Cover for monitoring camera and monitoring camera

Abstract

To secure weather resistance and impact resistance while securing good assemblability, even if a monitoring camera is installed under outdoor environment.SOLUTION: A cover for a monitoring camera includes an aluminum base material, and a coating film formed on the surface of an aluminum base material subjected to chemical film treatment. The coating film includes a primer coating film formed on the chemical conversion treatment film, and a top coating film formed on the primer coating film. The primer coating film contains a polyester-based resin as a main component, and the top coating film contains an acrylic resin as a main component. A film thickness ratio of the primer coating film to the top coating film is 2 to 15, and total film thickness of the film thickness of the primer coating film and the film thickness of the top coating film is 50 to 480 μm.SELECTED DRAWING: Figure 2A

Description

[Technical field]

[0001] The present disclosure relates to a surveillance camera cover and a surveillance camera. [Background technology]

[0002] When a surveillance camera is installed in an outdoor environment, a camera cover is provided to protect it from rainwater, gravel, etc. Patent Document 1 discloses a camera cover that can prevent adhesion of water droplets and dirt and ensure image clarity. This camera cover includes a dome section that covers the entire imaging surface of the camera section, and a camera body that supports and fixes the circular opening of the dome section. The dome section has a hydrophilic coating on its outer surface with a water contact angle of 5 to 30 degrees, which provides a self-cleaning effect and promotes the formation of a film of water droplets that adhere to the surface of the camera cover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5374661 Summary of the Invention [Problem to be solved by the invention]

[0004] In general, it is desirable to make the thickness of the coating on the camera cover thin from the viewpoint of ease of assembly. However, if the coating on the camera cover is thin, the coating is likely to peel off due to corrosion caused by the peeling of the coating, and weather resistance and impact resistance may be reduced.

[0005] The present disclosure has been devised in consideration of the above-mentioned conventional circumstances, and aims to provide a surveillance camera cover and a surveillance camera that can ensure weather resistance and impact resistance while ensuring ease of assembly, even when installed in an outdoor environment. [Means for solving the problem]

[0006] The present disclosure relates to a surveillance camera cover comprising an aluminum base material and a coating film formed on a surface of the aluminum base material that has been subjected to a chemical conversion coating treatment, the coating film comprising an undercoat coating film formed on the chemical conversion treatment coating that has been subjected to the chemical conversion coating treatment, and a topcoat coating film formed on the undercoat coating film, the undercoat coating film containing a polyester-based resin as a main component and the topcoat coating film containing an acrylic resin as a main component, a film thickness ratio of the undercoat coating film to the topcoat coating film being (undercoat coating film thickness / topcoat coating film thickness)=2 to 15, and a total film thickness of the undercoat coating film and the topcoat coating film combined being 50 to 480 μm. Effect of the Invention

[0007] According to the present disclosure, even when installed in an outdoor environment, it is possible to ensure good assembly performance while also ensuring weather resistance and impact resistance. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a surveillance camera according to a first embodiment; [Figure 2A] Cross-sectional view of a portion of the rotating base and camera housing [Figure 2B] Side view of the rotating base and camera housing [Figure 2C] A cross-sectional view of the rotating base and the camera body in FIG. 2B taken along a plane parallel to a plane including the central axis of the rotating base. [Diagram 3] FIG. 2 is a perspective view of the rotating base shown in FIG. 1, excluding the camera housing, viewed from below. [Figure 4] FIG. 4 is an enlarged view of region A of FIG. 3, and is a cross-sectional view taken along line III-III. [Diagram 5] FIG. 2 is a bottom view of the rotating base 19, excluding the camera housing 21, in FIG. [Figure 6] Enlarged view of area B in Figure 5 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, with reference to the drawings as appropriate, an embodiment specifically disclosing a surveillance camera cover and a surveillance camera according to the present disclosure will be described in detail. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters and duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming unnecessarily redundant and to facilitate understanding by those skilled in the art. Note that the attached drawings and the following explanation are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] In the following description of the first embodiment, the up, down, left, right, front and rear directions of the external appearance of the surveillance camera according to the embodiment are assumed to follow the directions shown in FIG.

