JPH07154655A - Video camera - Google Patents

Abstract

PURPOSE:To reduce the manufacturing cost. CONSTITUTION:An end plate 49 having a 2nd lower camera mount face 52 perpendicular to a lens barrel mount face 8b is provided integrally on a front plate 8. Thus, when a lens barrel 2 is fitted to the front plate 8, since an optical axis of a lens of the lens barrel 2 is orthogonal to the lens barrel mount face 8b perpendicular to the 2nd lower camera mount face 52 of the end plate 49, it is not required to enhance the mount accuracy of the front plate 8 to the camera case at the time of manufacture of the camera different from a conventional camera and the processing of the camera case and the front plate 8 in the manufacture of the camera is simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera suitable for use in, for example, factory automation equipment (FA equipment).

[0002]

2. Description of the Related Art In recent years, a video camera having a CCD (charge transfer device) is often used as an image pickup device because it has excellent characteristics and is suitable for mass production.

Conventionally, this type of video camera has a CCD
A camera housing with a built-in camera and a camera mounting surface, a screw hole that is attached to the front end of the camera housing and opens in the optical axis direction (front-back direction), and a lens barrel attachment that is exposed at the opening periphery of the screw hole A front panel having a surface and a lens barrel having an opening end face that is screwed into a screw hole of the front panel and is in contact with the lens barrel mounting surface are employed.

To use the video camera having such a structure, the camera mounting surface of the camera housing is mounted to a camera mounted component such as an FA device.

In this case, it is necessary to set the position of the lens optical axis of the lens barrel with respect to the parts to be attached to the camera with high accuracy.

Therefore, the video camera is manufactured so that the lens barrel mounting surface and the camera mounting surface are perpendicular to each other when the front panel is mounted on the camera housing.

That is, unless the lens barrel mounting surface and the camera mounting surface are perpendicular to each other, the lens optical axis position of the lens barrel shifts from a predetermined position when the camera housing is mounted on the camera mounting component, and the lens light is displaced. This is because the positional accuracy of the axis will be reduced.

[0008]

However, in the conventional video camera, since the lens barrel mounting surface and the camera mounting surface are formed on the front panel and the camera housing, respectively, the camera mounting surface and the lens are manufactured at the time of manufacturing the camera. It was necessary to increase not only the processing accuracy of the surface to be attached to the cylinder but also the accuracy of attaching the front panel to the camera housing.

As a result, there has been a problem that the processing work of the camera housing and the front panel at the time of manufacturing the camera is complicated and the manufacturing cost is increased.

The present invention has been made in view of the above circumstances, and provides a video camera capable of easily performing a working operation at the time of manufacturing a camera, thereby reducing the manufacturing cost. is there.

[0011]

In the video camera according to the present invention, the front plate is integrally provided with an end plate having a camera mounting surface perpendicular to the lens barrel mounting surface.

[0012]

In the present invention, when the lens barrel is attached to the front plate, the lens optical axis of the lens barrel is orthogonal to the lens barrel mounting surface perpendicular to the camera mounting surface of the end plate.

[0013]

Embodiments of the present invention will be described in detail below with reference to embodiments shown in the drawings.

FIG. 1 is a sectional view showing a front plate (front panel) of a video camera according to the present invention, FIG. 2 is a sectional view showing a heat dissipation structure of an image pickup device (CCD) of the video camera according to the present invention, and FIG. FIGS. 4A and 4B are a longitudinal sectional view and a lateral sectional view showing the camera body of the video camera according to the present invention, FIG. 4 is an exploded perspective view showing the whole video camera according to the present invention, and FIG. FIG. 6A and FIG. 6B are perspective views showing the appearance, FIG. 6A and FIG. 6B are plan views and front views showing the entire video camera of the present invention, and FIG.
And (B) are a right side view and a bottom view showing the entire video camera according to the present invention.

In FIG. 1, reference numeral M denotes a high-definition video camera, which has a main body 1 having a substantially rectangular parallelepiped appearance, and a plurality of lenses 2a detachably provided on the front surface of the main body 1. And the lens barrel 2.

"Main Body of Video Camera" This main body 1 has a camera housing 7 having two sets of upper, lower, left, and right wall plates 3 to 6, which face each other, and is open in the front-rear direction, and the front of the camera housing 7. A front plate 8 having a screw hole 8a for mounting a lens as a through hole that is attached to the opening and opens in the optical axis direction, and is attached to the rear opening of the camera housing 7 provided behind the front plate 8. And a rear face plate 10 having a through hole 9 for external connection that is open on both front and back sides, and is entirely formed by aluminum die casting or zinc die casting.

