JPH07107348A - Industrial television camera device - Google Patents

Abstract

PURPOSE:To provide a television camera device which is capable of sufficiently protecting a television camera from external environments and excellently maintaining photographing environments. CONSTITUTION:An air bag 10 expanding to satisfy the clearance between a hood 3 and the protection case 2 of a television camera 1 and covering the protection case 2 is arranged between this hood and the protection case. Pressurized air of a prescribed temperature is flowed by fixed flow rate in this air bag 10. Thus, the protection case 2 having the television camera 1 is protected from external environments by the air bag 10 and a preferable temperature is held by the air flowing in the air bag 10. The air exhausted from the air bag 1 0 is made to be discharged to the front face side of the protection case 2 where the side of the lens 1a of the television camera 1 is arranged. Thus, the freezing, etc., of the front face side of the protection case 2 can be prevented in a winter season and the photographing environments of the television camera 1 can be excellently maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial television camera device in which a television camera is housed in a protective case.

[0002]

2. Description of the Related Art FIG. 5 is a side sectional view of a conventional industrial television camera device, and FIG. 6 is a front view of this television camera device. In the figure, 1 is a lens 1a for photographing on the front side.
A television camera 2 attached with a housing for accommodating the television camera 1 inside, and a protective case 3 having a transparent glass 2a for photographing attached to a front opening thereof, 3 above the protective case 2,
A hood that covers the left and right sides, the rear side, and the upper front side. The hood 3 is supported by a supporting member (not shown) protruding from the protective case 2.

Reference numeral 4 denotes a heater attached to the upper surface side of the protective case 2 below the hood 3, and 5 wipes the transparent glass 2a of the protective case 2 with a wiper blade 5a to clean the transparent glass 2a. It is a wiper device.
The device body 5b of the wiper device 5 is located below the hood 3,
It is attached to the upper surface side of the protective case 2. A cable nozzle 6 is attached to the protective case 2 to attach a cable (not shown) to the television camera 1.

Next, the operation of this television camera device will be described. This TV camera device is attached, for example, to a predetermined place outdoors, and the TV camera 1 in the protective case 2 passes through the transparent glass 2a of the protective case 2,
For example, the operating state of factory equipment is constantly photographed, and the image is sent to a predetermined monitoring television. In this case, the protection case 2, the hood 3, the heater 4, and the wiper device 5 of the TV camera device protect the TV camera 1 against changes in the outside temperature and weather, and secure a visual field around the TV camera 1. In addition, it has a role of maintaining a good shooting environment of the television camera 1.

That is, the protection case 2 protects the television camera 1 against raindrops, temperature, etc. by housing the television camera 1 inside. Further, the hood 3 covers the outside of the protective case 2 to prevent the protective case 2 from being directly affected by the direct sunlight of the sun, raindrops and the like.
Further, the heater 4 heats the protective case 2 to prevent the protective case 2 and the television camera 1 from freezing. The wiper device 5 also removes raindrops and the like adhering to the outer surface of the transparent glass 2a of the protective case 2 to secure the field of view of the television camera 1.

[0006]

However, in the above-mentioned conventional TV camera apparatus, the upper side of the protective case 2 is heated by the heater 4 and the protective case 2 is protected against freezing and snow, but the protective case 2 has a problem. Both sides,
On the front side and the rear side, there is a problem that freezing and snow accumulation are likely to occur due to the influence of wind and the like. For this reason, this TV camera device has problems that the TV camera 1 is not sufficiently protected and that it is difficult to obtain a good shooting environment. In addition, since the lower surface side of the protective case 2 is generally attached to the ground structure, it is unlikely to be affected by the external environment.

The present invention has been made in order to solve the above problems, and a television camera device capable of sufficiently protecting the television camera against an external environment such as weather conditions and maintaining a good photographing environment. It is intended to provide.

[0008]

A first aspect of the present invention is an industrial television camera apparatus in which a hood covers the outside of a protective case in which a television camera is housed. An air bag, which expands so as to fill the gap between the case and the cover, covers the protective case, and through which the pressurized air of a predetermined temperature flows at a constant flow rate through the inlet / outlet part, and That is, the air outlet of the air bag is arranged toward the front side of the protective case located on the lens side of the television camera.

