JPH0810987Y2 - Fixing device for image sensor in industrial TV camera - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for fixing an image pickup device in an industrial television camera for taking an image projected on a screen of a monitor television to a back surface of a front lid of a television camera body.

[0002]

2. Description of the Related Art A CCD image pickup device for a television camera is attached via a mask to the back of a base plate fixed to the back of the front lid of the camera body. The image receiving surface of this image pickup device is rectangular, and the image on the screen of the monitor television becomes an erect image by making the long side of the image receiving surface horizontal (horizontal). Generally, a television camera body has a rectangular shape when viewed from the front, a lens is attached to the center of the surface of the rectangular front lid, and a CCD image pickup device is attached to the back of the lens, that is, the back surface of the front lid as described above.

[0003]

In a conventional television camera, a long side of a rectangle of a main body is made vertical, and an image pickup device is attached to this with the long side of an image receiving surface being horizontal. There are two types of vertical type, which are orthogonal to each other, and horizontal type, in which the long side of the rectangle of the main body and the long side of the image receiving surface of the image sensor are both horizontal and parallel. The reason is that, for example, when a plurality of TV cameras are used as sensors in a factory production line, as shown in FIG. 4, the pitch P ₁ between the lenses when the vertical comrades are adjacent to each other and when the horizontal comrades are adjacent to each other. Pitch between lenses
_The reason for ₂ is that the vertical type P ₁ is narrower than the horizontal type P ₂ and the horizontal type P ₂ is wider than that, so that either one can be selected according to the use situation. Since it is not possible to reverse the image sensor of a vertical type (or horizontal type) by 90 ° to make a horizontal type (or vertical type), it has been necessary to use a plurality of vertical types adjacent to each other as sensors until then. However, if it becomes more appropriate to use multiple horizontal types adjacent to each other due to changes in the production line, etc., multiple horizontal types must be purchased.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, on the back surface of the front lid of the camera body that receives and supports the rear end of the lens barrel,
In an industrial TV camera in which an image pickup device and a printed wiring board are attached together, a mirror projecting to the outer periphery of a hollow disk-shaped base plate having the image pickup device and a circular wiring board concentrically attached to the back surface and the back side of the front lid of the main body. On the outer circumference of the barrel mounting cylinder wall,
There are positioning and tightening brackets with bolt holes that protrude radially in four directions. By tightening four pairs of brackets facing each other on both the base plate and the front lid with bolts, the lens and the image sensor can be positioned in the correct relationship. ,
Even if only the above-mentioned base plate is rotated one-quarter along its plate surface, it is characterized in that the brackets can be tightened to each other in the same manner.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, 10 is a main body of a television camera made of a metal cylinder having a rectangular cross section, 11 is a front lid for closing its front end, and both the front lid and the rear lid are made of aluminum die cast. The front lid is integrally formed with a cylindrical wall 12 that is concentric with the center and penetrates in the axial direction. The cylindrical wall 12 has a metal mount that forms a circular mount hole 13 on the inner circumference. The ring 14 is fitted and fixed from the front end,
The lens barrel (not shown) of the lens is mounted by screwing it into the female screw of the circular mount hole 13.

On the outer circumference of the cylindrical wall 12, four brackets (radial protrusions) 16 are integrally provided at equal intervals in the circumferential direction, and each bracket is a blind screw hole 17 opened rearward. Is equipped with. At the rear end of the cylindrical wall 12, an annular ridge 18 concentric with the circular mount hole 13 and having an inner diameter larger than the inner circumference of the cylindrical wall 12 is provided.
It is provided integrally along the outer circumference of. This annular ridge 18
Is composed of four arcuate ridges that are broken at the location of each radial protrusion 16.

Reference numeral 20 designates a base plate having a CCD image pickup device 22 attached to the back face thereof via a mask 21. As is well known, a printed wiring board 23 is attached to the back face of the image pickup device. The base plate 20 has a circular shape that fits on the inner circumference of the annular raised portion 18, and the base plate 20 is provided on the outer circumference thereof.
When fitted to the inner circumference of the
Four radial brackets 24 overlapping each bracket 16 are provided at equal intervals in the circumferential direction, and each bracket 24 has a screw insertion hole 25 communicating with the screw hole 17. The annular raised portion 18 is effective for improving the assembling accuracy, but can be omitted if the wiring of the holes 17 and 25 is correct.