[Case] The camera case 7 contains a CCD 11 as an image pickup device for receiving an optical image taken by the lens 2a and a plurality of printed circuit boards 12 connected to the CCD 11.

The upper wall plate 3 of the wall plates 3 to 6 of the camera housing 7 vertically penetrates a stepped hole 13 for mounting a metal fitting, which is opened on both front and back sides, and a stepped portion 13a of the stepped hole 13. It is formed by an upper panel having a substantially U-shaped cross-section when it has a screw hole 13b into which a mounting screw a is screwed.

The stepped hole 1 is formed at the front edge of the upper wall plate 3.
A flat first upper camera mounting surface 1 including the outer peripheral edge of 3
4 is formed, and a flat second upper camera mounting surface 15 located on the same surface as the first upper camera mounting surface 14 is formed at the rear edge.

A radiating fin 16 is provided between the upper camera mounting surfaces 14 and 15 of the upper wall plate 3 by forming a concavo-convex portion extending in the front-rear direction and parallel to the left-right direction. .

The front and rear edges of the upper wall plate 3 are arranged in parallel with each other at a predetermined distance in the left-right direction and are respectively arranged on the first camera mounting surface 14 and the second camera mounting surface 15. Screw holes 17 and 18 for camera mounting to open
Is provided.

Further, on the back sides of both side portions of the upper wall plate 2,
It has a panel mounting screw hole 19a which is opened in the front-rear direction and into which the mounting screws b and c are screwed, and a side plate mounting screw hole 19b which is opened in the left-right direction and into which the mounting screw d is screwed and extends in the front-rear direction. The mounting portion 19 is integrally provided.

On the other hand, the lower wall plate 4 of the camera housing 7 has a frame 20 facing a part of the printed boards 12a of the printed boards 12 and a notch 2 located in front of the frame 20.
1 is formed by a main brazing panel having a substantially U-shaped cross section.

At the rear end edge of the lower wall plate 4, there are screw holes 22 for camera mounting which are located at a predetermined interval in the left-right direction and open downward, and extend in the left-right direction including the peripheral edges of these screw holes 22. A flat second lower camera mounting surface 23 is formed.

The radiating fins 24 are formed on the front portion of the second lower camera mounting surface 23 of the lower wall plate 4 by forming an uneven portion extending in the front-rear direction and juxtaposed in the left-right direction.
Is provided.

The lower wall plate 4 has the cutout 21.
Is formed with a stepped surface 4a having a U-shape in a plan view extending along the peripheral edge of the inner opening.

Further, on both sides of the lower wall plate 4, mounting screws e, which are opened in the axial direction of the screw holes 19a, 19b, are provided.
Mounting having screw holes 25a, 25b into which f is screwed, a screw hole 25c for holder mounting in which the mounting screw g is screwed, and a positioning pin 25d protruding in the same direction as the opening direction of the screw hole 25c. The part 25 is integrally provided.

Next, the side wall plates 5 and 6 of the wall plates 3 to 6 of the camera housing 7 will be described.
Are side plates 26 and 27 with which the upper edge and the lower edge contact the both mounting portions 19 and 25, respectively, and base pieces 28a and 29a having rear surfaces facing the outer side surfaces of these side plates 26 and 27, and these base pieces. 28a, 29a, and a side panel composed of two side pieces 28b, 29b and heat radiation plates 28, 29.

The side plates 26, 27 and the heat dissipation plate 28,
Since 29 are configured substantially the same, only one of them (the side plate 26 and the heat radiating plate 28) will be described. In the side plate 26, screw insertion holes 26a, which are open on both front and back surfaces (both inner and outer surfaces),
26b and a positioning hole 26c are provided.

Further, the heat dissipation plate 28 is provided with two opening portions 31 and 32 which are adjacent to each other with a partition portion 30 therebetween, straddling the base piece 28a and the side piece 28b.

On the heat dissipation plate 28, a plurality of columns 33, 34 projecting from the rear surface of the base piece 28a and arranged in parallel along the upper edge and the lower edge, and these columns 33, 34.
There are provided two heat transfer blocks 35 (only one is shown) that project in the same direction as the projecting direction of and are arranged in parallel in the front-rear direction with a predetermined interval.

The columns 33 and 34 of the heat dissipation plate 28 are flat tip surfaces 33a and 34 which are in contact with the outer surface of the side plate 26.
It is formed by a cylinder having a.