According to a second aspect of the present invention, in an industrial television camera device in which a hood covers the outside of a protective case in which a television camera is housed, a hood and a protective case are provided between the hood and the protective case. This is to arrange the bag containing the antifreeze liquid, which is filled with the heat insulating antifreeze liquid and expands so as to fill the gap between them and covers the protective case.

According to a third aspect of the present invention, in an industrial television camera device in which a hood covers the outside of a protective case in which a television camera is housed, a hood and a protective case are provided between the hood and the protective case. An air bag that expands so as to fill the gap between them and covers the protective case is arranged, and a heater that heats the internal air is arranged in the air bag.

According to a fourth aspect of the present invention, in an industrial television camera device in which a television camera is housed in a protective case, it is expanded between the protective case and the television camera so as to fill a gap therebetween. Along with covering the TV camera, an air bag is placed through which the pressurized air of a predetermined temperature flows at a constant flow rate through the entrance / exit, and the exit of the compressed air of this air bag is placed outside the protective case. It is arranged.

[0012]

In the first aspect of the present invention, even if cold air, snow, or the like tries to approach the protective case side through the hood or through the gap between the hood and the protective case in winter, for example,
This protective case is covered with an inflated bladder,
This cold air and snow cannot get close to the protective case. In this case, since the pressurized air having a predetermined temperature is flowed inside the air bag at a constant flow rate and is heated, the air bag prevents the protective case from being cooled (temperature decrease).

Further, since the air discharged from the air bag is ejected from the outlet of the air bag to the front side of the protective case,
This air prevents the front side of the protective case from freezing and the like, so that the front view of the television camera can be sufficiently secured.

In the second aspect of the present invention, the protective case is covered with a bag containing antifreeze liquid instead of the air bag, and the antifreeze liquid having a heat insulating property in the bag containing antifreeze liquid protects the case from outside cold air and heat. Is designed to be insulated and protected. Since the antifreeze liquid does not freeze, the bag containing the antifreeze liquid is not destroyed in winter.

In a third aspect of the present invention, a heater is arranged in an air bag similar to the air bag of the first aspect, and the heat of the heater heats a protective case and the like through the air bag. To prevent the protection case and the TV camera inside the protection case from freezing. Since the air in the air bag is not diffused due to the influence of wind or the like, the heater can efficiently heat the protective case and the like.

According to a fourth aspect of the present invention, a television camera is directly covered with an air bag similar to the air bag of the first invention, and pressurized air of a predetermined temperature is supplied through the air bag at a constant flow rate. , I try to keep the temperature of this TV camera proper. In this case, the pressurized air supplied into the air bag is
Since the compressed air is discharged to the outside of the protective case without touching the TV camera, it is not necessary to use special humidity-controlled air.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. FIG. 1 is a side sectional view of a television camera device according to an embodiment of the first invention, and FIG. 2 is a front view of the television camera device. The same or corresponding parts as those of the television camera device shown in FIGS. 5 and 6 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 10 expands so as to fill a gap between the hood 3 and the protective case 2 by supplying air, so that the protective case 2 and the television camera 1 are exposed to various external environments (for example, weather conditions). It is an air bag to protect against. The air bag 10 is made of inflatable and expandable thin synthetic resin or rubber. The air bag 10 is provided with an air inlet portion 10a on the lower rear surface side of the protective case 2, and at a position above the front side of the protective case 2 facing the transparent glass 2a side of the protective case 2, Air outlet 10b
Is provided. Then, pressurized air having a predetermined temperature is flown into the air bag 10 through the inlet portion 10a and the outlet portion 10b at a constant flow rate. 11 is an inlet portion 10 of the air bag 10.
It is a seamless tube for air supply attached to a. Note that this television camera device is not provided with a heater.

Next, the air bag 1 of this television camera device.
The operation of 0 will be described. In order to make the description easier to understand, a case where the television camera device is installed outdoors will be described.

First, in winter when the temperature is low, the air bag 10 is introduced from the inlet 10a through the seamless tube 11.
The pressurized air A heated to a predetermined temperature (for example, 15 to 35 ° C.) is supplied into the air bag 10, and the air bag 10 is inflated to fill the gap between the protective case 2 and the hood 3. Next, the inlet part 1 is inserted into the air bag 10 through the seamless tube 11.
The pressurized air A having a constant flow rate is supplied from 0a, and the supplied pressurized air A is discharged to the outside from the outlet 10b.

