Utility Model

[0006] Problems to be Solved by the Utility Model

[0007] The present disclosure provides a camera unit capable of improving safety.

[0008] Technical Solutions for Solving the Problems

[0009] The camera unit in the present disclosure is a camera unit provided on the top surface of a cold storage, and includes a housing member and an electronic circuit portion housed in the housing member, and the electronic circuit portion is surrounded by a flame-retardant material.

[0010] In the above structure, the electronic circuit portion may at least include a first substrate that controls power supply.

[0011] In the above structure, the electronic circuit portion further includes a second substrate that controls the camera and a third substrate that controls respective portions different from the first substrate and the second substrate.

[0012] In the above structure, the electronic circuit portion may further include the camera.

[0013] In the above structure, it further includes a metal plate that covers the electronic circuit portion when viewed from above, the housing member is formed of a flame-retardant resin, and the electronic circuit portion may be surrounded by the housing member and the metal plate.

[0014] In the above structure, a partition portion may be formed in the housing member to surround a region of the housing member where the electronic circuit portion is disposed.

[0015] In the above structure, the partition portion includes a notch portion through which wiring routed from the outside of the region passes inside the housing member, and the metal plate can be formed such that a gap between the metal plate and an end portion of a portion other than the notch portion in the partition portion is equal to or less than a specified interval.

[0016] In the above structure, a cover member covering the opening surface of the housing member may be included, and a contact portion pressing the metal plate against the partition portion is formed on the back surface of the cover member.

[0017] Effect of the utility model

[0018] The electronic circuit portion of the camera unit in the present disclosure is covered with a flame retardant material. Therefore, assuming that a fire breaks out in the electronic circuit portion, the spread of combustion can be suppressed. Thereby, the safety of the camera unit can be improved. Description of the drawings

[0019] Figure 1 is a front view of the camera unit and the refrigerator.

[0020] Figure 2 is Figure 1 a sectional view taken along line II-II of

[0021] Figure 3 is a front view of the camera unit and the refrigerator with the door open.

[0022] Figure 4 is a perspective view of the camera unit as viewed from above.

[0023] Figure 5 is a perspective view of the camera unit as viewed from below.

[0024] Figure 6 is an exploded perspective view of the camera unit.

[0025] Figure 7 is an exploded perspective view of the camera unit with the metal plate removed from the housing member.

[0026] Figure 8 is a top view of the housing member.

[0027] Figure 9 is a sectional view of the camera unit.

[0028] Figure 10 is at Figure 8 a perspective view of the housing member cut along the X-X section of

[0029] Figure 11 is a top view of the cover member as viewed from below.

[0030] Figure 12 is a perspective view of the cover member as viewed from below.

[0031] Description of reference numerals

[0032] 1 Camera unit

[0033] 20 Housing member

[0034] 23 Separation part

[0035] 30 Cover member

[0036] 31 Heat dissipation holes

[0037] 33 Contact part

[0038] 40 Metal plate

[0039] 40X Rear part of the plate

[0040] 40Y Central part of the plate

[0041] 40Z Front part of the plate

[0042] 45 Heat dissipation part

[0043] 47 Protrusion

[0044] 49 Heat transfer inhibition part

[0045] 51 Power supply substrate (first substrate)

[0046] 53 Sensor substrate (third substrate)

[0047] 55 SoC substrate (second substrate)

[0048] 61 Wide-angle camera (camera)

[0049] 63 Narrow-angle camera (camera)

[0050] R1 Area Detailed implementation mode

[0051] (Insights and the like that form the basis of the present disclosure)

[0052] When the inventors conceived of the present disclosure, there was already a technology in which a camera that performs shooting when detecting an object passing through an opening of a refrigerator was provided above the refrigerator.

[0053] However, the electronic circuit part of the camera unit including the camera generates heat, so there is a concern that the camera unit becomes relatively hot. Therefore, the inventors found the problem that if heat dissipation is not performed efficiently when the electronic circuit part generates heat, there is a concern that safety cannot be ensured in the event of a fire, and the present disclosure was configured to solve this problem.

[0054] Accordingly, the present disclosure provides a camera unit capable of improving safety.