Of these, the support screw 33 has a screw insertion hole 3 through which the mounting screw d is continuously inserted into the screw insertion hole 26b.
3b is provided.

Further, a mounting screw h is attached to the column 34 (a part).
Is a screw hole 34 through which the screw insertion hole 26a is inserted and screwed.
b is provided.

On the other hand, the heat transfer block 35 of the heat sink 28
Like the columns 33 and 34, the two convex portions 36 that have a flat tip surface 36a that faces the outer surface of the side plate 26 and that are parallel to each other at a predetermined interval in the vertical direction, and between these convex portions 36. It is formed by the reinforcing ribs 37 interposed between.

A protrusion 38 facing the positioning hole 26c is integrally provided on the tip surface 36a of the lower protrusion 36 of the protrusions 36 of the heat transfer block 35.

[Front Plate] This front plate 8 has the screw holes 8
A substantially rectangular box with a bottom that has a flat lens barrel mounting surface 8b exposed on the outer peripheral edge of the inner and outer openings of a and screw insertion holes 8c, 8d through which the mounting screws b, e are inserted It is formed by a front panel.

On the rear surface of the front plate 8, two block bodies 39, 4 are arranged in parallel with each other in the left-right direction at a predetermined interval and project in the vicinity of the inner opening of the screw hole 8a.
0 are integrally provided, and both block bodies 39,
First positioning pins 41 and 42, which are arranged in parallel with each other in the vertical direction at a predetermined interval in the vertical direction and project rearward, and screw holes into which mounting screws i are screwed and are located between the first positioning pins 41 and 42. 43 and 44 are provided.

Further, on the back surface of the front plate 8, there is provided a second positioning pin 45 projecting rearward, and the both block bodies 3 are provided.
Of the reference numerals 9 and 40, a post 46 connected to the upper end of the left block body 39 and a second positioning pin 47 protruding rearward like the second positioning pin 45 are provided and are located below the right block body 40. The support column 48 is integrally provided.

At the lower edge of the opening edge of the front plate 8, an end plate 49 having a stepped surface 49a facing the stepped surface 4a and facing the notch 21 is integrally provided. There is.

The end plate 49 has a stepped hole 50 for mounting a metal fitting, which is open on both front and back surfaces, and a stepped portion 50a of the stepped hole 50.
Is formed by a sub-row panel having a screw hole 51 penetrating in the vertical direction at the rear end thereof and into which a mounting screw j is screwed.

On the surface of the end plate 49, the stepped hole 50 is formed.
A second lower camera mounting surface 52 including the outer opening peripheral edge and being perpendicular to the lens mounting surface 8b is formed.

Further, the end plate 49 is provided with a positioning hole 53 opening to the second lower camera mounting surface 52 and a camera mounting screw hole 54 opening downward.

[Rear Surface Plate] The rear surface plate 10 is formed by a substantially rectangular box-shaped rear panel having a screw insertion hole 10a through which the mounting screw c is inserted and opening forward.

"Lens barrel of video camera" This lens barrel 2 includes two front and rear cylindrical bodies 2 each having a different diameter.
b, 2c.

The lens 2a is built in the front cylindrical body 2b of the two cylindrical bodies 2b, 2c of the lens barrel 2, and the screw hole 8a is exposed to the rear cylindrical body 2c.
A screw portion 55 that is screwed inside is provided.

Reference numeral 56 designates a light transmission window 56a which is open in the front-rear direction.
And a CCD holder having a substantially rectangular shape in plan view, which has a ring 56b projecting from the front opening edge of the light transmitting window 56a. The CCD holder is provided inside the camera housing 7 and fixed to the tip surfaces of the block bodies 39 and 40. And is entirely formed by aluminum die casting or zinc die casting.

First and second pin holes 57, 58 and second pin holes 59, 60 facing the first positioning pins 41, 42 and the second positioning pins 45, 47 are provided on the left and right edges of the CCD holder 56. A screw insertion hole 61 through which the mounting screw i is inserted is provided between the two first pin holes 57 and 58.

Further, on the rear end face of the CCD holder 56, two CCD positioning pins 62 juxtaposed in parallel with a predetermined interval in the left-right direction and projecting rearward, and these respective CCs.
A screw hole 63 (only one of which is shown) is provided above the D positioning pin 62 and into which a mounting screw k inserted through the package 11a of the CCD 11 is screwed.

Reference numeral 64 denotes a heat transfer plate for heat radiation, which is fixed to the CCD holder 56 via the CCD 11.
A base piece 6 which entirely faces the back surface of the package 11a.
4a and the side piece 64 which is formed by bending on both side edges of the base piece 64a and faces the back surfaces of the side plates 26, 27.
It is formed of an aluminum plate having a U-shaped cross section, which is formed of b and 64c.