As a result, the air bag 10 covers the protective case 2 in a normally inflated state, and prevents the protective case 2 from coming into contact with the outside air and being cooled. For this reason, the protective case 2 will not come into contact with cold air or snow even under weather conditions in which wind blows or snow falls. In addition, the air bag 10 heats the protective case 2 via the pressurized air A to prevent the temperature of the protective case 2 and the television camera 1 from decreasing. In this case, even if the air bag 10 is cooled by directly touching the outside air or touching the hood 3, the pressurized air A in the air bag 10 is discharged to the outside, and a new one is constantly replenished. The air temperature in the air bag 10 does not drop significantly. That is, the air bag 10 prevents the protective case 2 from coming into contact with the outside air, etc., and heats the protective case 2 and the TV camera 1 via the pressurized air A, which freezes them or lowers the temperature below a certain temperature. To prevent cooling.

Further, the pressurized air A discharged from the outlet portion 10b in the air bag 10 is the transparent glass 2 of the protective case 2.
a, the wiper blade 5a, etc. are sprayed onto the transparent glass 2a and the wiper blade 5a.
Is heated by. Therefore, in this television camera device, the transparent glass 2a does not fall to the freezing temperature, frost or snow adheres to the transparent glass 2a, and the wiper blade 5a does not move due to freezing. The shooting environment is maintained in good condition.

Next, in summer when the temperature is high, pressurized air B cooled to a predetermined temperature (for example, 15 to 35 ° C.) is supplied to the air bag 10, and the air bag 10 is protected by the protective case 2 and the hood 3. And the compressed air B of a predetermined flow rate is caused to flow into the air bag 10 through the inlet portion 10a and the outlet portion 10b. By this, the air bag 10
Protects the protective case 2 from coming into contact with the outside air and cools the protective case 2 and the television camera 1 via the pressurized air B to prevent them from being heated to a low temperature or higher. Here, when the air bag 10 directly touches the outside air or touches the hood 3 heated by direct sunlight,
Even if the air bag 10 is heated, the pressurized air B in the air bag 10 is discharged to the outside and is constantly replenished with new pressurized air B, so that the temperature in the air bag 10 does not rise significantly.

If the cooled pressurized air B is not available, the air bag 10 is evacuated to remove the air bag 10.
Is deflated to bring the air bag 10 into close contact with the protective case 2 side. As a result, a sufficient space for heat insulation is provided between the hood 3 and the protective case 2, and the temperature rise of the protective case 2 is suppressed.

As described above, in this television camera device, the air bag 10 is used to prevent the protective case 2 from being cooled or heated, so that the television camera can be protected and at the same time during the winter season. By warming the transparent glass 2a of the protective case 2 with the pressurized air A discharged from the air bag 10, it is possible to improve the shooting environment of the television camera. In this case, since the outer shape of the air bag 10 can be changed by the internal air pressure, even if the sizes of the protective case 2 and the hood 3 are slightly changed depending on the size of the TV camera 1, one air bag 10 can be used for various TVs. It has the advantage that it can be used in camera devices.

In the first embodiment, the air bag 10 is arranged only in the part where the hood 3 is provided, but the outer surface of the protective case 2 which is not covered with the hood 3 is covered with the air bag 10. However, the same effect can be obtained. However, in this case, it is necessary to cover the outer surface of the air bladder 10 with a material capable of sufficiently protecting the inner side against an impact or the like from the outside.

The inner surface side of the air bag 10 may be made of a material having good thermal conductivity, and the outer surface side of the air bag 10 may be made of a material having a heat insulating property. This prevents heat from moving from the air bag 10 side to the hood 3 side in winter, and at the same time sufficiently transfers heat from the air bag 10 side to the protective case 2 side for protection. The temperature drop of the case 2 and the TV camera 1 is further prevented.

Example 2. Next, one embodiment of the second invention of the present invention will be described. Although the air bag 10 is arranged between the protective case 2 and the hood 3 in the television camera device of the first embodiment, in the television camera device of the second embodiment, the air bag 10 is internally provided between the protective case 2 and the hood 3. A bag containing the antifreeze liquid filled with the antifreeze liquid is arranged, and the outer surface of the protective case 2 is covered with the bag containing the antifreeze liquid. In this case, the antifreeze liquid should be as highly heat insulating as possible.