[0011] 1 is an external front view of a surveillance camera 11 according to the first embodiment. The surveillance camera 11 has a bracket 15 fixed to a support pipe 13 or the like, and a main housing 17 equipped with a camera unit and suspended and supported by the bracket 15. The main housing 17 has a rotating base 19 fixed in a suspended state to the bracket 15, and a camera housing 21 supported in a suspended state so as to be rotatable relative to the rotating base 19. The surveillance camera 11 also has a dome-shaped cover 23 fixed to the camera housing 21. The cover 23 has a central imaging window 25 and left and right projection windows 27 sandwiching the imaging window 25. The imaging window 25 and the projection window 27 are connected by a connector 29.

[0012] The support pipe 13 is fixed to, for example, a ceiling, a wall, a pole, etc. The bracket 15 is formed, for example, in a cone shape. Alternatively, the bracket 15 may be a support metal fitting that has a locking structure on its underside for locking onto the rotating base 19 and is fixed to a pole, a wall, etc. The rotating base 19 supported by the bracket 15 has a cylindrical outer shape that is approximately equal to the diameter of the bottom surface of the cone part of the bracket 15.

[0013] Furthermore, the surveillance camera 11 has a fixing member 38 interposed between the bracket 15 and the rotating base 19 of the main housing 17. The fixing member 38 presses the lower end surface 37 of the bracket 15 and the upper end surface 33 of the rotating base 19 to fix them. The lower end surface 37 and the upper end surface 33 to be pressed may be a part of them (for example, the periphery). A plurality of fixing members 38 may be arranged at equal intervals in the circumferential direction of the bracket 15 and the rotating base 19. Specifically, in the surveillance camera 11, the fixing member 38 is inserted into a recess (not shown) formed between the bracket 15 and the rotating base 19. The recess is provided at 180° intervals along the circumferential direction of the rotating base 19. That is, the recess is provided at two places on the periphery of the rotating base 19. The fixing member 38 inserted into the recess is fastened to the rotating base 19 by a screw member (not shown). As a result, the inner surface of the recess is pressed by the fastened fixing member 38. Two or more fixing members 38 may be disposed along the circumferential direction of rotating base 19. For example, recesses and fixing members 38 may be provided at intervals of 90° along the circumferential direction of rotating base 19.

[0014] In this specification, surveillance camera cover 40 according to embodiment 1 includes bracket 15 and outer circumferential cover 16 that covers the equipment contained inside rotating base 19. In surveillance camera cover 40, at least the portions (outer circumferential surfaces) of bracket 15 and outer circumferential cover 16 that are exposed to the outside are made of an aluminum base material that has been subjected to a chemical conversion coating treatment, and a coating film is formed on the surface of this aluminum base material by painting.

[0015] Surveillance camera cover 40 is provided to protect surveillance camera 11 from rainwater, gravel, etc., particularly when surveillance camera 11 is installed in an outdoor environment. From the viewpoint of ease of assembly of surveillance camera 11, it is desirable that the coating of surveillance camera cover 40, i.e., the paint film, be thin.

[0016] Fig. 2A is a cross-sectional view of a portion of the rotating base 19 and the camera housing 21, and is a view for explaining the circumstances regarding the above-mentioned ease of assembly. Fig. 2B is a side view of the rotating base 19 and the camera housing 21. Fig. 2C is a cross-sectional view taken along line BB in Fig. 2B, in which the rotating base 19 and the camera housing 21 are cross-sectioned along a plane parallel to a plane including the central axis 75 of the rotating base 19. Fig. 2A is an enlarged view (see Fig. 2C) of a portion CC of the cross-sectional view along line BB in Fig. 2B. When the rotating base 19 of the main housing 17 is detached from the bracket 15, a portion of the locking structure that is detachably attached to the bracket 15 and the cable 31 that is drawn out from the bracket 15 to the outside are exposed.

[0017] The rotating base 19 has an outer periphery cover 16 and a bottom wall 16b provided inside the outer periphery cover 16. The outer periphery cover 16 has a side wall 16a exposed to the outside. The side wall 16a is made of the above-mentioned aluminum base material, and the bottom wall 16b may also be made of an aluminum base material.

