JPH0787367A - Tv camera device - Google Patents

Abstract

PURPOSE:To easily adjust illuminance to an image pickup condition without changing a whole cover and to prevent internal parts from being viewed from outside through an eye opening part. CONSTITUTION:The composite cover 11 constituted by plural materials different in the transmission factor of light is provided at the inner side of an eye opening cover 7 so that it covers a CCD block 6 and it can be rotated. The composite cover 11 is rotated by a composite cover driving motor 12. Thus, the material of a part facing the eye opening part can be changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TV camera device in which an image pickup portion is covered with a cover so as not to be aware of the presence of the camera.

[0002]

2. Description of the Related Art Conventionally, for example, when a TV camera device for monitoring is installed in a banquet hall, department store, restaurant, boutique, showroom, etc. of a hotel, the atmosphere of the interior is not destroyed and the customer is not uncomfortable. A TV camera device whose outer peripheral portion is covered with a cover is often used. As such a conventional TV camera device, for example, JP-A-3-289582 and JP-A-4-289582.
108274 and Japanese Utility Model Laid-Open No. 3-101080.

FIG. 6 is a perspective view showing an example of a conventional TV camera device. In the figure, 1 is a disk-shaped base unit that is mounted on the ceiling or the like of the installation location, 2 is a pan rotating plate that is mounted on the base unit 1 so as to be rotatable about an axis perpendicular to the base unit 1, and 3 Is a pan-direction drive motor that is attached to the base unit 1 and rotates the pan rotating plate 2, that is, performs a pan operation.

Reference numeral 4 denotes a tilt rotary plate which is mounted on the pan rotary plate 2 so as to be rotatable about an axis parallel to the pan rotary plate 2, and 5 is mounted on the pan rotary plate 2 to rotate the tilt rotary plate 4. That is, a tilt direction drive motor for performing a tilt operation, and a C as an image pickup unit provided on the pan rotation plate 2 so as to rotate together with the tilt rotation plate 4.
The CCD block 6 is a CD block in which a CCD (not shown) as an image pickup element and a lens 6a are integrated.

Reference numeral 7 denotes a dome-shaped open cover attached to the pan rotary plate 2 so as to cover the tilt rotary plate 4, the tilt direction drive motor 5 and the CCD block 6. The open cover 7 is In FIG. 6, it is transparent for illustration of the inside, but in reality, as shown in FIG.
The opening portion 7a made of a light transmitting material is provided only in the portion of the lens 6a corresponding to the tilting operation, and the other portion (hatched portion) is opaque.

Reference numeral 8 denotes a pan rotating plate 2 and a pan direction driving motor 3
And a dome-shaped transparent cover attached to the base unit 1 so as to cover the open cover 7, and 9 is a CC
A signal transmission cable 10 for transmitting a signal from the D block 6 to the base unit 1 is a coaxial cable drawn out from the base unit 1.

Next, the operation will be described. The light transmitted through the transmissive cover 8 and passing through the perforated portion 7a of the perforated cover 7 enters the CCD block 6 from the lens 6a, and C
It is converted into an electric signal by the CD. The image converted into an electrical signal by the CCD block 6 is input to the base unit 1 through the signal transmission cable 9. In the base unit 1, the transmitted signal is converted into a video signal by the video signal processing circuit. Furthermore, this video signal is AGC
It is output from the coaxial cable 10 to a monitor (not shown) or the like through an (Automatic Gain Control) circuit, an image quality correction circuit, or the like.

Power is supplied to the coaxial cable 10 from the controller (not shown) side, and at the same time, drive control signals for the pan direction drive motor 3 and the tilt direction drive motor 5 are superimposed. This drive control signal is separated by the base unit 1, and the motors 3, 5 are controlled based on the contents of the drive control signal. That is, during the pan direction control, the pan direction drive motor 3 is driven to rotate the pan rotary plate 2 together with the open cover 7, and during the tilt direction control, the tilt direction drive motor 5 is driven to rotate the tilt rotary plate 4. By doing so, the pan / tilt operation of the CCD block 6 including the lens 6a is performed.