In the base piece 64a of the heat transfer plate 64, there are two screw insertion holes 65 (only one is shown) which are located at a predetermined interval in the left-right direction and through which the mounting screws k are inserted, and these screw insertion holes 65. Two pin holes 66 (only one of which is shown) which is located below and faces the CCD positioning pin 62 are provided.

The base piece 64a of the heat transfer plate 64 is provided with a through window 67 that opens in the axial direction of the screw insertion hole 61 and the screw holes 43 and 44.

On the other hand, the side pieces 64b of the heat transfer plate 64,
The 64c is provided with rubber positioning pins 68 and 69 protruding toward the back surfaces of the side plates 26 and 27.

Reference numeral 70 denotes a bottomed rectangular box-shaped substrate holder having holder mounting pieces 70a and 70b on both left and right edges thereof, and is fitted into the upper opening of the frame portion 20 and the mounting screw f is attached to the mounting portion 25. The printed circuit board 12b of the printed circuit board 12 is held by the printed circuit board 12b.

Holder holder piece 7 of the substrate holder 70
0a and 70b, a screw insertion hole 71 through which the mounting screw g is inserted and a pin hole 72 through which the positioning pin 25d faces.
Is provided.

Reference numeral 73 denotes a pin hole 73a exposed by the positioning pin 62 and a screw insertion hole 73 through which the mounting screw k is inserted.
b is a first heat conductive rubber having a rectangular shape in a plan view, which is interposed between the base piece 64a of the heat transfer plate 64 and the back surface of the package 11a, and is entirely made of silicon containing a conductive material ( Si) made of rubber.

Reference numeral 74 denotes a second heat conductive rubber having a rectangular shape in plan view, which has a pin hole 74a exposed by the rubber positioning pins 68 and 69 and rectangular holes 74b located on both sides of the pin hole 74a. It is made of a reinforced conductive sheet containing glass fibers, and is interposed between each side piece 64b, 64c of the heat transfer plate 64 and the back surface of each side plate 26, 27.

75 is a square shape in a plan view (rectangular shape in a plan view)
The third heat conductive rubber of No. 3, which is made of conductive silicon rubber and a reinforcing conductive sheet containing glass fiber, similar to the second heat conductive rubber 74, and includes the integrated circuit element E on the printed circuit board 12b and the side plates 26. , 27 on the back surface (the back surface of the upper wall plate 3) and between the holder mounting pieces 70a, 70b of the substrate holders 70 and the upper surfaces of the mounting portions 25.

Reference numeral 76 denotes a fourth heat conductive rubber having a substantially square shape in plan view, which is formed on the outer side surfaces of the side plates 26 and 27 and the convex portions 36.
The first heat-conductive rubber 73 and the first heat-conductive rubber 73 are formed of silicon rubber mixed with a conductive material.

The fourth heat conductive rubber 76 is provided with an opening 76a through which the protrusion 38 is inserted.

Reference numeral 77 is a first metal fitting for mounting a camera, which has a base portion 78 having a screw hole 78a opening upward and through which the stepped hole 13 is inserted, and a mounting portion integrally provided at an upper end portion of the base portion 78. It is composed of a flange portion 79 having three screw insertion holes 79a through which the screw a is inserted, and is fixed on the step portion 13a.

Reference numeral 80 denotes a second metal fitting for mounting the camera, which has a base 81 having a screw hole 81a opening upward and through which the stepped hole 50 is inserted, and a base 81 which is integrally provided at the lower end of the base 81. The flange portion 82 has three screw insertion holes 82a through which the screws j are inserted, and is fixed on the step portion 50a.

In the video camera thus constructed, when the lens barrel 2 is attached to the front plate 8, the lens optical axis of the lens barrel 2 is perpendicular to the second lower camera mounting surface 52 of the end plate 49. It will be orthogonal to the lens barrel mounting surface 8b.

Therefore, in the present embodiment, it is not necessary to increase the mounting accuracy of the front plate 8 with respect to the camera housing 7 at the time of manufacturing the camera as in the conventional case, so that the camera housing 7 and the front plate 8 at the time of manufacturing the camera can be made. Processing work can be performed easily.

Further, in the present embodiment, C in the main body 1
The heat generated from the CD 11 is transmitted to the heat transfer plate 64 via the first heat conductive rubber 73, and is transmitted from the heat transfer plate 64 to the side plates 26, 27 via the second heat conductive rubber 74. Emitted from 27 into the atmosphere.

