Rain lens cover

Abstract

To provide a rain lens cover attachable to the lens (2) of an existing television camera (1), the cover (3) having a cylindrical front end (3a) formed at an angle between 45° and 80°, to address the issue that, although existing television cameras are covered with a thin nylon cover over the entire camera, rainwater still splashes onto the lens during golf broadcasting in rainy weather, causing water droplets to appear on the broadcast image.SOLUTION: The rain lens cover of the present invention that allows a cover (3) to be attachable to a lens (2) of an existing television camera (1), and the cover (3) has a cylindrical front end (3a) formed as an eave part (3a).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rain lens cover that prevents rainwater from splashing on the lens when taking pictures from behind a canopy. [Background technology]

[0002] In conventional cameras, shoulder-mounted television cameras that are carried by cameramen on their shoulders require a vinyl cover to be placed over the entire television camera, including the taking lens, depending on the usage environment, when shooting on rainy days.

[0003] Furthermore, when fixed television cameras reporting on typhoons and other storms get hit by rainwater, they use the windshield wipers found on cars. When the wipers are activated, rainwater adheres to the filming lens, and viewers individually judge the intensity of the rain based on the amount of water that adheres. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent application 2021-189300 [Patent Document 2] Patent application 2017-97133 [Patent Document 3] Patent application 2006-165761 [Patent Document 4] Patent application No. 8-79583 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] In conventional shoulder-mounted television cameras, which are carried by cameramen on their shoulders, the entire television camera, including the lens, is covered depending on the environment in which it is used.However, during golf coverage in the rain, rainwater would get on the lens and raindrops would appear on the screen, making the people being filmed blurry.

[0006] Also, surveillance cameras for typhoons and other storms use windshield wipers to wipe away rainwater, but television viewers judge the intensity of the rain by the amount of raindrops on the lens (2) and the number of times the wipers are turned on. However, while the surroundings could be seen only when the wipers were turned on, the rain soon obscured the surrounding scenery, making for an unsightly sight. Also, to get a clear view of the port without windshield wipers, it is best to place the camera inside a building in a place where the rain does not fall and shoot from there.

[0007] Therefore, the rain lens cover of the present invention is similar to that of a small building, and is provided by attaching a cover (3) to the lens (2) of an existing television camera (1), and the cover (3) has a canopy part (3a) at the tip of the cylinder, and the cover (3) keeps out rainwater. [Means for solving the problem]

[0008] To achieve the above object, the rain lens cover of the present invention comprises a cylindrical cover (3) removably attached to the lens (2) of an existing television camera (1) by a pipe 20 cm or longer.

[0009] The cover (3) has a cylindrical tip with an angle of 80 degrees to 45 degrees forming a canopy (3a), and a slit (3b) at the bottom, allowing the lens (2) to be inserted even if it is large, thereby achieving the purpose. [Effects of the Invention]

[0010] The rain lens cover of the present invention has the following effects. (i) Since it is an afterthought, it can only be used when it rains. (See paragraph 0012 for details) (b) The slit at the bottom makes it easy to install. (See paragraph 0012 for details) (c) There is a heating device in front of the lens to prevent the lens from fogging up. (See Figure 3 and paragraph 0016 for details) (d) The tip of the rain lens cover is shaped like a canopy, so rain does not get on it. (See paragraph 0012 for details) (e) The rain lens cover is equipped with a device that blows air. (See Figure 5 and paragraph 0027 for details) [Brief explanation of the drawings]

[0011] [Figure 1] The figure is a side view with the rain lens cover attached. [Figure 2] The figure is a perspective view of the present invention. [Figure 3] The figure is a cross-sectional side view of the heat generating device mounted inside the rain lens cover. [Figure 4] The figure is a side view of the cover with the hose band attached. [Figure 5] The figure is a schematic diagram of wind being blown onto a fixed rain lens cover. BEST MODE FOR CARRYING OUT THE INVENTION

[0012] The rain lens cover of this invention is not used on sunny days, but only in rainy weather. The rain lens cover is made by cutting a pipe slightly smaller than the lens (2) to a length of 20 cm, and then cutting one end of the pipe diagonally to create a canopy (3a). The canopy (3a) is similar to the canopy of a building, with the top acting as an umbrella to prevent rain from reaching the lower part. The shortest part of the central pipe, cut diagonally, is then cut cylindrically to create a slit (3b), and the cover (3) is then expanded and inserted so that it fits over the lens (2).

[0013] Also, when the cover (3) is larger than the lens (2), it is fixed using a hose band (3d). This is because if the cover (3) is larger than the lens (2), it cannot be fixed, so when the hose band (3d) is closed, the cover (3) closes to the thickness of the lens (2), and by closing it firmly, the cover (3) is fixed to the lens (2).