[0009]

In the conventional TV camera device constructed as described above, the openable cover 7 is used.
Since the CCD block 6 receives light through the eye opening 7a, internal parts such as the CCD block 6 and the tilt rotation plate 4 are visible from the eye opening 7a,
There was a problem of impairing the appearance. On the other hand, in order to make the internal parts invisible from the outside, there is also a method of using smoked glass or mirror glass as the inner cover material, but with such a method, the illuminance decreases,
There was a problem that the sensitivity became poor. In particular,
When using smoked glass or mirror glass, it is necessary to select a cover material with a transmittance according to the imaging conditions of the subject, that is, the brightness, etc., and replace the entire cover, which is a very laborious task. There was a problem that it would end up.

The present invention has been made to solve the above problems, and it is possible to easily take an image of illuminance in accordance with an image pickup condition without replacing the entire cover, and to externally An object of the present invention is to obtain a TV camera device capable of preventing internal parts from being seen from the inside.

[0011]

[Means for Solving the Problems] T according to the invention of claim 1
In the V camera device, a composite cover made of a plurality of materials having different light transmittances is rotatably provided on either the inside or the outside of the open cover so as to cover the imaging unit. By rotating the shaped cover, the material of the portion facing the opening can be changed.

According to a second aspect of the present invention, there is provided a TV camera device,
The composite cover is configured by combining a plurality of divided parts made of materials having different light transmittances.

A TV camera device according to a third aspect of the present invention is
Data for selecting a material is written on the composite cover, a data reading device for reading this data is provided, and a motor for rotating the composite cover is driven according to information from the data reading device. .

A TV camera device according to a fourth aspect of the present invention is
Data is formed by a data bit and a data detection bit provided corresponding to a position of the data of the data bit, and a data reading head for reading the data bit and a data detection head for detecting the data detection bit read the data. It is provided in the device.

According to a fifth aspect of the present invention, there is provided a TV camera device,
An image pickup unit is housed in an openable cover provided with an openable unit for exposing the lens, and the openable cover is integrally pan-tilted with the image pickup unit.

[0016]

According to the first aspect of the present invention, the composite cover prevents the internal parts from being seen through the openings of the cover, and the composite cover is rotated to transmit the light received by the imaging section. Change.

According to the second aspect of the present invention, the composite cover can be easily assembled by combining the divided portions to form the composite cover.

According to the third aspect of the present invention, the material can be easily changed by controlling the drive of the motor for rotating the composite cover according to the information from the data reading device.

According to the fourth aspect of the present invention, the data bit is read at a position where the data detection bit is present.
Reads data bits more accurately regardless of the rotational speed of the composite cover.

According to the fifth aspect of the present invention, the eye-opening cover is integrated with the image pickup portion to perform the pan / tilt operation, so that the eye-opening portion can expose only the lens.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. FIG. 1 shows a TV according to an embodiment of the invention of claim 1.
FIG. 8 is a perspective view showing a camera device, and the same or corresponding parts as in FIGS. 6 and 7 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 11 is a dome-shaped compound rotatably attached to the pan rotary plate 2 inside the open cover 7 so as to cover the tilt rotary plate 4, the tilt direction drive motor 5 and the CCD block 6. Is a shaped cover,
The composite cover 11 is composed of a plurality of materials having different light transmittances such as IR glass, smoked glass and mirror glass. A compound cover driving motor 12 is provided on the pan rotation plate 2 and rotates the compound cover 11.

Next, the operation will be described. The CCD block 6 performs a pan / tilt operation as in the conventional example,
At this time, by rotating the composite cover 11 with respect to the open cover 7, the material of the composite cover 11 facing the open portion 7a can be selected. That is, the composite cover 11 is arranged so that the portion of the material that provides the optimum illuminance is located inside the opening 7a according to the imaging conditions of the subject.
Is rotated.

For example, when a TV camera device is installed near a large window, the interior of the room is brightened by sunlight during the day, so it is necessary to use a cover material having a low light transmittance and at night. Since it becomes dark in this case, it is necessary to secure sensitivity by using a cover material having a high transmittance. Therefore, by forming the composite cover 11 from a material having a low transmittance and a material having a high transmittance and rotating the composite cover 11, an optimum illuminance can be obtained according to the situation.