[0018] The bottom wall 16b forms the bottom wall of the rotating base 19, and also functions as the top plate of the camera housing 21, which is the camera body, and serves to attach the camera housing 21.

[0019] The coating film 42 is formed at least on the outer peripheral surface of the side wall 16a, which is an aluminum base material, but may also be formed on the inner peripheral surface of the side wall 16a to protect against foreign matter entering from the outside. In this embodiment, the coating film 42 is formed on the inner peripheral surface of the side wall 16a from the end on the camera housing 21 side to a position beyond the position P of the bottom wall 16b, that is, beyond the contact surface between the bottom wall 16b and the side wall 16a. In this embodiment, the water stop material 18 provided at the end of the bottom wall 16b is in contact with the coating film applied to the inner peripheral surface of the side wall 16a. Therefore, the coating film and the water stop material 18 prevent water from entering the inside of the outer peripheral cover 16 from between the side wall 16a and the bottom wall 16b. The coating film may also be applied to the bottom wall 16b.

[0020] Therefore, if the thickness of the coating film on the inner peripheral surface of the side wall 16a is too thick, the end of the bottom wall 16b will interfere with the coating film on the inner peripheral surface of the side wall 16a inside the outer peripheral cover 16. This makes it difficult to attach the bottom wall 16b to the outer peripheral cover 16. Therefore, it is desirable to keep the thickness of the coating film below a predetermined value.

[0021] Fig. 3 is a perspective view of the rotating base 19 from below, excluding the camera housing 21 in Fig. 1, and is also a view for explaining the above-mentioned circumstances regarding the ease of assembly. Fig. 4 is an enlarged view of area A in Fig. 3, and a cross-sectional view taken along line III-III, showing a fixing portion 38 for fixing the camera housing 21. The fixing portion 38 is a surface formed by recessing the side wall 16a toward the inner periphery. The camera housing 21 is fixed to the rotating base 19 by inserting and fixing a fixing member 38a into the fixing portion 38.

[0022] From the viewpoint of protection, a coating is also applied to the fixing portion 38, but if the coating is too thick, it becomes difficult to insert the fixing member 38a, and assembly becomes difficult. Therefore, it is desirable to keep the coating thickness below a predetermined value.

[0023] Fig. 5 is a view of the rotating base 19 from below without the camera housing 21 in Fig. 1, and is also a view for explaining the above-mentioned circumstances regarding the ease of assembly. Fig. 6 is an enlarged view of region B in Fig. 5, showing a fixing portion 39 that fixes the bottom wall 16b to the outer peripheral cover 16. The bottom wall 16b is fixed to the outer peripheral cover 16 by inserting a screw (not shown) into the fixing portion 39.

[0024] For protection, a coating is also applied to the fixing portion 39, but if the coating is too thick, it becomes difficult to insert the screws and to assemble the assembly. Therefore, it is desirable to keep the coating thickness below a certain value.

[0025] From the viewpoint of ease of assembly, it is desirable to keep the thickness of the coating film below a certain value, but if the coating film is made thin, it is likely to peel off due to corrosion caused by peeling of the paint, and weather resistance and impact resistance may decrease. Such problems are likely to occur, particularly when the surveillance camera 11 is exposed to severe weather conditions, such as in salt damage areas.

[0026] As a result of extensive research into the above-mentioned problems, the inventors have discovered that by forming the coating film of the surveillance camera cover 40 by combining a polyester resin coating film and an acrylic resin coating film at a predetermined film thickness ratio, it is possible to maintain the weather resistance and impact resistance of the surveillance camera cover 40 while keeping the overall film thickness below a predetermined value, and to enable the cover to withstand climatic conditions that are prone to salt damage, etc.

[0027] The coating film of the surveillance camera cover 40 is formed on the surface of an aluminum base material that constitutes at least the bracket 15 and the outer circumferential cover 16 of the rotating base 19. The surface of the aluminum base material is subjected to a chemical conversion coating treatment, and the coating film is formed on this surface. The chemical conversion coating treatment improves rust resistance.