[0014] Therefore, the cover (3), which is originally a slightly small pipe, is expanded by the slit (3b) and placed over the lens (2), which secures it in place. Therefore, it is not in use and can be removed on sunny days, so it does not get in the way and is easy to attach and remove. The eaves (3a) at the tip of the cover (3) resembles the eaves of a house, hence the name eaves (3a). The angle of the eaves (3a) is 80 to 45 degrees, assuming that a right-angle cut is 90 degrees. The inside of the eaves (3a) is designed to keep out rain.

[0015] If rainwater appears to be adhering to the lens (2) when looking up to follow the ball during a golf broadcast, the cover (3) can be replaced with a longer one. However, outdoor sports such as golf broadcasts are generally filmed with a telephoto lens, and even if the cover (3) is made about 50 cm long, it will not appear on the edge of the TV screen.

[0016] However, when the raindrops are small and light, such as light rain or mist, if you warm the glass at the tip of the lens (2) with the heating device (3c), the glass part of the lens (2) will not fog up and the image will not be affected. Also, if you suddenly enter a warm room, the lens (2) will collect moisture around it because the temperature is low, causing the glass of the lens (2) to fog up, but if you warm the lens (2) with the heating device (3c), it will not fog up. Example 1

[0017] The rain lens cover of the present invention will be described with reference to the drawings. Figure 1 is a side view of the camera with the rain lens cover attached. The existing television camera (1) and lens (2) are drawn with thick dotted lines because they are different from those of the present invention, and the thin dotted lines drawn on the cover (3) indicate areas that cannot be seen.

[0018] The existing television camera (1) weighs about 10 kg and is designed to be worn over the shoulder. It has a lens (2) on the front, which is covered with a cover (3) to protect it from rain. The cover (3) is made by cutting a 70 mm diameter pipe to a length of more than 20 cm, with the visor (3a) at the end cut at a 60-degree angle. While the top is 20 cm long, the bottom is about 4 cm shorter, at 16 cm. A slit (3b) is made in the bottom, allowing the cover (3) to be attached, like a one-size-fits-all ring, even if the lens (2) is slightly larger.

[0019] Figure 2 is a perspective view of the present invention, showing a slit (3b) on the underside of the cover (3), which extends to the edge of the cover (3). In other words, the cover (3) is made by cutting a pipe slightly smaller than the lens (2) to a length of 20 cm, then cutting the canopy (3a) at a 60-degree angle, and making a slit (3b) in the bottom. The inside of the cover (3) is preferably black to reduce light reflection. The pipe can also be thin, like a rainwater drainage pipe. However, the cover (3) can also be made from a rolled board, with the ends shorter at the bottom and longer at the top in the middle.

[0020] Figure 3 is a side cross-sectional view of a rain lens cover with a heating device installed, cut vertically from Figure 2. The top of the cover (3) is a cross-section, and the bottom is a slit (3b), with the cut cross-section indicated by a solid line. The heating device (3c) is installed where the lens (2) is inserted on the right side. Electricity is transmitted to the heating device (3c) via a cord (3f), generating heat and heating the glass of the lens (2) to approximately 60 degrees. Because this temperature is not found in the air, the glass of the lens (2) does not fog up. Furthermore, the heating device (3c) acts as a stopper for the lens (2), allowing you to push the lens (2) into place up to the heating device (3c), providing a visual aid.

[0021] Figure 4 is a side view of the cover (3) with the hose band (3d) attached. The cover (3) has a slit (3b) at the bottom, and because of this slit (3b), slight differences in diameter between the lens (2) and the cover (3) can be accommodated, but if the cover (3) is larger than the lens (2), the hose band (3d) is attached and the cover (3) is tightened.

[0022] If the installation is incomplete, tighten the hose band (3d). The hose band (3d) is used to tighten diameters between Φ60 and Φ80. The hose band (3d) has 14 diagonal grooves and a bolt in the center that threads the grooves. The hose band (3d) closes by turning the bolt.

[0023] When the hose band (3d) is closed, the cover (3) on the inside also closes, fixing the lens (2). Therefore, the position where the hose band (3d) is fixed is just inside, and since the size of the lens (2) is fixed, when closed, it stops at the size of the lens (2) plus the thickness of the cover (3). Example 2

[0024] Figure 5 is a schematic diagram showing how a rain lens cover nozzle is attached to a fixed surveillance camera to blow air and keep rainwater away. On rainy days, the eaves (3a) of the cover (3) blows air (4), keeping out the outside air mixed with light rain.

[0025] To observe the state of the port in the rain or people walking around town, a cover (3) is needed to protect the lens (2) from rain. In light rain or fog, the surveillance camera is attached with a nozzle (3e) near the lens (2) of the cover (3), and the nozzle (3e) is attached to a pole (4a) via a hose (4c).

[0026] The pillar (4a) has a fan (4b) attached to its bottom, and when the fan (4b) is operated, the air is transmitted to the pillar (4a) (28e), flows near the lens (2), and comes out from the eaves part (3a) at the tip.