In the rotation control of the composite cover 11, the drive control signal of the composite cover drive motor 12 is superimposed on the drive control signal for the pan / tilt operation input from the controller to the base unit 1 through the coaxial cable 10. It is done by doing. The drive control signal of the composite cover drive motor 12 is separated by the base unit 1,
The composite cover drive motor 12 is controlled based on the signal, and the composite cover 11 is rotated.

In such a TV camera device, the composite cover 11 having a plurality of material parts having different light transmittances.
Since it is possible to select a material that is suitable for the imaging conditions from the above materials by rotating it using, a material that is relatively hard to transmit light in a bright place can be selected. It is possible to prevent the internal parts from being seen through the opening 7a, which improves the appearance. vice versa,
In a dark place, even if a material that easily transmits light is selected, the surrounding parts are dark and the internal parts are not noticeable. Further, since the material is selected by rotating the composite type cover 11, the troublesome work of replacing the entire cover is unnecessary.

In the first embodiment, the composite cover 11 is used.
Although it is arranged inside the open-type cover 7, it may be arranged outside the open-type cover 7, and the same effect as that of the above-described first embodiment can be obtained.

Example 2. Next, FIG. 2 is a perspective view showing a composite cover of a TV camera device according to an embodiment of the invention of claim 2, (a) showing a disassembled state and (b) showing an assembled state. In the figure, 13 is a first module glass made of IR glass, 14 is a second module glass made of mirror glass, 15 is a third module glass made of smoked glass, and 16 is a transparent glass. A fourth module glass configured,
9 pieces of module glass 13, each of which is a dividing part,
A dome-shaped composite cover 17 is formed by 14, 15, and 16. Also, each module glass 13, 1
4, 15 and 16 have an angle and a size capable of covering the entire opening 7a of the opening-type cover 7 and can be fitted into each other.

Module glass 13, 1 as described above
By assembling the composite cover 17 by combining 4, 15 and 16, the combination of materials can be easily changed depending on the purpose of use and the place of use.

Example 3. Next, FIG. 3 is a perspective view showing a TV camera device according to an embodiment of the present invention. In the figure, reference numeral 18 denotes a composite cover provided inside the open cover 7, and data such as a material of glass and a rotation angle is written on the inner lower end of the composite cover 18. Other parts are the same as those of the composite cover 11 of the first embodiment. 19 is provided on the pan rotating plate 2,
This is a data reading device for reading the data of the composite cover 18.

Next, the operation will be described. For example, when a control signal for changing the material of the composite cover 18 to IR glass is input to the base unit 1, the control signal is separated by the base unit 1 and the composite cover drive motor 12 is driven, The composite cover 18 is rotated at a constant speed. At this time, the data written on the composite cover 18 is sampled and read by the data reading device 19 at regular intervals.

The read data is sent to a microcomputer mounted inside the base unit 1, and the microcomputer determines whether the glass is IR glass.
When it is determined that the glass is IR glass, the composite cover drive motor 12 is stopped, and the rotation of the composite cover 18 is stopped. In addition, the composite cover 1 with an accurate rotation angle
When 8 is stopped, the data is read by the same method as described above, and the composite cover 18 is stopped at the designated rotation angle.

In such a TV camera device, the composite cover 18 is used without using a highly accurate and expensive motor such as a stepping motor, and without performing a complicated calculation by a microcomputer for controlling the motor. It is possible to easily discriminate the exact position, and it is possible to easily select and change the material.

In the third embodiment, the composite cover 18 is used.
Although the case where data is written inside is shown, the data may be written outside the composite cover 18, and in this case, the data reading device 19 may be arranged outside the composite cover 18. Even when the composite cover 17 as in the second embodiment is used, the same effect as in the third embodiment can be obtained by entering the material of the module glass and the rotation angle.

Example 4. Next, FIG. 4 is an explanatory view showing an example of data written on the composite type cover and a data reading device according to an embodiment of the present invention. In the figure, 2
0 is a data bit composed of conductor data 20a and non-conductor data 20b, and 21 is a data bit 20.
Data detection bits made of a conductor provided corresponding to the respective data 20a, 20b of
It has two heads, a data read head 23 and a data detection head 24.

