JP3134439B2 - Television camera equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television camera device which is installed outdoors or the like and performs photographing.

[0002]

2. Description of the Related Art As a television camera device, there is a television camera device for photographing in a studio, a type of taking it out outdoors and photographing, and a television camera device installed at a fixed point on the roof such as a mountaintop, a building, or a steel tower. There is also used a television camera device for photographing a landscape or the like. In this television camera device for outdoor installation, the camera device and the lens unit are permanently installed at a predetermined fixed point position, and the control of the operation of the camera unit and the lens unit and the control of the change of the visual field by panning, tilting, and the like are performed by:
This is performed by remote control using a telephone line, wireless communication, or the like. Since this type of television camera device is installed outdoors, the television camera body is configured by being mounted in a waterproof housing to protect the lens unit and the camera unit from rainwater, dust, and the like. The television camera body is configured to be attached to a drive unit that performs a view change operation such as panning and tilting mounted on a predetermined base.

In order to enable photographing, a front plate constituting a front portion of a lens portion in a waterproof housing includes:
A transparent window in which a transparent glass or the like is fitted is provided, and a view of the lens is obtained through the transparent window.
Here, in order to take a picture in rainy weather and to prevent the transparent window from becoming dirty and preventing sufficient visibility from being obtained, a wiper device for wiping the transparent window from the outside of the front plate is provided. The wiper device is operated as needed to wipe off dirt adhering to the outer surface side of the transparent window, so that good visibility can always be ensured.

[0004]

However, there is a limit to the amount of dirt that can be wiped by the wiper device. For example, when extremely stubborn dirt such as bird droppings adheres to the transparent window, it is merely wiped off with the wiper device. Then you cannot completely remove the dirt. In particular, this type of television camera apparatus does not always take a picture, so that dirt attached to the transparent window may stick to the window for a long period of time. Therefore, even if the wiper device is operated while supplying the cleaning water by the water supply mechanism, the transparent window may not be completely cleaned.

The present invention has been made in view of the above points, and has as its object to provide a television camera device capable of reliably removing dirt from a transparent window of a waterproof housing. It is.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a front plate provided with a frame surrounding at least a movable range of a wiper device. The feature is that a rainwater reservoir can be formed inside the frame.

[0007]

In the rainy weather, when the drive unit is operated and the television camera body is operated so as to face directly upward, rainwater accumulates in the rainwater sump in the frame. If the wiper device is operated in a state where rainwater is collected in this manner, dirt adhering to the transparent window can be easily wiped off. Then, when the water stored in the rainwater sump is contaminated, the operation of the wiper device is stopped or while the operation is continued, the television camera body is directed downward and the water in the rainwater sump is drained once. Then, turn the water upward to collect rainwater and continue wiping the transparent window. By repeating this operation, extremely stubborn dirt can be completely removed even if it adheres to the transparent window. In addition, the water collected in the rainwater reservoir can be used as washing water stored in a water storage tank of a water supply mechanism that supplies washing water when the wiper device is operated. For this purpose, an intake port may be provided on the front plate, and the intake port and the water storage tank may be connected by a pipe.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, FIG. 1 shows an overall configuration of a television camera device. In FIG. 1, reference numeral 1 denotes a television camera main body. The television camera main body 1 has a camera housing 1 a and a lens unit 1 b mounted inside a waterproof housing 2. As is clear from this figure, an opening is provided in the front plate 2a of the waterproof housing 2, and a transparent window 3 is formed by attaching a transparent glass to this opening. The lens portion 1b is disposed to face the transparent window 3 so that a field of view for photographing can be obtained through the transparent window 3. In order that the television camera body 1 can be directed in a desired direction, the base 4 includes
A panning mechanism 5 is provided, and a tilting mechanism 6 is connected to the panning mechanism 5. The waterproof housing 2 of the television camera body 1 is connected to the tilting mechanism 6. Therefore, when the panning mechanism 5 is operated, the television camera main body 1 is rotated together with the tilting mechanism 6 in the horizontal direction around the panning mechanism 5. When the tilting mechanism 6 is operated, the television camera body 1 can be rotated in the vertical direction. The operations of the panning mechanism unit 5 and the tilting mechanism unit 6 are performed by remote control, together with lens operations such as zoom, focus, and iris, and operations of the camera unit.