[0028] The coating film comprises an undercoat coating film formed on the chemical conversion coating film of the aluminum substrate that has been subjected to a chemical conversion coating treatment, and a topcoat coating film formed on the undercoat coating film. The undercoat coating film contains a polyester resin as a main component, and the topcoat coating film contains an acrylic resin as a main component. In other words, as long as the basic properties are not affected, other additional components, additives, etc. may be added or mixed into the undercoat coating film and the topcoat coating film.

[0029] The polyester resin can be produced by reacting a carboxylic acid component with a polyhydric alcohol component by a known method.

[0030] Examples of carboxylic acid components that can be used in the production of polyester resins include polycarboxylic acids such as phthalic acid, isophthalic acid, terephthalic acid, naphthalenedicarboxylic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, 1,9-nonanedicarboxylic acid, 1,10-decanedicarboxylic acid, 1,12-dodecanedicarboxylic acid, 1,2-octadecanedicarboxylic acid, maleic acid, fumaric acid, cyclohexanedicarboxylic acid, hexahydrophthalic acid, tetrahydrophthalic acid, trimellitic acid, and pyromellitic acid; lower alkyl esters of these polycarboxylic acids and their acid anhydrides; and hydroxycarboxylic acids such as malic acid, tartaric acid, 1,2-hydroxystearic acid, and paraoxybenzoic acid.

[0031] Examples of polyhydric alcohol components that can be used in the production of polyester-based resins include ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,9-nonanediol, 1,10-decanediol, neopentyl glycol, spiro glycol, 1,10-decanediol, 1,4-cyclohexanedimethanol, trimethylolethane, trimethylolpropane, glycerin, and pentaerythritol.

[0032] The polyester resin can be produced by using a carboxylic acid component and a polyhydric alcohol component as raw materials, as described above, by a conventional method known for producing polyester resins for coating compositions.

[0033] The acrylic resin is a polymer obtained by polymerizing one or more acrylic monomers selected from the group consisting of acrylic acid, methacrylic acid, and esters thereof. Examples of the acrylic resin include methyl methacrylate, ethyl methacrylate, butyl methacrylate, cyclohexyl methacrylate, ethylhexyl methacrylate, lauryl methacrylate, methyl acrylate, and ethyl acrylate.

[0034] The above-mentioned manufacturing methods, raw materials, etc. of the polyester resin and the acrylic resin are merely examples, and other manufacturing methods, raw materials, etc. may be used.

[0035] In addition, the film thickness ratio of the undercoat coating film to the topcoat coating film is undercoat coating film thickness / topcoat coating film thickness=2 to 15, and the total film thickness including the undercoat coating film and the topcoat coating film is set to 50 to 480 μm.

[0036] The desired weather resistance cannot be obtained if the undercoat film thickness / topcoat film thickness ratio is less than 2. Increasing the undercoat film thickness / topcoat film thickness ratio to more than 15 is not preferred because it does not significantly improve weather resistance or impact resistance and only increases costs.

[0037] If the total thickness is less than 50 μm, the coating will not perform as expected and sufficient weather resistance and impact resistance will not be obtained.If the total thickness is more than 480 μm, the coating will interfere with the components of the security camera during assembly, making assembly difficult.

[0038] This allows the total thickness of the coating to be kept within a specified range, ensuring good assembly properties, while the combination of a polyester resin undercoat coating and an acrylic resin topcoat coating ensures weather resistance and impact resistance.

[0039] The thickness of the undercoat film of polyester resin is set in the range of, for example, 40 to 450 μm. This ensures good assembly properties while ensuring weather resistance and impact resistance. If the thickness of the undercoat film is thinner than 40 μm, sufficient weather resistance and impact resistance cannot be obtained. If the thickness of the undercoat film is thicker than 450 μm, the coating film becomes uneven, resulting in poor assembly properties.