Next, the operation will be described. When the composite cover is rotated as in the third embodiment, the data detection bit 21 and the data bit 20 written on the composite cover pass while contacting the data detection head 24 and the data reading head 23, respectively. For data reading, it is determined that there is data if a current is passed through the data detection head 24 and there is conduction, and sampling of the data bit 20 is permitted. Then, after the sampling is permitted, a current is passed through the data reading head 23 to give 1 if there is conduction and 0 if there is no conduction.
Determine the data as.

If the data detection bit 21 is not provided, the data may not be normally read unless the rotation speed of the composite cover is kept constant. For example,
When the conductor data 20a continues for 3 bits continuously and the rotation speed of the composite cover is unstable, the moving speed of the data bit 20 also becomes unstable, and 3 bits may be misread as 2 bits or 4 bits. There is.

On the other hand, in the fourth embodiment, the data detection bit 21 and the data detection head 24 for detecting it.
Since and are used, even if the rotation speed of the composite cover is unstable and the moving speed of the data bit 20 is unstable,
Data can be read more reliably.

Example 5. FIG. 5 is a perspective view showing a TV camera device according to an embodiment of the present invention. In the figure, 31 is a cylindrical base unit cover attached to the base unit 1, 32 is a dome-shaped transparent cover continuously attached to the base unit cover 31, and 33 is a pan direction and a tilt direction. A spherical openable cover that is provided inside the transparent cover 32 as much as possible.
The D block 6 is fixed. Further, the open cover 33 is provided with a circular open portion 33a, and the tip of the lens 6a is exposed from the open portion 33a.

34 is attached to the base unit 1,
A pan-direction drive motor for panning the open-type cover 33, and a tilt-direction drive motor 35 mounted on the base unit 1 for tilting the open-type cover 33.

Next, the operation will be described. The spherical open cover 33 accommodating the CCD block 6 performs a pan / tilt operation by driving a pan direction drive motor 34 that is vertically in contact with the outer peripheral surface thereof and a tilt direction drive motor 35 that is in horizontal contact with the outer peripheral surface thereof. .

In such a TV camera device, a spherical openable cover 33 is used, and the openable cover 33 is C-shaped.
Since the pan / tilt operation is performed together with the CD block 6, the opening portion 33a only needs to expose the lens 6a, and therefore other internal parts cannot be seen from the opening portion 6a. In addition, the number of parts can be reduced and the external dimensions of the entire device can be reduced. However, the open cover 3
Since 3 has a spherical shape, the base unit cover 31 is required in addition to the transmissive cover 32. However, the base unit cover 31 can be embedded in an installation surface such as a ceiling. The device can be prevented from becoming bulky.

[0043]

As described above, in the TV camera device according to the first aspect of the invention, the composite type cover made of a plurality of materials having different light transmittances is opened so as to cover the image pickup section. It is rotatably installed on either the inside or outside of the cover, and the material of the part facing the opening can be changed by rotating this composite type cover, so the illuminance is simple without replacing the entire cover. In addition, it is possible to take an image according to the image pickup condition, and it is possible to prevent the internal parts from being seen from the outside.

In the TV camera device according to the second aspect of the present invention, since the composite cover is configured by combining a plurality of division parts made of materials having different light transmittances,
In addition to the same effect as the invention of claim 1, the combination of the materials forming the composite cover can be easily changed according to the intended use.

Further, in the TV camera device according to the invention of claim 3, the data for selecting the material is written on the composite type cover, the data reading device for reading the data is provided, and the data reading device is provided. Since the motor for rotating the composite type cover is driven, in addition to the same effect as the invention of claim 1, a microcomputer for controlling the motor is used without using an expensive motor such as a stepping motor. Without complicated calculations due to
The composite cover can be rotated more accurately and the material can be easily changed.

Furthermore, in the TV camera device according to the invention of claim 4, the data is constituted by the data bit and the data detection bit provided corresponding to the position of the data of the data bit, and the data bit is read. Since the data reading head and the data detecting head for detecting the data detecting bit are provided in the data reading device, in addition to the same effect as that of the invention of claim 4, the rotation speed of the composite cover is unstable and the data bit is detected. Even if the moving speed of is unstable,
There is an effect that data can be read more reliably.