Next, the function and effect of the bag containing the antifreeze liquid will be described. In the summer, even if the temperature of the hood 3 rises due to direct sunlight, for example, the heat from the hood 3 is not transferred to the protective case 2 side because the bag containing the antifreeze liquid is present between the hood 3 and the protective case 2. The temperature rise in the protective case 2 is suppressed. Further, in winter, even if the outside air temperature decreases, the heat inside the protective case 2 does not escape to the outside due to the heat insulating effect of the bag containing the antifreezing liquid, and the inside of the protective case 2 is kept constant by the heat generated by the TV camera 1. Hold at temperature.

Since the antifreeze liquid does not freeze even in winter, the bag containing the antifreeze liquid is not destroyed by the expansion due to freezing.

Example 3. FIG. 3 is a side sectional view of a television camera device according to an embodiment of the third invention. In the figure, reference numeral 20 expands by supplying air so as to fill a gap between the hood 3 and the protective case 2 to protect the protective case 2 and the TV camera 1 against various external environments (for example, weather conditions). It's an air bag. The structure of the air bag 20 is the same as that of the air bag 10 except that it has only an inlet portion 20a and no outlet portion. 21 is an air bag 2
It is a heater provided inside 0. The power source of the heater 21 is taken from the inlet portion 20a side of the air bag 20. The other constituent features are the same as those of the television camera device of the first embodiment.

Next, the operation of this television camera device will be described. In winter when the temperature is low, pressurized air is supplied into the air bag 20 through the inlet portion 20a, and the air bag 20 is inflated to fill the gap between the hood 3 and the protective case 2. Then, in this state, the inlet portion 20a is closed. Next, the heater 21 is operated to heat the air in the air bladder 20. Although heat is released from the air bag 20 to the outside air side, the heat is supplied by the heater 21 correspondingly, so that the temperature inside the air bag 20 becomes substantially constant. As a result, the protective case 2 is covered with the air bag 20 having the pressurized air, the temperature drop due to the outside air is prevented, and the same effect as that of the air bag 10 of the television camera device of the first embodiment can be obtained. it can.

In this case, the discharged air cannot be blown onto the transparent glass 2a of the protective case 2, but since the air is not consumed, the pressurized air source is unnecessary except at the start, and the operating cost is reduced. Can be achieved. Further, in this case, since the pressurized air is heated by the heater 21, it is not necessary to preheat the pressurized air.

In the summer, the air bag 20 is deflated and the air bag 20 is deflated so that the air bag 2
0 is brought into close contact with the protective case 2 side. As a result, a sufficient space for heat insulation is provided between the hood 3 and the protective case 2, and the temperature rise in the protective case 2 is suppressed.

Example 4. FIG. 4 is a side sectional view of a television camera device according to a fourth embodiment of the present invention. In the figure, numeral 30 expands so as to fill the gap between the protective case 2 and the television camera 1 by the supply of air, so that the television camera 1 in the protective case 2 can be exposed to various external environments (for example, weather conditions). An air bag to protect. Like the air bag 10, the air bag 30 is also made of a thin synthetic resin or rubber that can be expanded and contracted, and has an inlet portion 30a on the lower rear side of the television camera 1. However,
The outlet 30b of the air bag 30 is arranged outside the protective case 2 through the opening 2b so that the air in the air bag 30 does not directly contact the television camera 1. The air bag 30 has an inlet portion 30a and an outlet portion 30b.
A constant flow rate of pressurized air having a predetermined temperature is made to flow therethrough. The rest of the configuration is the same as the television camera device of the first embodiment.

Also in this television camera device, the same effect as that of the television camera device of the first embodiment can be obtained through the air bag 10, and the air bag 30 is supplied with a predetermined heated or cooled pressurized air. By causing a constant flow rate, the temperature change of the television camera 1 can be suppressed, and the television camera 1 can be further protected against various external conditions. In addition, in particular, since the pressurized air discharged from the air bag 30 is directly discharged to the outside of the protective case 2, it is not necessary to perform humidity adjustment or the like on the pressurized air so as not to inconvenience the television camera 1. Easy access to compressed air

The air bag 30 may be arranged in the television camera apparatus of the second or third embodiment, and a predetermined heating or cooling air may flow through the air bag 30 at a constant flow rate.