[0040] The thickness of the acrylic resin topcoat is set, for example, in the range of 10 to 30 μm. This ensures weather resistance. If the topcoat is thinner than 10 μm, weather resistance cannot be obtained. If the topcoat is thicker than 30 μm, the desired thickness cannot be ensured with one coat, resulting in poor adhesion of the coating to the substrate. As a result, the coating is more likely to peel off.

[0041] The film thickness ratio of the undercoat coating film to the topcoat coating film is set, for example, in the range of undercoat coating film thickness / topcoat coating film thickness=5 to 10. This can further improve weather resistance.

[0042] The undercoat coating may be, for example, a coating formed from a powder paint, and the topcoat coating may be, for example, a coating formed from a solvent-based paint.

[0043] By forming the undercoat with powder paint, it is possible to prevent pinholes from occurring and to inhibit corrosion of the aluminum substrate. By forming the topcoat with solvent-based paint, it is possible to easily adjust the total thickness of the coating. In addition, powder paint and solvent-based paint can ensure a sufficient coating thickness with only one coat each, and there is no need to apply multiple coats, which increases the adhesion of the coating to the aluminum substrate.

[0044] 2, in the case where the aluminum base material of the surveillance camera cover 40 includes a side wall 16a exposed to the outside, the surveillance camera cover 40 may further include a bottom wall 16b for mounting the camera housing 21 inside the side wall 16a. The side wall 16a and the bottom wall 16b are assembled together, and the coating film 42 is formed, for example, on at least the inner circumferential surface of the side wall 16a from the end on the camera housing 21 side beyond the contact surface between the bottom wall and the side wall 16a. This ensures weather resistance and impact resistance even against foreign objects that may enter the interior of the surveillance camera cover 40.

[0045] The surveillance camera 11 according to the embodiment includes the above-mentioned surveillance camera cover 40, and can ensure good assembly properties while also ensuring weather resistance and impact resistance.

[0046] Next, the coating film forming process will be described. First, a chemical conversion coating is applied to the aluminum substrate. The chemical conversion coating is formed, for example, by chromium oxide treatment, and is carried out using, for example, Palcoat (trivalent chromium-based, etc.). Then, a polyester resin undercoat coating process is carried out on the chemical conversion coating of the aluminum substrate to form an undercoat coating. After a drying process for drying the undercoat coating, an acrylic resin topcoat coating process is carried out to complete the coating film.

[0047] The undercoat coating film is fixed to the aluminum substrate by drying. After the undercoat coating film is fixed, the topcoat coating process is carried out, so the adhesion of the undercoat coating film to the aluminum substrate is increased. The adhesion of the topcoat coating film to the undercoat coating film is also increased.

[0048] It is preferable that the undercoat coating film is formed from a powder paint, and the topcoat coating film is formed from a solvent-based paint. By forming the undercoat coating film from a powder paint, it is possible to suppress the occurrence of pinholes and to inhibit corrosion of the aluminum substrate. In addition, by forming the topcoat coating film from a solvent-based paint, it is possible to easily adjust the total thickness of the coating film. In addition, the powder paint and the solvent-based paint can ensure a necessary and sufficient film thickness with only one application, and there is no need to apply multiple coats, which increases the adhesion of the coating film to the aluminum substrate.

[0049] The aluminum base material may be, for example, AlSi10Mg, but the type is not particularly limited.

[0050] (Example) First, the inventors prepared samples 1 to 10 using various raw materials for the aluminum substrate, chemical conversion coating, undercoat coating, and undercoat coating, as shown in Tables 1 and 2, and verified the weather resistance of each sample. The weather resistance test was conducted in accordance with the salt spray test method (so-called CASS test) specified in JIS Z 2371:2015. After the test, samples that did not have blisters due to rust under the coating (in other words, an increase in volume due to rust compared to before the test; the same applies below) were rated as ◯, and samples that had blisters due to rust under the coating were rated as ×. The thickness of the undercoat coating for each sample was 75 μm, the thickness of the topcoat coating was 15 μm, and the total thickness was 90 μm.

[0051] [Table 1]

[0052] [Table 2]

[0053] As a result of the experiment, Sample 4, which used a polyester resin undercoat and an acrylic resin topcoat as in the embodiment, exhibited superior weather resistance compared to the other samples. This is believed to be due to the good adhesion between the polyester resin and the acrylic resin.