[0055] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, sometimes detailed descriptions that are more than necessary are omitted. For example, sometimes detailed descriptions of well-known matters or repeated descriptions of substantially the same structures are omitted.

[0056] In addition, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present utility model, and are not intended to limit the subject matter recited in the claims of the patent.

[0057] (Embodiment 1)

[0058] [1-1. Structure]

[0059] Figure 1 is a front view of the camera unit 1 and the refrigerator 100 according to Embodiment 1. Figure 2 is Figure 1 of Figure 1 a sectional view taken along line II-II, showing a cross-section perpendicular to the left-right direction. In the following description, the direction indicated by the symbol X in the figure is taken as the left direction, the direction indicated by the symbol Y is taken as the front direction, and the direction indicated by the symbol Z is taken as the upward direction.

[0060] [1-1-1. Structure of the refrigerator]

[0061] As Figure 1 and Figure 2 shown, the refrigerator 100 includes a main cabinet 120 with an opening on the front surface. A refrigerating chamber 121, an ice-making chamber 122, a fresh freezing chamber 123, a freezing chamber 124, and a vegetable chamber 125 are formed in the main cabinet 120. These storage chambers are cooled by cold air. Horizontally-opening doors 121A and 121B are provided at the opening on the front surface of the refrigerating chamber 121. Figure 3 is a front view of the refrigerator 100 with the camera unit 1 and the doors 121A and 121B open.

[0062] In the ice-making chamber 122, the fresh freezing chamber 123, the freezing chamber 124, and the vegetable chamber 125, drawers 122A, 123A, 124A, and 125A capable of storing items are respectively provided. In the installed state, the top surfaces of the drawers 122A to 125A are open.

[0063] The camera unit 1 is provided on the upper surface, i.e., the top surface 120A, of the outside of the main cabinet 120 of the refrigerator 100. The top surface 120A of the main cabinet 120 is made of metal. In addition, the metal constituting the top surface 120A is a metal such as iron adsorbed by a magnet 59.

[0064] [1-1-2. Structure of the camera unit]

[0065] Figure 4 is a perspective view of the camera unit 1, showing the camera unit 1 as viewed from above. Figure 5 is a perspective view of the camera unit 1, showing the camera unit 1 as viewed from below. Figure 6 is an exploded perspective view of the camera unit 1, showing the camera unit 1 with the cover member 30 removed from the housing member 20.Figure 7 This is an exploded perspective view of the camera unit 1, showing the camera unit 1 in a state where the cover member 30 and the metal plate 40 are removed from the housing member 20.

[0066] The camera unit 1 includes a housing member 20, a cover member 30, and a metal plate 40 housed inside the housing member. The housing member 20 is a rectangular member when viewed from above. The housing member 20 is composed of a base portion 21A located at the rear and provided on the top surface 120A, and a photographing portion 21B that extends forward from the base portion 21A and has a predetermined gap with respect to the top surface 120A.

[0067] The housing member 20 is made of a flame-retardant resin. As the flame-retardant resin, for example, an ABS resin added with a flame retardant can be cited.

[0068] At the outer corners of the bottom surface 22A of the base portion 21A, feet 22A1 are respectively provided. The feet 22A1 are members that set the housing member 20 with a predetermined gap with respect to the top surface 120A and are formed of, for example, rubber.

[0069] A position restricting portion 26 that extends downward is formed on the front end surface 21A1 of the base portion 21A. The position restricting portion 26 is formed in a flat plate shape perpendicular to the front-rear direction. The position restricting portion 26 contacts the front edge 120B of the main body 120 of the refrigerator 100 from the front. The position restricting portion 26 restricts the backward movement of the camera unit 1 by contacting the front edge 120B.

[0070] A first positioning portion 26A is provided on the front surface of the position restricting portion. In the present embodiment, the first positioning portion 26A is a mark that can be visually recognized from the front. The first positioning portion 26A is provided at the center in the left-right direction of the camera unit 1.

[0071] Figure 8 This is a top view of the housing member 20.