[0038]

Since the present invention is constituted as described above, it has the following effects.

According to the first aspect of the present invention, in the industrial television camera device in which the outside of the protective case in which the television camera is housed is covered with the hood, the space between the hood and the protective case is increased. In addition, an air bag that expands so as to fill the gap between them, covers the protective case, and through which the pressurized air of a predetermined temperature flows at a constant flow rate is arranged through the inlet / outlet part, and the air in this air bag is arranged. Since the exit of the is placed toward the front side of the protective case located on the lens side of the TV camera, even if the external environment such as weather conditions deteriorates, the TV camera can be fully secured through this air bag. In addition to the protection, the air discharged from the air bag can also maintain a good shooting environment.

According to the second aspect of the present invention, in the industrial television camera device in which the outside of the protective case in which the television camera is housed is covered by the hood, the space between the hood and the protective case is increased. The heat-insulating antifreeze solution expands to fill the gap between them, and a bag with a built-in antifreeze solution is placed to cover the protective case, so even if the external environment such as weather conditions deteriorates The TV camera can be sufficiently protected through the built-in bag.

According to the third aspect of the present invention, in the industrial television camera device in which the outside of the protective case in which the television camera is housed is covered with the hood, the space between the hood and the protective case is increased. In addition, since the air bag that expands so as to fill the gap between them is arranged to cover the protective case, and the heater that heats the internal air is arranged in the air bag, the external environment such as weather conditions is Even if it deteriorates, the television camera can be sufficiently protected through the air bag having the heater. In this case, the pressurized air is not always required, so that the operating cost can be reduced.

According to the fourth aspect of the present invention, in the industrial television camera device in which the television camera is housed in the protective case, between the protective case and the television camera,
The air bag is expanded so as to fill the gap between them and covers the television camera, and an air bag through which the pressurized air of a predetermined temperature flows at a constant flow rate is arranged through the inlet / outlet part, and the air outlet part of the air bag is arranged. Since it was attached to the external opening provided in the protective case, even if the external environment such as weather conditions deteriorates,
The television camera can be sufficiently protected through the air bag. In this case, the air discharged from the air bag does not come into contact with the television camera, so it is not necessary to use air whose humidity is adjusted as the pressurized air.

[Brief description of drawings]

FIG. 1 is a side sectional view of a television camera device according to a first embodiment of the present invention.

FIG. 2 is a front view of the television camera device of FIG.

FIG. 3 is a side sectional view of a television camera device according to Embodiment 3 of the present invention.

FIG. 4 is a side sectional view of a television camera device according to Embodiment 4 of the present invention.

FIG. 5 is a side sectional view of a conventional television camera.

6 is a front view of the television camera device of FIG.

[Explanation of symbols]

 1 TV camera 1a Lens 2 Protective case 3 Hood 10 Air bag 10b Exit part 20 Air bag 21 Heater 30 Air bag 30b Exit part

Claims (4)

[Claims] 1. In an industrial television camera device in which the outer side of a protective case in which a television camera is housed is covered with a hood, a space between the hood and the protective case is filled. An air bag that is inflated to cover the protective case and through which the pressurized air of a predetermined temperature flows at a constant flow rate through the inlet / outlet portion, and the air outlet portion of the air bag is An industrial television camera device, which is arranged toward the front side of the protective case located on the lens side of the television camera. 2. An industrial television camera device in which the outside of a protective case in which a television camera is housed is covered with a hood, wherein an insulating antifreeze liquid is filled between the hood and the protective case. As a result, the industrial television camera device is characterized in that the bag containing the antifreeze liquid is arranged so as to expand so as to fill the gap between them and cover the protective case. 3. In an industrial television camera device, wherein the outer side of a protective case in which a television camera is housed is covered with a hood. In an industrial television camera device, a gap between the hood and the protective case is filled. Thus, an air bag that expands to cover the protective case is arranged, and a heater that heats the internal air is arranged in the air bag. 4. An industrial television camera device in which a television camera is housed in a protective case, which covers the television camera by expanding the protective case and the television camera so as to fill a gap therebetween. At the same time, an air bag in which pressurized air having a predetermined temperature is flowed at a constant flow rate is arranged through the inlet / outlet portion, and the outlet portion of the pressurized air in the air bag is arranged outside the protective case. An industrial TV camera device characterized by the above.