[0054] Next, the inventors prepared samples 11 to 29 having different values ​​for the thickness of the polyester resin undercoat coating film and the acrylic resin topcoat coating film as shown in Tables 3 to 6, and verified the weather resistance, applicability, and assembly of each sample. The weather resistance test was performed in accordance with the salt spray test method (so-called CASS test) specified in JIS Z 2371:2015. The applicability is an evaluation of whether or not the undercoat coating film and the topcoat coating film could be formed by one application. When the applicability is ◯, the topcoat coating film and the undercoat coating film could be formed by one application, and when the applicability is ×, at least one of the topcoat coating film and the undercoat coating film could not be formed by one application. The assemblyability is an evaluation of whether or not the side wall 16a and the bottom wall 16b in FIG. 2 were easily assembled. The aluminum substrate, chemical conversion coating film, undercoat coating film, and undercoat coating film of each sample are as follows.

[0055] Aluminum substrate: AlSi10Mg Chemical conversion coating: Palcoat Undercoat: V-PET#6000SW, a polyester resin (manufactured by Dai Nippon Paint Co., Ltd.) Topcoat: Acrylic resin Acrybake (manufactured by Dinet Paint (Shanghai) Co., Ltd.)

[0056] [Table 3]

[0057] [Table 4]

[0058] [Table 5]

[0059] [Table 6]

[0060] As a result of the experiment, samples with a primer / topcoat thickness of 2-15 and a total thickness of 50-480μm were found to have better weather resistance, applicability, and assembly properties than other samples. In particular, samples 14, 15, 17, 20, 22, and 23 with a primer / topcoat thickness of 40-450μm, a topcoat thickness of 10-30μm, and a primer / topcoat thickness ratio of 5-10 were found to have good properties.

[0061] This is believed to be because when the thickness ratio of the polyester resin to the acrylic resin is within a certain range, the adhesion between the topcoat film and the undercoat film is improved. The improved adhesion between the coating films is believed to make the topcoat film less susceptible to corrosion by salt water.

[0062] As a result, the present disclosure includes at least the following items. Note that, in parentheses, the components corresponding to those in the above-described embodiment are shown, but the present disclosure is not limited to these.

[0063] (1) An aluminum substrate and a coating film (coating film 42) formed on a surface of the aluminum substrate that has been subjected to a chemical conversion coating treatment; The coating film is an undercoat coating film formed on the chemical conversion coating film that has been subjected to the chemical conversion coating treatment; A topcoat coating film formed on the undercoat coating film, The undercoat coating film contains a polyester resin as a main component, The topcoat coating film contains an acrylic resin as a main component, The film thickness ratio of the undercoat coating film to the topcoat coating film is undercoat coating film thickness / topcoat coating film thickness=2 to 15, and the total film thickness of the undercoat coating film and the topcoat coating film is 50 to 480 μm. A cover for a surveillance camera (surveillance camera cover 40).

[0064] As a result, in the surveillance camera cover, good assembly performance can be ensured by keeping the total thickness of the coating film within a specified range, while the combination of a polyester-based resin undercoat coating film and an acrylic resin topcoat coating film ensures weather resistance and impact resistance.

[0065] (2) The thickness of the undercoat coating is 40 to 450 μm. A cover for a surveillance camera as described in (1).

[0066] This makes it possible to ensure good assembly ease for the surveillance camera cover while also ensuring weather resistance and impact resistance.

[0067] (3) The thickness of the topcoat coating film is 10 to 30 μm. A cover for a surveillance camera as described in (2).

[0068] This ensures weather resistance for the surveillance camera cover.

[0069] (4) The thickness ratio of the undercoat coating film to the topcoat coating film is undercoat coating film thickness / topcoat coating film thickness=5 to 10; A cover for a surveillance camera as described in (1).

[0070] This makes it possible to further improve the weather resistance of the surveillance camera cover.

[0071] (5) The undercoat coating is a coating formed from a powder paint, The topcoat coating film is a coating film formed from a solvent-based paint. A cover for a surveillance camera as described in (1).