[0072] As Figure 7 and Figure 8 shown, a power supply substrate 51 is fixed to the base portion 21A. The power supply substrate 51 is connected to an external power supply and supplies power required for the operation of each part of the camera unit 1. The power supply substrate 51 is an example of the "substrate" in the present disclosure.

[0073] The power supply board 51 is connected to a power supply cable bundle 51B capable of transmitting power. The power supply cable bundle 51B is arranged inside the housing member 20 on the right side of the power supply board 51. The power supply cable bundle 51B extends from the rear end of the housing member 20 to the outside of the housing member 20 and is connected to an external power supply. The power output from the external power supply is supplied to the power supply board 51 via the power supply cable bundle 51B. In the present embodiment, the power supply cable bundle 51B is connected to a 100V industrial frequency power supply. Additionally, the power supply cable bundle 51B may also be connected to the power supply board of the refrigerator 100. At this time, the camera unit 1 and the refrigerator 100 may also be connected via a USB cable or a cable harness.

[0074] A sensor board 53 is fixed to the base portion 21A. The sensor board 53 is a board for receiving and transmitting signals between various sensors such as a distance measuring sensor 65, a thermopile 67, and an illuminance sensor 69 provided in the camera unit 1. The sensor board 53 is located on the left side of the power supply board 51. The sensor board 53 is an example of the "board" in the present disclosure.

[0075] An SoC (System on a Chip) board 55 is fixed to the imaging unit 21B. The SoC board 55 is a board for controlling the wide-angle camera 61 and the narrow-angle camera 63. The SoC board 55 is connected to the wide-angle camera 61 and the narrow-angle camera 63 via two FFC (Flexible Flat Cable) cables 83. The SoC board 55 is an example of the "board" in the present disclosure.

[0076] In the housing member 20, a partition portion 23 is formed at a position surrounding the power supply board 51 in a top view. Further, the sensor board 53, the SoC board 55, the wide-angle camera 61, and the narrow-angle camera 63 are arranged inside the partition portion 23. The partition portion 23 is formed in a shape protruding upward from the base portion 21A and the imaging unit 21B.

[0077] As Figure 7 and Figure 8 shown, a wide-angle camera 61 and a narrow-angle camera 63 are mounted at the front end of the imaging unit 21B of the housing member 20.

[0078] The wide-angle camera 61 images various parts of the refrigerator 100 including the refrigerating chamber 121. The narrow-angle camera 63 images the range including the drawers 122A, 123A, 124A, and 125A. Additionally, the camera unit may also image the items taken out and put into the refrigerating chamber 121, the ice-making chamber 122, the fresh freezing chamber 123, the freezing chamber 124, and the vegetable chamber 125.

[0079] Figure 9 is a cross-sectional view of the camera unit 1, showing the cross-section obtained by cutting the camera unit 1 at the center in the left-right direction.Figure 10 is a perspective view of the camera unit 1, showing the camera unit 1 in a state cut along the Figure 8 X-X cross section.

[0080] As Figures 7 to 10 shown, the metal plate 40 is a component made of a thin metal sheet. The metal plate 40 is fixed relative to the photographing unit 21B via fastening components such as screws, bolts, and nuts. The metal plate 40 covers the entire inner surface of the partition portion 23 from above.

[0081] That is, the metal plate 40 covers the power supply substrate 51, the sensor substrate 53, the SoC substrate 55, the wide-angle camera 61, and the narrow-angle camera 63, and seals the region R1 surrounded by the partition portion 23.

[0082] The metal plate 40 includes a plate rear portion 40X that overlaps the power supply substrate 51 and the sensor substrate 53 in a plan view. A rib 43 is formed at the front end of the plate rear portion 40X. The rib 43 stands upward from the entire width in the left-right direction at the front end of the plate rear portion 40X.

[0083] At the front end portion of the plate rear portion 40X, a plate central portion 40Y that extends forward from the upper end of the rib 43 is integrally formed. The plate central portion 40Y is disposed across the base portion 21A and the photographing unit 21B in a plan view. The plate central portion 40Y is disposed at a position higher than the plate rear portion 40X. The plate central portion 40Y covers the SoC substrate 55 from above.