In this case, the CCD 11 and the side plates 26, 2 are separated by the first heat conductive rubber 73 and the second heat conductive rubber 74.
Since the heat path resistance between 7 becomes small, C
It is possible to prevent the performance deterioration of the CD 11.

Therefore, it is not necessary to provide a ventilation hole in the camera housing as a heat dissipation structure or to set the outer dimensions of the housing to a large size as in the conventional case.

Further, in the present embodiment, the heat generated from the integrated circuit element E on both the left and right printed circuit boards 12b is transferred to the side plates 26 and 27 through the third heat conductive rubber 75,
The heat transmitted from the side plates 26 and 27 to the heat dissipation plates 28 and 29 through the fourth heat conductive rubber 76 and the heat transfer block 35, and the heat generated from the integrated circuit element E on the upper printed board 12b has the third heat conductivity. It is transmitted to the radiation fins 16 via the rubber 75 and the upper wall plate 3, and these radiation plates 28, 29
Then, the heat is dissipated from the radiation fins 16 into the atmosphere.

On the other hand, the heat generated from the printed board 12 is transmitted to the board holder 70, and the third heat conductive rubber 75 is transferred from the holder mounting pieces 70a and 70b of the board holder 70.
Also, it is transmitted to the heat radiation fins 24 via the lower wall plate 4, and is diffused into the atmosphere from the heat radiation fins 24.

In this case, since the surface area of the camera housing 7 is increased by the heat dissipation fins 16 and 24 and the heat dissipation plates 28 and 29, the heat generated from the electronic components in the main body 2 should be dissipated to the four sides of the camera housing 7. Therefore, it is possible to prevent the occurrence of failure and performance deterioration of electronic components due to temperature rise.

Furthermore, in this embodiment, the heat dissipation plate 2
The fact that 8 and 29 are attached to the side plates 26 and 27 via the columns 33 and 34 means that the columns 33 and 34 are provided between the left and right side plates 26 and 27 and the heat radiation plates 28 and 29 in the front-back (horizontal) direction and An air path that opens in the vertical (vertical) direction is formed.

Although the transmission plate 64 is formed of an aluminum plate in the present embodiment, the present invention is not limited to this, and a metal plate such as copper may be used. In this case, the heat radiation effect can be further enhanced.

Further, the material of the heat conductive rubber in the present invention is not particularly limited to the above-mentioned embodiment, and each heat conductive rubber is in close contact with the heat transfer plate 64, the side plates 26, 27, etc. to have a heat path resistance. It should be something that makes it smaller.

Besides, in the present embodiment, an example in which the present invention is applied to an FA device has been shown, but the present invention is not limited to this, and can be applied to, for example, an image processing device as in the embodiment.

[0075]

As described above, according to the present invention, since the end plate having the camera mounting surface perpendicular to the lens barrel mounting surface is integrally provided on the front plate, the lens barrel is mounted on the front plate. Then, the lens optical axis of the lens barrel is orthogonal to the lens barrel mounted surface which is perpendicular to the camera mounting surface of the end plate.

Therefore, it is not necessary to increase the mounting accuracy of the front plate with respect to the camera housing when manufacturing the camera as in the conventional case, so that the processing work of the camera housing and the front plate during manufacturing the camera can be easily performed. It is possible to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a sectional view showing a front plate of a video camera according to the present invention.

FIG. 2 is a sectional view showing a heat dissipation structure of the image pickup device of the video camera according to the present invention.

3A and 3B are a longitudinal sectional view and a lateral sectional view showing a camera body of a video camera according to the present invention.

FIG. 4 is an exploded perspective view showing the entire video camera of the present invention.

FIG. 5 is a perspective view showing the appearance of a video camera according to the present invention.

6A and 6B are a plan view and a front view showing the entire video camera according to the present invention.

7A and 7B are a right side view and a bottom view showing the entire video camera according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Lens barrel 7 ... Camera housing 8 ... Front plate 8a ... Screw hole 8b ... Lens barrel mounting surface 11 ... CCD 49 ... End plate 52 ... Second lower camera mounting surface M ... Video camera

Claims (1)

[Claims] 1. A camera housing having a built-in image sensor and opening to the front, a through-hole mounted in the front opening of the camera housing and opening in the optical axis direction, and a lens barrel exposed at the periphery of the opening of the through-hole. A video camera, comprising: a front plate having a mounting surface, and an end plate having a camera mounting surface perpendicular to the lens barrel mounting surface provided integrally with the front plate.