[0072] As a result, in the case of a surveillance camera cover, by forming the undercoat coating film using powder paint, the occurrence of pinholes is suppressed and corrosion of the aluminum base material is inhibited, and by forming the topcoat coating film using solvent-based paint, the total thickness of the coating film can be easily adjusted.

[0073] (6) The aluminum base includes a first cover member (side wall 16a) exposed to the outside, The surveillance camera cover further includes a second cover member (bottom wall 16b) for attaching a camera body (camera housing 21) of a surveillance camera (surveillance camera 11) inside the first cover member, the first cover member and the second cover member are assembled; The coating film is formed on at least the inner circumferential surface of the first cover member from the end on the camera body side to beyond the contact surface between the second cover member and the first cover member. A cover for a surveillance camera as described in (1).

[0074] This ensures that the surveillance camera cover is weather-resistant and impact-resistant even against foreign objects that may get inside.

[0075] (7) A surveillance camera equipped with a surveillance camera cover described in any one of (1) to (6).

[0076] As a result, in the surveillance camera, good assembly performance can be ensured by keeping the total thickness of the coating within a prescribed range, while the combination of an undercoat coating made of a polyester resin and a topcoat coating made of an acrylic resin ensures weather resistance and impact resistance.

[0077] Although various embodiments have been described above with reference to the accompanying drawings, the present disclosure is not limited to such examples. It is clear that a person skilled in the art can conceive of various modifications, corrections, substitutions, additions, deletions, and equivalents within the scope of the claims, and it is understood that these also belong to the technical scope of the present disclosure. In addition, the components in the various embodiments described above may be arbitrarily combined within the scope of the invention. [Industrial Applicability]

[0078] INDUSTRIAL APPLICABILITY The present disclosure is useful as a surveillance camera cover and a surveillance camera that can ensure ease of assembly while also ensuring weather resistance and impact resistance, even when installed in an outdoor environment. [Explanation of symbols]

[0079] 11. Surveillance Cameras 15 Bracket 16 Outer cover 16a side wall 16b Bottom wall 17 Main unit 19 Rotating base 21 Camera housing (camera body) 23 Cover 25 Imaging window 27 Light projection window 29 Connector 33 Upper end surface 35 Fixing material 37 Lower end surface 40 Surveillance camera cover 42 Paint film

Claims

1. The present invention comprises an aluminum base material and a coating film formed on a surface of the aluminum base material that has been subjected to a chemical conversion coating treatment, The coating film is an undercoat coating film formed on the chemical conversion coating film that has been subjected to the chemical conversion coating treatment; A topcoat coating film formed on the undercoat coating film, The undercoat coating film contains a polyester resin as a main component, The topcoat coating film contains an acrylic resin as a main component, The film thickness ratio of the undercoat coating film to the topcoat coating film is undercoat coating film thickness / topcoat coating film thickness=2 to 15, and the total film thickness of the undercoat coating film and the topcoat coating film is 50 to 480 μm. Cover for surveillance cameras.

2. The thickness of the undercoat coating is 40 to 450 μm. The surveillance camera cover according to claim 1.

3. The thickness of the topcoat coating is 10 to 30 μm. The surveillance camera cover according to claim 2.

4. The thickness ratio of the undercoat coating film to the topcoat coating film is undercoat coating film thickness / topcoat coating film thickness=5 to 10. The surveillance camera cover according to claim 1.

5. The undercoat coating film is a coating film formed from a powder paint, The topcoat coating film is a coating film formed from a solvent-based paint. The surveillance camera cover according to claim 1.

6. The aluminum base includes a first cover member exposed to an outside, The surveillance camera cover further includes a second cover member for attaching a camera body of the surveillance camera inside the first cover member, the first cover member and the second cover member are assembled; the coating film is formed on at least an inner circumferential surface of the first cover member from an end portion on the camera body side to a contact surface between the second cover member and the first cover member; The surveillance camera cover according to claim 1.

7. A surveillance camera cover according to any one of claims 1 to 6, Surveillance camera.

Images