Rain lens cover

Abstract

Conventional cameras have a thin nylon cover that covers the entire TV camera, but even so, when a golf game is broadcast in the rain, rainwater gets on the lens and is reflected on the screen. Therefore, the rain lens cover of the present invention is a cover (3) that can be attached to the lens (2) of an existing TV camera (1), and the cylindrical tip (3a) is angled from 80 degrees to 45 degrees. [Solution] The rain lens cover of the present invention is capable of attaching a cover (3) to the lens (2) of an existing television camera (1), and the cover (3) has a cylindrical tip (3a) that forms a canopy portion (3a).

Description

[Technical field]

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

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

[0003] In addition, when rainwater falls on fixed television cameras showing the state of typhoons, etc., the windshield wipers used to be used by cars, etc. When the wipers were activated, rainwater would then adhere to the filming lens, and viewers would judge the strength of the rain individually based on the amount of water that adhered to the lens. [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 THEINVENTION [Problem to be solved by the invention]

[0005] Conventional cameras are shoulder-mounted television cameras that are carried by cameramen on their shoulders, and the entire television camera, including the lens, is covered depending on the environment in which it is used. Even so, during a golf broadcast in the rain, rainwater gets on the lens, and the raindrops are reflected on the screen, making the people being filmed blurry.

[0006] In addition, surveillance cameras for typhoons and other storms use windshield wipers to wipe away rainwater, but TV viewers judge the strength of the rain by the amount of rain on the lens (2) and the number of times the wiper is turned on. However, while the surroundings could only be seen when the wiper was on, the rain soon obscured the surrounding scenery, making for an unsightly sight. In addition, to see the state of the port clearly 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), the cover (3) having a visor portion (3a) at the tip of the cylinder, and the cover (3) keeps out rainwater. [Means for solving the problem]

[0008] In order to achieve the above object, the rain lens cover of the present invention comprises a tubular cover (3) removably attached to the lens (2) of an existing television camera (1) by a pipe having a length of 20 cm or more.

[0009] The cover (3) has a visor part (3a) with an angle of 45 degrees instead of 80 degrees at the tip, and a slit (3b) is made in the bottom, so that the lens (2) can be inserted even if it is large, thereby achieving the purpose. Effect of the Invention

[0010] The rain lens cover of the present invention has the following effects. (i) Since it is a retrofit, 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) (ii) The tip of the rain lens cover is shaped like a canopy so that 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 description of the drawings]

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

[0012] The rain lens cover of the present invention is not used when it is sunny, but only when it is raining. The rain lens cover is made by cutting a pipe slightly smaller than the lens (2) to 20 cm, and cutting one of the pipes diagonally to create the eaves (3a). The eaves (3a) are the same as the eaves of a building, with the upper part acting as an umbrella to prevent rain from getting in, so that the lower part does not get wet. Then, the shortest part of the central pipe cut diagonally is cut in a cylindrical direction to create a slit (3b), and the cover (3) is 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 by closing the hose band (3d), 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 was originally a slightly small pipe, is expanded by the slit (3b) and placed over the lens (2), which fixes it in place. Therefore, it is not used when it is sunny and can be removed, so it does not get in the way and is easy to attach and remove. The eaves (3a) at the end of the cover (3) is named eaves (3a) because it resembles the eaves of a house. The angle of the eaves (3a) is 80 degrees to 45 degrees, assuming that when cut at a right angle it is 90 degrees. The inside of the eaves (3a) is designed to keep out rain.

[0015] If rainwater appears to be on 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, so even if the cover (3) is made 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, the glass at the tip of the lens (2) is heated by the heating device (3c) that warms the lens (2), the glass part of the lens (2) becomes cloudy and the image is not affected. Also, if you suddenly enter a warm room, the lens (2) will collect moisture around it and the glass of the lens (2) will become cloudy because the temperature of the lens (2) is low, but if you warm the lens (2) with the heating device (3c), it will not become cloudy. Example 1

[0017] The rain lens cover of the present invention will be described with reference to the drawings. FIG. 1 is a side view with a 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 parts that cannot be seen.

[0018] The existing television camera (1) weighs about 10 kilograms and is shoulder strapped, with a lens (2) at the front, which has a cover (3) to protect the lens (2) from rain. The cover (3) is made by cutting a Φ70 pipe to a length of more than 20 centimeters, and the visor part (3a) at the end is cut at an angle of 60 degrees, so that if the top is 20 centimeters long, the bottom is 16 centimeters long, about 4 centimeters shorter. A slit (3b) is made at the bottom, so that the cover (3) can be attached like a one-size-fits-all ring, even if the lens (2) is a little large.