[0084] A heat dissipation portion 45 that is recessed downward is formed at approximately the central portion of the plate central portion 40Y. The heat dissipation portion 45 contacts the upper surface of the heat generating element mounted on the SoC substrate 55 via a heat conductive sheet 55A. Thereby, the heat of the heat generating element can be quickly transferred to the metal plate 40.

[0085] At the front end portion of the plate central portion 40Y, a plate front portion 40Z is integrally formed, and its height is formed lower than that of the plate central portion 40Y. The plate front portion 40Z covers the wide-angle camera 61 and the narrow-angle camera 63 from above.

[0086] The plate front portion 40Z contacts the upper surfaces of the wide-angle camera 61 and the narrow-angle camera 63 via a heat conductive sheet. Thereby, the heat of the wide-angle camera 61 and the narrow-angle camera 63 can be quickly transferred to the metal plate 40.

[0087] As Figure 9 shown, a heat dissipation hole 31 is formed at a position behind the cover member 30 and corresponding to the power supply substrate 51. The heat dissipation hole 31 is a hole that penetrates the cover member 30 and communicates the inside and the outside of the housing member 20. In the present embodiment, the heat dissipation hole 31 is a hole formed with its length direction as the left-right direction, and a plurality of them are arranged in the front-rear direction.

[0088] The heat dissipation holes 31 enable the air to flow in and out between the inside and the outside of the housing member 20. Thereby, it is easy to discharge the heat generated from the power supply substrate 51 or the like to the outside of the housing member 20 by convective heat transfer.

[0089] Figure 11 It is a top view of the cover member 30 observed from below. Figure 12 It is a perspective view of the cover member 30 observed from below.

[0090] The cover member 30 includes a contact portion 33 on the back surface that overlaps with the partition portion 23 in a top view. The contact portion 33 has a rear contact portion 33X, a central contact portion 33Y, and a front contact portion 33Z. In addition, these rear contact portion 33X, central contact portion 33Y, and front contact portion 33Z are sometimes collectively referred to as the contact portion 33.

[0091] The rear contact portion 33X is mainly formed at a position overlapping with the partition portion 23 that surrounds the portion where the power supply substrate 51 and the sensor substrate 53 are mounted. The rear contact portion 33X presses the rear plate portion 40X of the metal plate 40 against the partition portion 23.

[0092] The portion of the rear contact portion 33X formed in the front-rear direction has an uneven shape. Therefore, even when liquid enters from the heat dissipation holes 31, the liquid does not accumulate on the rear plate portion 40X and can drain.

[0093] The central contact portion 33Y is mainly formed at a position overlapping with the partition portion 23 that surrounds the portion where the SoC substrate 55 is mounted. The central contact portion 33Y presses the central plate portion 40Y of the metal plate 40 against the partition portion 23.

[0094] The front contact portion 33Z is mainly formed at a position overlapping with the partition portion 23 that surrounds the portion where the wide-angle camera 61 and the narrow-angle camera 63 are mounted. The front contact portion 33Z presses the front plate portion 40Z of the metal plate 40 against the partition portion 23.

[0095] The cover member 30 includes a rib 35 on the back surface that overlaps with the rib 27 in a top view.

[0096] As Figure 7 and Figure 8 shown, the housing member 20 forms a rib 27 between the SoC substrate 55 and the wide-angle camera 61 and the narrow-angle camera 63. The rib 27 and the rib 35 are formed to be substantially of the same type. The rib 27 and the rib 35 enclose the region R1 in such a manner that the region R1 does not expose to the outside from the heat transfer suppression portion 49 that is the gap of the metal plate 40.

[0097] In addition, as Figure 9 shown, the housing member 20 includes a magnetic housing 57. Figure 8This shows a state where the magnetic shell 57 is removed and the magnet 59 is exposed. If there is no magnetic shell 57, the region R1 is exposed to the outside from the part where the magnet 59 is installed, and the sealing performance of the region R1 decreases. The magnetic shell 57 can improve the sealing performance of the region R1.

[0098] The partition portion 23 includes a plurality of notch portions 25 through which the wiring 81 passes. The wiring 81 is routed through the notch portions 25 and is sealed by a sealing member 58. The sealing member 58 is, for example, resin or sponge.