Since this television camera device is installed outdoors, there is a possibility that the transparent window 3 for securing the observation field of view is contaminated with rainwater, dust and the like. However, it cannot be manually washed every time the transparent window 3 is soiled. For this purpose, a wiper device 7 is provided as shown in FIG.
To wipe off contaminants. The wiper device 7 is
An arm 9 is attached to a rotation shaft 8a of the motor 8, and a wiper member 10 is swingably attached to the arm 9. When the motor 8 is operated, the arm 9 moves in the direction of the arrow in FIG. The wiper member 10 reciprocates, during which the wiper member 10 comes into sliding contact with the transparent window 3 to wipe off dirt. Further, it may not be possible to completely clean just by sliding the wiper member 10 into sliding contact with the transparent window 3.
A nozzle 11 for supplying a cleaning liquid to the cleaning water tank 12 is connected to the cleaning water tank 12, and the transparent window 3 of the wiper member 10 is provided in the presence of the cleaning water supplied therefrom.
The dirt is more efficiently removed by performing the rubbing against.

Incidentally, the transparent window 3 is not only stained by rainwater or dust, but also may be stubborn, such as bird droppings. Such dirt cannot be removed only by operating the wiper member 10, but even if a small amount of cleaning water is supplied, the dirt cannot be completely removed. If the wiper 3 is repeatedly operated in the presence of a large amount of washing water, the transparent window 3 can be cleaned to some extent, but the capacity of the washing water tank 12 is limited, and the location where the television camera device is installed For this reason, in many cases, it is not possible to add the cleaning liquid to the cleaning water tank 12, so that a large amount of cleaning water cannot be consumed at one time.

In consideration of the above points, in the present invention,
The transparent window 3 is configured to be washed using rainwater. That is, the frame 13 is provided on the front plate 2a of the waterproof housing 2.
Is provided, and the inside of the frame 13 is
And The frame 13 is formed by bending a plate having a predetermined width to form a frame and fixing the frame 13 to the front plate 2a by welding or the like, or by moving the peripheral wall 2b forward by a predetermined length. It can be formed by extending. The frame 13 completely surrounds a movable range in which the wiper member 10 performs an operation of wiping the entire surface of the transparent window 3. However, the rotating shaft 8a of the motor 8 of the front plate 2a to which the arm 9 of the wiper device 7 is connected does not allow the rainwater collected in the rainwater reservoir S from the lead-out portion of the rotating shaft 8a of the front plate 2a to enter the inside. In order to do so, it is arranged outside the frame 13. Therefore, the arm 9 of the wiper device 7 extends over the frame 13 from the portion connected to the rotation shaft 8a and extends into the frame 13. Further, the frame 13 can also exhibit a function as a harmful light cut section for preventing harmful light from entering the angle of view of the lens during shooting.

Further, a water intake 14 is provided at a position on the front plate 2a avoiding the transparent window 3, and the water intake 14 is provided.
A pipe (both not shown) provided with an on-off valve that opens and closes electromagnetically on the way is connected between the tank and the washing water tank 12. Further, a filter 15 for removing foreign matter is attached to the water intake 14.

The present embodiment is configured as described above, and a photograph can be taken by operating the camera section 1a and the lens section 1b of the television camera body 1 by remote control. When the field of view is changed at the time of shooting, the television camera body 1 can be rotated in the horizontal direction by operating the panning mechanism section 5, and the television camera body can be rotated by operating the tilting mechanism section 6. 1 can be rotated in the vertical direction, and the panning mechanism unit 5 and the tilting mechanism unit 6 can be operated at the same time.
Can be oriented in any direction.

Here, the field of view taken by the TV camera device is obtained through the transparent window 3 of the waterproof housing 2. If the transparent window 3 is dirty, the motor 8 of the wiper device 7 is turned off. By operating the wiper member 10, the dirt can be wiped by sliding the wiper member 10 into contact with the transparent window 3. Also, in rainy weather,
By operating the wiper device 10, a photographing visual field can be secured.