According to a fifth aspect of the present invention, in the TV camera device, the image pickup section is housed in the openable cover provided with the openable section for exposing the lens, and the openable cover is integrally panned with the image pickup section. Since the tilt operation is performed, it is possible to prevent the internal parts from being seen through the opening portion, and it is possible to reduce the number of parts and to downsize the whole.

[Brief description of drawings]

FIG. 1 is a perspective view showing a TV camera device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a composite cover of a TV camera device according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a TV camera device according to an embodiment of the present invention.

FIG. 4 is an explanatory view showing an example of data written on a composite type cover and a data reading device according to an embodiment of the invention of claim 4;

FIG. 5 is a perspective view showing a TV camera device according to an embodiment of the invention of claim 5;

FIG. 6 is a perspective view showing an example of a conventional TV camera device.

FIG. 7 is a perspective view showing the open cover of FIG.

[Explanation of reference numerals] 6 Imaging unit 6a Lens 7 Opening cover 7a Opening part 11 Composite cover 12 Composite cover drive motor 13 First module glass (dividing part) 14 Second module glass (dividing part) 15 Third module glass (divided part) 16 Fourth module glass (divided part) 17 Composite cover 18 Composite cover 19 Data reader 20 Data bit 21 Data detection bit 22 Data reader 23 Data read head 24 Data detection head 33 Opening cover 33a Opening part

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 28, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

The present invention has been made to solve the above-mentioned problems, and it is possible to easily perform imaging in accordance with optimum imaging conditions without replacing the entire cover, and to externally An object of the present invention is to obtain a TV camera device capable of preventing internal parts from being seen from the inside.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction content]

[0043]

As described above, in the TV camera device according to the first aspect of the invention, the composite type cover made of a plurality of materials having different light transmittances is opened so as to cover the image pickup section. It is rotatably provided on either the inside or outside of the cover, and the material of the part facing the opening can be changed by rotating this composite type cover, so it is easy to optimize without replacing the entire cover It is possible to take images according to various image pickup conditions, and it is possible to prevent internal parts from being seen from the outside.

Claims (5)

[Claims] 1. An image pickup section having a lens for performing a pan / tilt operation, and an image pickup section provided so as to cover the image pickup section, and an opening section provided at a portion corresponding to the tilt operation of the lens. And is provided rotatably on either the inside or the outside of the opening cover so as to cover the imaging unit and the opening cover that performs a pan operation together with the imaging unit, and has a light transmittance. And a composite cover in which the material of the portion facing the opening is changeable by rotation. 2. An image pickup section having a lens for performing a pan / tilt operation, and an image pickup section provided so as to cover the image pickup section, and an opening section provided at a portion corresponding to the tilt operation of the lens. And is provided rotatably on either the inside or the outside of the opening cover so as to cover the imaging unit and the opening cover that performs a pan operation together with the imaging unit, and has a light transmittance. It is composed by combining multiple dividing parts made of different materials,
A TV camera device, comprising: a composite cover in which a material of a portion facing the opening portion can be changed by rotating. 3. An image pickup section having a lens for performing a pan / tilt operation, and an image pickup section provided so as to cover the image pickup section, and an opening section provided at a portion corresponding to the tilt operation of the lens. And is provided rotatably on either the inside or the outside of the opening cover so as to cover the imaging unit and the opening cover that performs a pan operation together with the imaging unit, and has a light transmittance. A composite cover that is made up of a plurality of different materials and has data for selecting the above material, and that the material of the portion facing the opening can be changed by rotating. And a data reading device for reading the above data,
A TV camera device, comprising: a motor that is driven according to information from the data reading device to rotate the composite cover. 4. The data reading head, wherein the data has a data bit and a data detection bit provided corresponding to a position of the data of the data bit, and the data reading device reads the data bit. 4. The TV camera device according to claim 3, further comprising: a data detection head for detecting the data detection bit. 5. An image pickup section having a lens for performing a pan / tilt operation, and an opening section for accommodating the image pickup section and exposing the lens, are provided integrally with the image pickup section. A TV camera device, comprising: an open-type cover for performing a pan / tilt operation.