[0099] The wide-angle camera 61 and the narrow-angle camera 63 correspond to an example of the "camera". The power supply substrate 51 corresponds to an example of the "first substrate". The SoC substrate 55 corresponds to an example of the "second substrate". The sensor substrate 53 corresponds to an example of the "third substrate". The region R1 corresponds to an example of the "region of the housing member in which the electronic circuit portion is disposed".

[0100] In addition, the electronic circuit portion is a component including the power supply substrate 51. The electronic circuit portion may further include at least any one of the SoC substrate 55, the sensor substrate 53, the wide-angle camera 61, and the narrow-angle camera 63. The electronic circuit portion in the present embodiment may also include all of the power supply substrate 51, the SoC substrate 55, the sensor substrate 53, the wide-angle camera 61, and the narrow-angle camera 63.

[0101] [1-2. Function, etc.]

[0102] For the camera unit 1 configured in the above manner, its function, etc. will be mainly described with reference to Figure 6 , 7 , 8, 11, 12.

[0103] The sensor substrate 53 and the SoC substrate 55 can theoretically output more than 15 W of power. Further, the wide-angle camera 61 and the narrow-angle camera 63 can also output more than 15 W of power. The electronic circuit portion is surrounded by a flame-retardant material. The lower part of the electronic circuit portion, which is a heat-generating component, is covered by the housing member 20 made of flame-retardant ABS (Acrylonitrile Butadiene Styrene), and the upper part is covered by the non-combustible metal plate 40. Therefore, the safety of the camera unit 1 can be improved. In addition, since the metal plate 40 has high thermal conductivity, the region R1 can be sealed and the heat dissipation efficiency can be improved.

[0104] In addition, the sides of the electronic circuit portion, the wide-angle camera 61, and the narrow-angle camera 63 are separated inside the housing member 20 by the partition portion 23. Therefore, the safety of the camera unit 1 can be improved. In addition, the partition portion 23 and the housing member 20 are made of the same material.

[0105] The contact portion 33 presses the metal plate 40 downward, reducing the gap between the partition portion 23 and the metal plate 40. It is arranged such that the gap between the portion of the upper end of the partition portion 23 other than the notch portion 25 and the metal plate 40 becomes equal to or less than a specified interval. The specified interval is, for example, 0.5 mm. Since the gap between the metal plate 40 and the partition portion 23 becomes smaller, it is possible to suppress the intrusion of intruders such as insects into the area R1, reduce the risk of failure of the camera unit 1, and improve safety. Since the refrigerator 100 is installed in the kitchen, insects are likely to appear, and reducing the gap between the metal plate 40 and the partition portion 23 is particularly preferable for the camera unit 1 provided in the refrigerator 100.

[0106] [1-3. Effects, etc.]

[0107] As described above, the camera unit 1 is a camera unit 1 provided on the top surface 120A of the refrigerator 100, and includes a housing member 20 and an electronic circuit portion housed in the housing member 20, and the electronic circuit portion is surrounded by a flame retardant material.

[0108] Thus, since the electronic circuit portion is covered with a flame retardant material, it is possible to suppress the spread of combustion in the event of a fire in the electronic circuit portion. Thereby, the safety of the camera unit 1 can be improved.

[0109] In addition, the electronic circuit portion may at least include a power supply board 51 that controls the power supply.

[0110] Thus, the power supply board, which is likely to generate heat, is covered with a flame retardant material. Therefore, in the event of a fire in the power supply board, it is possible to suppress the spread of combustion. Thereby, the safety of the camera unit 1 can be improved.

[0111] In addition, the electronic circuit portion may further include a SoC board 55 that controls the wide-angle camera 61 and the narrow-angle camera 63, and a sensor board 53 that controls various parts different from the SoC board 55 and the power supply board 51.

[0112] Thus, the heat-generating SoC board 55 and the sensor board 53 are covered with a flame retardant material. Therefore, in the event of a fire in at least one of the SoC board 55 and the sensor board 53, it is possible to suppress the spread of combustion. Thereby, the safety of the camera unit 1 can be improved.