[0027] At this time, wind (4) flows near the lens (2), drying it with the flowing wind (4). The wind (4) flows upward from the bottom of the pillar (4a), but because the diameter of the pillar (4a) is large at Φ200, it flows slowly, so even light rain mixed in falls downward. In other words, even in light rain, water is about 2,000 times heavier than air, and when the air flows slowly, the air and water separate, and only the air rises. And because the diameter of the hose (4c) is small at Φ40, it flows quickly, so the glass of the lens (2) does not fog up. And because the wind (4) exits from the eaves (3a), it acts as a barrier, keeping light rain and mist away, so moisture in the air does not adhere to the lens (2). Example 3

[0028] An example of use will be explained below. Golf coverage may be canceled due to rain, or it may start raining midway through. In such cases, while it has been common practice to cover the existing television camera (1), a cover (3) is now attached to the lens (2) to prevent rainwater from getting on the glass of the lens (2).

[0029] Since golf broadcasts are often shot with a telephoto lens (2), the edge of the cover (3) does not appear on the TV screen, and when shooting a close-up of a ball 100 meters away, even if the cover (3) is 1 meter long, it will not appear on the TV screen. In other words, when shooting with a telephoto lens, the cover (3) can be long, but when shooting from a distance, the edge of the cover (3) will appear on the TV screen, so care must be taken. Example 4

[0030] A detailed explanation of symbols and terms is provided. Existing television cameras (1) are generally shoulder-mounted cameras, but there are also surveillance cameras. The lens (2) is a part attached to the tip of the existing television camera (1), and in this case refers to the entire cylindrical part. Therefore, when the lens (2) becomes cloudy, it means that the glass or convex lens attached to the end of the cylinder has become cloudy, so the glass or convex lens must always be kept warm or allowed to dry in the air. The cover (3) is made of pipe, but it can also be made from rolled board. The cover (3) is attached to protect the lens (2) from rain when it rains, and it needs to be at least 20 cm long to prevent the rain from hitting the lens (2). Sports broadcasts usually use telephoto lenses to film the game, so even if the cover (3) is 50 cm long, the edge of the cover (3) will not be reflected on the TV screen.

[0031] The canopy (3a) is the tip of the cover (3) cut at an angle of 80 to 45 degrees. The reason why the canopy (3a) is necessary is that when the existing television camera (1) is pointed upward to take a picture, rain falls on the underside of the cover (3) and the rain splashes onto the screen, so the canopy (3a) is cut at an angle of 80 to 45 degrees, which is the angle at which the existing television camera (1) is pointed upward and the angle at which the rain comes in on the wind. The slit (3b) is made at the bottom of the cover (3) when the cover (3) is made of pipe, so that the lens (2) can be inserted even if it is slightly larger. The best situation is when the lens (2) is 2 mm larger than the cover (3). Also, when making the cover (3) by rolling a board, the slit (3b) is made naturally, so the slit (3b) refers to the cut. The heating device (3c) is installed inside the cover (3) in contact with the lens (2), and the heating device (3c) heats the lens (2) electrically, preventing the heated lens (2) from fogging up. When the lens (2) comes into contact with the outside air, fogging occurs if the temperature of the lens (2) is low, so on rainy days or when shooting in warmer places, the heating device (3c) is turned on to warm up the lens.

[0032] When the lens (2) is smaller than the cover (3), the hose band (3d) is used to fasten the cover (3) to the lens (2). Also, when the lens (2) and the cover (3) have the same external dimensions and the cover (3) cannot be securely fastened, the hose band (3d) is used to fasten the cover (3). However, a rubber band can also be used to hold the cover in place. The nozzle (3e) connects the hose (4c) and the cover (3), and if there is a slit (3b), it can be installed sideways. The cord (3f) is the cord (3f) of the heating device (3c), and is divided into an electric wire that operates the heating device (3c) and a ground, which is not shown in the diagram. The wind (4) represents the flow of air. The air taken in by the fan (4b) becomes wind (4) and rises up the pillar (4a) and goes through the hose (4c) to the nozzle (3e). The nozzle (3e) is located close to the lens (2), dries the lens (2), and then goes out of the cover (3) to keep out the rain-mixed air that tries to get in.

[0033] The pillar (4a) is a pillar (4a) for supporting the existing television camera (1), and inside the pillar (4a) there is a fan (4b) that blows air (4) to dry the area in rainy weather. The fan (4b) is the one shown in Figure 5, and a fan or ventilation fan of about 20W will suffice. The hose (4c) is about Φ30 to Φ50, and since the existing TV camera (1) moves left and right, it is better for the hose (4c) to be soft. The glass is attached to the tip of the lens (2), and although some have a convex lens attached to the tip, usually a flat glass is attached to protect the convex lens. [Explanation of symbols]

[0034] 1 Existing TV camera 2 Lens 3 Cover 3a Eaves 3b Slit 3c Heating device 3d hose band 3e nozzle 3f cord 4 Wind 4a Pillar 4b Fan 4c Hose

Claims

[Claim 1] A cover (3) of 20 cm or more in length can be attached to the lens (2) of an existing television camera (1), The cover (3) is characterized in that the angle of the cylindrical tip of the cover (3a) is 80 to 45 degrees.

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