When extremely stubborn dirt adheres to the transparent window 3, the dirt cannot be completely removed only by sliding the wiper member 10 against the surface of the transparent window 3. In particular, since the television camera device is not always kept in a photographing state but is operated as needed, the dirt sticks to the transparent window 3 for a long time, and the operation of the wiper member 10 is started. It becomes impossible to remove dirt only by itself. Further, when the dirt is wiped off by the wiper member 10, the cleaning water can be spouted from the nozzle 11, thereby improving the cleaning efficiency of the transparent window 3.
Is limited, and it may be extremely difficult to supply the washing water depending on the installation location of the television camera device. Therefore, the washing water supplied from the washing water tank 12 cannot be used without limitation.

In the state where stubborn dirt adheres to the transparent window 3 as described above, when it rains, the tilting mechanism 6 is operated, and as shown by the imaginary line in FIG.
The front plate 2a on which the transparent window 3 is mounted is turned upward.
Thereby, the rainwater sump S formed by the frame 13 is formed.
Rainwater accumulates in Activating the wiper device 7 in this state,
The dirt can be removed by sliding the wiper member 10 on the outer surface of the transparent window 3. However, at this time, the on-off valve is closed to keep the dirty water from entering the washing water tank 12. If the water in the rainwater sump S is contaminated by operating the wiper member 10, the front plate 2 a is once turned downward by the tilting mechanism 6, so that the water in the rainwater sump S is removed. Is discharged, and the front plate 2a is turned up again, so that the wiper member 10
Wiping of the transparent window 3 is continued. As a result, even if extremely stubborn dirt adheres to the transparent window 3, the dirt can be completely removed by repeating the above-described operation two or three times.

If the on-off valve is opened, the rainwater stored in the rainwater reservoir can be taken into the washing water tank 12 from the water inlet 14. However, when the dirt on the transparent window 3 is wiped, the water accumulated in the rainwater sump S is contaminated, so that the operation of wiping the dirt on the transparent window 3 is completed and the water is discharged once. After that, the on-off valve is opened, and the rainwater accumulated in the rainwater sump S is discharged to the washing water tank 12.
What should I do? Further, since the filter 15 is attached to the water intake port 14, it is possible to prevent foreign matters such as dead leaves from entering when rainwater is taken into the washing water tank 12. As described above, the rain water is used for washing water tank 1
2, the water can be replenished into the washing water tank 12, so that even when a considerable amount of water is consumed from the nozzle 11 when the wiper device 7 is operated, the washing water tank 12 is It will never be empty.

[0018]

As described above, according to the present invention, the frame is provided on the front plate of the waterproof housing so as to surround at least the movable range of the wiper device. Even if extremely stubborn dirt is adhered to the window, the dirt can be removed very easily and completely to keep the transparent window clean.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a television camera device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 TV camera main body 2 Waterproof housing 2a Front plate 3 Transparent window 6 Tilting mechanism 7 Wiper device 10 Wiper member 13 Frame 14 Water intake 15 Filter S Rainwater collecting part

Claims (3)

(57) [Claims] 1. A television camera main body in which a lens unit and a camera unit are housed in a waterproof housing having a front plate provided with a transparent window for photographing mounted with transparent glass and the like, is connected to a drive unit, A television camera in which the drive unit causes the television camera main body to rotate at least in the vertical direction, and a wiper device for removing dirt attached to the transparent window is mounted on an outer surface of the transparent window. In the device, a frame is provided on the front plate so as to surround at least the movable range of the wiper device, and a rainwater reservoir is formed inside the frame when the front plate is turned upward. A television camera device comprising: 2. The television camera device according to claim 1, wherein a rotating shaft to which an arm of the wiper device is connected is disposed outside the frame in order to operate a wiper member of the wiper device. . 3. A water intake port is provided on the front plate, and a pipe from a water storage tank constituting a water supply mechanism when the wiper device is operated is connected to the water intake port. Television camera device.