Four brackets 1 provided on the cylindrical wall of the front lid
6, the base plate 20 is fitted to the inner circumference of the annular ridge 18 as described above, and the bracket 24 is attached to the front lid side bracket 1.
6 and the image pickup device 2 as shown by the arrow in FIG.
2 by 90 ° and the long side 26 'of the rectangular image receiving surface 26
Is orthogonal to the long side 20 'of the rectangle of the front lid (Fig. 1, Fig. 3
Solid line) or parallel (broken line in FIGS. 1 and 3). Therefore, the screw 27 is inserted into the screw insertion hole 25 of the bracket 24 of the base plate 20 and the front lid 1
The base plate 20 is fixed to the back of the front lid by tightening the screw holes 17 in the bracket 16 of No. 1 so that the long side of the image receiving surface of the image sensor is orthogonal to (or parallel to) the long side of the front lid. Manufacturer attaches the front lid to the front end of the main body 10,
Both horizontal TV cameras can be assembled using the same front lid and imaging device with a circular base plate. or,
The user who purchased this removes the front lid from the main body 10,
By removing the four screws 27 and rotating the mounting direction of the base plate 20 by 90 ° for reassembly, the television camera purchased as a vertical type (or a horizontal type) can be changed to a horizontal type (or a vertical type) for use.

Of course, for that purpose, the printed wiring board 23
Also, since the vertical type (or the horizontal type) is changed to the horizontal type (or the vertical type) by making the base plate 20 approximately the same size as the circular shape, even if the mounting direction of the base plate is rotated 90 °, there is no problem. It is necessary to make it fit inside 10 and the length of the electric wire connecting the wiring part of the printed wiring board and the control part in the main body 10 should be sufficiently long, and the front lid should be removed to remove it from the main body. Separate and flip over to allow easy access to the fixing screws 27 of the base plate. Further, although the method of fixing the front lid to the front end of the main body is arbitrary, it is preferable that the front lid can be attached and detached as easily as possible. In the illustrated embodiment, insertion holes 29 for tapping screws 28 are formed at both ends of one long side of the front lid, and the screws 28 are screwed into holes 30 at both ends of one long side of the main body, and at the same time, the front lid is A rearward-facing bracket 31 that contacts the inner surfaces of the two short sides of the main body is provided on the short side of the main body, and the front lid is fixed to the front surface of the main body by a screw 32 screwed into the bracket 31 through the hole of each short side of the main body. . Therefore, the four screws 28 and 32 are removed so that the front lid can be easily separated from the main body.

[0010]

[Effect of the Invention] As is clear from the above, according to the present invention,
The manufacturer can manufacture both vertical and horizontal TV cameras using the same front lid and imaging device with a circular base plate. Therefore, compared to the case where the vertical TV camera and the horizontal TV camera are assembled in separate parts, the number of parts used is smaller and the parts can be easily managed. Also, the user
While purchasing and using a vertical type (or horizontal type), you can change it to a horizontal type (or vertical type) as needed, so you can stop using the previous vertical type (or horizontal type) and use a new horizontal type (or vertical type) There is no waste of purchasing).

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts showing an embodiment of the present invention.

FIG. 2 is a vertical sectional side view in an assembled state.

3 is a cross-sectional view taken along the line AB of FIG.

FIG. 4 is an explanatory diagram showing a state where a plurality of television cameras are used as sensors.

[Explanation of symbols]

 10 Main body of TV camera 11 Front lid 11 'Long side 12 Cylindrical wall 13 Circular mount hole 15 Lens barrel 16 Bracket 17 Screw hole 18 Annular ridge 20 Base plate 21 Mask 22 Image sensor 24 Bracket 25 Screw insertion hole 26 Image receiving surface 26 ′ Long side 27 screws

Claims (1)

[Scope of utility model registration request] 1. An industrial television camera in which an image pickup device and a printed wiring board are attached together on a back surface of a front cover of a camera body that receives and supports a rear end of a lens barrel. On the outer circumference of the concentric hollow disk-shaped base plate and the outer circumference of the lens barrel mounting cylindrical wall that protrudes to the back side of the front cover of the main body, there are positioning brackets with bolt holes radially protruding in four directions. Yes, by tightening 4 sets of brackets facing each other on both the base plate and the front lid with bolts, the lens and the image pickup element are in the correct relationship position, and only the base plate is rotated a quarter turn along the plate surface. The fixing device for an image pickup element in an industrial television camera, which has a relational dimension with which each bracket can be tightened in the same manner.