[0113] In addition, the electronic circuit portion may further include a wide-angle camera 61 and a narrow-angle camera 63.

[0114] Thus, the heat-generating wide-angle camera 61 and narrow-angle camera 63 are covered with a flame retardant material. Therefore, in the event of a fire in either the wide-angle camera 61 or the narrow-angle camera 63, it is possible to suppress the spread of combustion. Thereby, the safety of the camera unit 1 can be improved.

[0115] In addition, it further includes a metal plate 40 that covers the electronic circuit portion when viewed from above. The housing member 20 is formed of a flame-retardant resin, and the electronic circuit portion is surrounded by the housing member 20 and the metal plate 40.

[0116] Thus, the electronic circuit portion is covered by the flame-retardant housing member 20 and the non-combustible metal plate 40. Therefore, assuming a fire occurs in the electronic circuit portion, the spread of combustion can be suppressed. Thereby, the safety of the camera unit 1 can be improved.

[0117] In addition, a partition portion 23 that surrounds a region R1 of the housing member 20 where the electronic circuit portion is disposed may be formed in the housing member 20.

[0118] Thus, the electronic circuit portion is concentrated in a part inside the housing member 20. Therefore, the electronic circuit portion can be covered with non-combustible or flame-retardant components, and furthermore, the safety of the camera unit 1 can be improved.

[0119] In addition, the partition portion 23 includes a notch portion 25 through which a wiring 81 routed from the outside of the region R1 passes inside the housing member 20, and the metal plate 40 can be formed such that the gap between the metal plate 40 and the end portions of the partition portion 23 other than the notch portion 25 is below a specified interval.

[0120] Thus, even in places such as kitchens where bugs are likely to occur, it is possible to prevent bugs from invading the electronic circuit portion, and the safety of the camera unit 1 can be improved. In addition, the region R1 where the electronic circuit portion is disposed is sealed, so the safety of the camera unit 1 can be improved.

[0121] In addition, a cover member 30 that covers the opening surface of the housing member 20 may be included, and a contact portion 33 that presses the metal plate 40 against the partition portion 23 is formed on the back surface of the cover member 30.

[0122] Thus, the region R1 where the electronic circuit portion is disposed is sealed, so the safety of the camera unit 1 can be improved.

[0123] (Other embodiments)

[0124] As described above, the above embodiments have been illustrated as examples disclosed in the present application. However, the technology in the present utility model is not limited to this, and it can also be applied to embodiments with changes, replacements, additions, omissions, etc. In addition, the respective constituent elements described in the above embodiments can be combined to form a new embodiment.

[0125] Therefore, hereinafter, other embodiments will be exemplified.

[0126] The region R1 in the above-described embodiment is one space divided by the partition portion 23, but is not limited thereto, and may also be a plurality of spaces. For example, a structure may be adopted in which another partition portion that only partitions the wide-angle camera 61 and the narrow-angle camera 63 is provided and used as the region R1 for partitioning. In addition, the wide-angle camera 61 and the narrow-angle camera 63 may not be surrounded by a flame-retardant material.

[0127] In addition, since the above-described embodiment is for illustrating the technology of the present invention, various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or their equivalents.

[0128] [Structure supported by the above-described embodiment]

[0129] The above-described embodiment supports the following structures.

[0130] (Supplementary Note)

[0131] (Technology 1) A camera unit provided on the top surface of a cold storage, comprising a housing member and an electronic circuit portion housed in the housing member, wherein the electronic circuit portion is surrounded by a flame-retardant material.

[0132] Thus, since the electronic circuit portion is covered with a flame-retardant material, it is assumed that the spread of combustion can be suppressed in the event of a fire in the electronic circuit portion. Thereby, the safety of the camera unit can be improved.

[0133] (Technology 2) The camera unit according to Technology 1, wherein the electronic circuit portion at least includes a first substrate that controls power supply.

[0134] Thus, since the first substrate that is prone to heat generation is covered with a flame-retardant material, it is assumed that the spread of combustion can be suppressed in the event of a fire in the first substrate. Thereby, the safety of the camera unit can be improved.