[0019] FIG. 2 is a perspective view of the present invention, and there is a slit (3b) on the underside of the cover (3), which reaches the end of the cover (3). In other words, the cover (3) is made by cutting a pipe slightly smaller than the lens (2) to 20 cm, cutting the angle of the visor part (3a) at 60 degrees, and making a slit (3b) in the lower part. The inner surface of the cover (3) is preferably black to reduce light reflection. Also, the pipe can be thin, like a pipe for draining rainwater. However, the cover (3) can also be made by rolling a board, with the ends shorter at the bottom and the center longer than the top.

[0020] Figure 3 is a side cross-sectional view of the rain lens cover with the heating device attached, cut vertically from Figure 2. The top of the cover (3) is a cross-sectional view, the bottom is cut by a slit (3b), and the cut cross-section is shown by a solid line. The heating device (3c) is installed where the lens (2) is inserted on the right side, and electricity is transmitted to the heating device (3c) via a cord (3f), which generates heat and heats the glass of the lens (2) to about 60 degrees, a temperature that does not exist in the air, so the glass of the lens (2) does not fog up. Furthermore, the heating device (3c) acts as a stopper for the lens (2), and the lens (2) is pushed in and stopped up to the heating device (3c), making it easier to see.

[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 since the slit (3b) exists, slight differences in diameter between the lens (2) and the cover (3) can be managed, 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 drives 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] Fig. 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 keep rain off the lens (2). When it is light rain or foggy, 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 lower part, and when the fan (4b) is operated, the air flows along the axis (28e), passes near the lens (2), and exits from the eaves (3a) at the tip.

[0027] At that time, wind (4) flows near the lens (2), and the lens (2) is dried by 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 if light rain is mixed in, it falls downward. In other words, even with light rain, water is about 2000 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 and the glass of the lens (2) does not fog up. And because the wind (4) comes out of the eaves (3a), it becomes a barrier and keeps out light rain and fog, so moisture in the air does not stick to the lens (2). Example 3

[0028] An example of usage will be described below. Golf broadcasts may be canceled due to rain, or rain may start falling during the broadcast. In such cases, it has been common practice to cover the existing television camera (1), but a cover (3) will be installed on the lens (2) to prevent rainwater from getting on the glass of the lens (2).

[0029] Golf broadcasts are often shot with a telephoto lens (2), so 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, the cover (3) will not appear on the TV screen even if it is 1 meter long. 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] Provide a detailed explanation of symbols and terms. 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 becomes cloudy, so the glass or convex lens must always be kept warm or dried in the air. The cover (3) is made of pipes, but it can also be made of rolled boards. The cover (3) is attached to protect the lens (2) from rain when it rains, and needs to be at least 20 cm long to keep the lens (2) from getting wet. Normally, sports broadcasts are filmed with a telephoto lens, so even if the cover (3) is 50 cm long, the edge of the cover (3) will not show up on the TV screen.

[0031] The eaves (3a) are the tip of the cover (3) cut at an angle between 80 degrees and 45 degrees. The reason why the eaves (3a) is necessary is that when the existing television camera (1) is pointed upwards to film, rain falls on the underside of the cover (3) and the rain splashes onto the screen, so the angle is set at 80 degrees to 45 degrees, which is the sum of the angle at which the existing television camera (1) is pointed upwards and the angle at which the rain comes in on the wind. When the cover (3) is made of a pipe, a slit (3b) is made in the bottom part of the cover (3) so that the lens (2) can be inserted even if it is a little large. 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) where it contacts the lens (2), and the heating device (3c) uses electricity to heat the lens (2), which prevents the lens (2) from fogging up. When the lens (2) comes into contact with the outside air, if the lens (2) is cold, fogging will occur, so on rainy days or when you are about to take pictures in a warm place, turn on the heating device (3c) to warm it up.

[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 shape and the cover (3) cannot be fixed firmly, the hose band (3d) is used to fix the cover. However, using a rubber band will also hold the cover in place. The nozzle (3e) connects the hose (4c) and the cover (3). If there is a slit (3b), it may be installed sideways. The cord (3f) is for the heating device (3c) and is divided into an electrical wire that operates the heating device (3c) and an earth, although the earth 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 passes through the hose (4c) toward the nozzle (3e). The nozzle (3e) is located close to the lens (2), dries the lens (2), and then moves outside 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) is a fan (4b) that blows air (4) to dry it out in rainy weather. The fan (4b) is the one shown in Figure 5. A fan or exhaust fan of about 20W will suffice. The hose (4c) is about Φ30 to Φ50. 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); some have a convex lens attached to the tip, but usually there is a flat piece of glass 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 clamp 3e nozzle 3f cord 4 Wind 4a Pillar 4b Fan 4c Hose

Claims

[Claim 1] A cylindrical cover (3) with a length of 20 cm or more is placed on the lens (2) of an existing television camera (1) only during rainy weather. The cover (3) is a visor part (3a) whose cylindrical tip has an angle of 80 degrees to 45 degrees. The underside of the cover (3) is provided with a slit (3b), This rain lens cover is characterized in that a heating device (3c) is attached to the inside of the cover (3) where it contacts the lens (2).

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