Camera cover and camera
View Patent ↗A camera cover and camera capable of mitigating water drop and dirt adhesion and of ensuring image clarity are provided. A dome section ( 130 ) of the camera cover includes, on its outer surface ( 130 a ), a hydrophilic coating ( 131 ) made of an inorganic material whose main component is a silicon compound. The thickness of the hydrophilic coating ( 131 ) is 0.01 to 1 μm. Surface roughness Ra of the hydrophilic coating ( 131 ) is 0.06 μm or less.
1. A surveillance camera comprising:
a housing;
a cover, having a dome shape or a flat shape, having a light transmissive area including an inner surface and an outer surface, the inner surface and the outer surface each comprising a coating that imparts a water contact angle on the inner surface and the outer surface; the water contact angle of the outer surface is greater than the water contact angle of the inner surface; and the water contact angle of the outer surface is 5 to 30 degrees and the water contact angle of the inner surface is less than 10 degrees;
a camera enclosed in at least one of the cover or the housing and configured to take an image through the light transmissive area; and
a base member configured to secure the housing to an installation surface;
wherein the light transmissive area includes an inner surface facing the camera and an outer surface opposite the inner surface; and
the cover and the housing are secured together in a water-tight manner.
2. The surveillance camera according to claim 1 , wherein the housing having a generally cylindrical portion extending from the base member and a transition portion extending from an end of the housing opposite the base member, the transition portion being secured to the cover.
3. The surveillance camera according to claim 2 , wherein the transition portion has a tapered configuration.
4. The surveillance camera according to claim 2 , wherein a plurality of depressions provided in the transition portion, each of the plurality of depressions being configured to receive a fastening member therein.
5. The surveillance camera according to claim 4 , wherein each of the plurality of depressions being defined by a surface sloping inwardly from an outer surface of the transition portion.
6. The surveillance camera according to claim 5 , wherein the transition portion having a tapered configuration, a taper of the transition portion being less than the inwardly slope of each of the plurality of depression.
7. The surveillance camera according to claim 5 , wherein each of the plurality of depressions being positioned adjacent a boundary between the transition portion and the cylindrical portion.
8. The surveillance camera according to claim 1 , wherein the coating of the outer surface comprises a self-cleaning functionality.
9. The surveillance camera according to claim 1 , wherein the camera comprises a CCD.
10. The surveillance camera according to claim 1 , wherein the camera has a cylindrical shape.
11. The surveillance camera according to claim 1 , wherein the base member comprises a metal.
12. The surveillance camera according to claim 1 , wherein the cover and the housing comprise a resin material.
13. The surveillance camera according to claim 1 , wherein the coatings have a substantially even thickness.
14. The surveillance camera according to claim 1 , wherein the outer surface is coated with the coating by spraying or dipping.
15. A cover for a camera, the cover, having a dome shape or a flat shape, having a light transmissive area including an inner surface and an outer surface, the inner surface and the outer surface each comprising a coating that imparts a water contact angle on the inner surface and the outer surface; the water contact angle of the outer surface is greater than the water contact angle of the inner surface; and the water contact angle of the outer surface is 5 to 30 degrees and the water contact angle of the inner surface is less than 10 degrees.
16. The cover according to claim 15 , wherein the cover comprises a resin material.
17. The cover according to claim 16 , wherein the coating of the outer surface comprises a self-cleaning functionality.
18. The cover according to claim 16 , wherein the thickness of the coating of the outer surface is 0.01 to 1 μm; and maximum height Ry and ten-point average roughness Rz of the surface of the coating of the outer surface are 0.10 μm or less.