[0135] (Technology 3) The camera unit according to Technology 2, wherein the electronic circuit portion includes a second substrate that controls the camera and a third substrate that controls various parts different from the first substrate and the second substrate.

[0136] Thus, since the second substrate and the third substrate that are prone to heat generation are covered with a flame-retardant material, it is assumed that the spread of combustion can be suppressed in the event of a fire in at least one of the second substrate and the third substrate. Thereby, the safety of the camera unit can be improved.

[0137] (Technology 4) The camera unit according to Technology 3, wherein the electronic circuit portion further includes the camera.

[0138] Thus, since the camera that is prone to heat generation is covered with a flame-retardant material, it is assumed that the spread of combustion can be suppressed in the event of a fire in at least one part of the camera. Thereby, the safety of the camera unit can be improved.

[0139] (Technology 5) The camera unit according to any one of Technologies 1 to 4 further includes a metal plate that covers the electronic circuit portion when viewed from above. The housing member is formed of a flame-retardant resin, and the electronic circuit portion is surrounded by the housing member and the metal plate.

[0140] Thus, since the electronic circuit portion is covered by a flame-retardant housing member and a non-combustible metal plate, it is possible to suppress the spread of combustion in the event of a fire in the electronic circuit portion. Thereby, the safety of the camera unit can be improved.

[0141] (Technology 6) The camera unit according to any one of Technologies 1 to 5 has a partition portion formed in the housing member that surrounds the area of the housing member where the electronic circuit portion is disposed.

[0142] Thus, since the electronic circuit portion is concentrated in a part inside the housing member, the electronic circuit portion can be covered with a non-combustible or flame-retardant member, and further, the safety of the camera unit can be improved.

[0143] (Technology 7) The camera unit according to Technology 6, wherein the partition portion includes a notch portion through which wiring from the outside of the area passes inside the housing member, and the metal plate is formed such that the gap between the metal plate and the end portion of the partition portion other than the notch portion is equal to or less than a specified interval.

[0144] Thus, even in places where bugs are likely to occur, such as in a kitchen, it is possible to prevent bugs from entering the electronic circuit portion, and the safety of the camera unit can be improved. In addition, the area where the electronic circuit portion is disposed is sealed, so the safety of the camera unit can be improved.

[0145] (Technology 8) The camera unit according to Technology 6 or 7 includes a cover member that covers the surface of the opening of the housing member, and a contact portion that presses the metal plate against the partition portion is formed on the back surface of the cover member.

[0146] Thus, since the area where the electronic circuit portion is disposed is sealed, the safety of the camera unit can be improved.

[0147] Industrial Applicability

[0148] In summary, the photographing device of the present utility model can be used for the purpose of managing the items stored in the refrigerator.

Claims

1. A camera unit, which is arranged on the top surface of a cold storage, wherein the camera unit is characterized in that it comprises: Shell parts; and an electronic circuit portion housed in the case member, The electronic circuit portion is surrounded by a flame retardant material.

2. The camera unit according to claim 1, characterized in that: The electronic circuit unit includes at least a first substrate for controlling a power source.

3. The camera unit according to claim 2, characterized in that: The electronic circuit unit further includes a second substrate for controlling a camera and a third substrate for controlling portions different from the first substrate and the second substrate.

4. The camera unit according to claim 3, characterized in that: The electronic circuit unit further includes the camera.

5. The camera unit according to any one of claims 1 to 4, characterized in that: It also includes a metal plate covering the electronic circuit portion when viewed from above, The shell member is formed of a flame-retardant resin. The electronic circuit portion is surrounded by the case member and the metal plate.

6. The camera unit according to claim 5, characterized in that: The case member includes a partition portion that surrounds a region of the case member where the electronic circuit portion is disposed.

7. The camera unit according to claim 6, characterized in that: The partition portion includes a notch portion inside the case member through which wiring routed from outside the region passes. The metal plate is formed so that a gap between the metal plate and an end portion of a portion of the partition other than the notch portion is equal to or smaller than a predetermined distance.

8. The camera unit according to claim 6, characterized in that: comprising a cover member covering a surface of the opening of the shell member, A contact portion for pressing the metal plate toward the partition portion is formed on the rear surface of the cover member.

Images