JPH11298769A - Electronic camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized, easy to assemble electronic camera having a space on its electric board base fully utilized. SOLUTION: An opening 13 is formed overlapping with an area where a lens barrel 1 is projected on an electric base board 12 and nearby the mounting part of an image-pickup element 10. A flexible base board 7 extending from the base end side of the lens barrel 1 is provided extending from the front side to the back side of the electric base board 12 through the opening 13 and connected to a connector 14 provided on the back side of this electric base board 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic camera capable of effectively utilizing an electric board space on which an image pickup device is mounted.

[0002]

2. Description of the Related Art Conventionally, in an electronic camera, an electric component mounted in a lens barrel and performing operations such as zooming and focusing of the lens barrel is generally provided on an electric board on which an image pickup device is mounted via a flexible board or the like. The connection is made and its operation is controlled. This flexible board is connected by a connector or the like provided on the electric board. On this occasion,
The connector is usually arranged on the imaging element mounting surface of the electric board.

In recent years, in electronic cameras,
In order to improve the image quality, a multi-pixel image sensor tends to be used. Since it is difficult to reduce the pixel pitch of this type of imaging device, the imaging area of the entire device increases as the number of pixels increases. As a result, the diameter of the photographing lens and the like becomes large corresponding to the large-sized image sensor, and the diameter of the entire lens barrel must be increased. Further, as the size of the image sensor increases, the area occupied by the image sensor on the electric board increases.

On the other hand, the electric base of an electronic camera includes
It is necessary to mount a large number of electrical components and the like for performing various electrical processes on electrical signals of the image sensor and recording the electrical signals.

Therefore, as shown in FIG. 3, this type of electronic camera has a multi-pixel image pickup device 203, and when the image pickup device 203 is mounted, the electric board 204 becomes narrower.
Since a large number of electric components (not shown) must be mounted in the upper space, and the size of the lens barrel 202 with respect to the electric board 204 is large, the arrangement position of the connector 205 is limited. . In such a case, the connection work of the flexible board 201 to the connector 205 is difficult due to the electric components and the base end of the lens barrel 202 arranged at high density in a narrow space on the electric board 204. Becomes

Further, when the image sensor 203 has a large number of pixels and is large, it is difficult to secure a space for arranging the connector 205 on the electric board 204, and the electric board itself has to be enlarged. Disappears.

To cope with this, as shown in FIG. 4, a connector 205a is arranged on the back side, which is a dead space of the electric board 204, and the flexible board 201 is turned around from the outer edge of the electric board 204 to the back side. Connector 2 above
05a may be connected.

As described above, the connector 205a is connected to the electric board 2
04 on the back side of the electric board 204 to effectively use the dead space on the electric board 204, so that the multi-pixel
3 can be easily arranged on the electric board 204 without increasing the area of the electric board 204.

[0009]

However, the connector 20
When 5a is disposed on the back side of the electric board 204, the length of the flexible board becomes large, and there is a possibility that the flexible board is easily affected by noise or the like when controlling the operation of the lens barrel.

Further, since the flexible board 201 is wrapped around from the outer edge of the electric board 204 to the rear side, there is a possibility that the flexible board may be damaged when the electric board 204 is assembled to a housing of an electronic camera.

As described above, in the electronic camera using the multi-pixel image pickup device, when the connector is disposed on the front side of the electric board, the workability of assembling the flexible board to the connector is reduced, and the electric board 204 is not mounted. On the other hand, there is a risk of upsizing, etc., on the other hand, the connector is arranged on the back side of
When the flexible board is routed from the outer edge of the electric board to the back side, there is a possibility that the length of the flexible board becomes longer, and the workability of assembling the electric board to the housing is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronic camera which can effectively utilize a space on an electric board, can prevent an increase in size, and can be easily assembled. And

[0013]

In order to achieve the above object, an electronic camera according to a first aspect of the present invention is an electronic camera for recording an image by forming an image of a subject on an image sensor by a photographing optical system. A lens barrel that holds the optical system and incorporates the image sensor at the base end, an electric board that is disposed perpendicular to the optical axis of the photographing optical system, and mounts the image sensor, and is mounted in the lens barrel. A transmitting member for transmitting a signal of an electric component to the electric board; an opening provided in the electric board; and an opposite side of the image pickup element mounting surface of the electric board connecting the transmitting member to the electric board. And a connector, wherein the transmission member is connected to the connector through the opening.

According to a second aspect of the present invention, there is provided the electronic camera according to the first aspect, wherein the opening is formed in a region near the image pickup device mounting portion and in which the lens barrel is projected onto the electric board. The opening is provided at a position where at least a part of the opening is overlapped.

Further, an electronic camera according to a third aspect of the present invention includes:
In the electronic camera according to the first aspect, the transmission member is a flexible base.

Further, an electronic camera according to a fourth aspect of the present invention includes:
In the electronic camera according to the first aspect, the transmission member is a lead wire.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The drawings relate to an embodiment of the present invention. FIG. 1 is a front vertical sectional view of an electronic camera, and FIG.
FIG. 2 is a cross-sectional view of the electronic camera taken along line II-II.

Reference numeral 1 in the figure denotes a lens barrel of an electronic camera.
The lens barrel 1 is fixed in a housing 2 of the electronic camera, and is held inside the fixed lens barrel 3. The lens barrel 1 moves back and forth between a set-up position and a retracted position along an optical axis O. The movable movable lens barrel 4 is provided.

The movable lens barrel 4 holds a photographing optical system 5 composed of a plurality of lenses therein, and further includes a drive motor and the like for performing operations such as zooming and focusing of the photographing optical system 5. It is configured with an electric component 6.

One end of a flexible base 7 as a transmission member is connected to the electric component 6, and the other end of the flexible base 7 extends rearward from the base end of the fixed lens barrel 3. ing.

At the base end of the fixed lens barrel 3, a rectangular opening 3a is provided.
The image sensor 10 is fixed.

Here, as shown in FIG. 2, the image pickup device 10 is connected to the opening 3a via an elastic cushioning material 8.
Is fitted. On the back side of the image pickup device 10, a fixed plate 11 formed of an aluminum member or the like and also serving as a heat radiator is provided.
The fixed plate 11 is fixed to the base end of the fixed lens barrel 3 with a screw 9 or the like, so that the image pickup device 10 is prevented from falling off from the fixed lens barrel 3.

On the back side of the fixed plate 11, an electric board 1
2 are provided. The electric board 12 includes a large number of electric parts for performing various electric processings on the electric signals of the subject photoelectrically converted by the image pickup device 10 and recording the electric signals, and electric parts for controlling the driving of the movable lens barrel 4. Are fixed to the housing 2 by positioning pins or screws (not shown).

Here, a plurality of pins 10a protrude from the back surface of the image pickup device 10, and the tip ends of the pins 10a are electrically and mechanically connected to the electric board 12 by soldering or the like. I have.

Further, the electric board 12 is provided with an opening 13 for communicating the front side (the image sensor 10 mounting surface side) and the back side of the electric board 12. This opening 13
, The other end side of the flexible board 7 is penetrated, and goes around from the front side to the back side of the electric board 12.

Further, on the back side of the electric board 12,
A connector 14 for connecting the other end of the flexible board 7 to the electric board 12 is provided, and the other end of the flexible board 7 wrapped around the back of the electric board 12 through the opening 13. The side is connected to this connector 14.

Here, as shown in FIG. 1, at least one of the openings 13 is located in the area where the lens barrel 1 is projected on the electric board 12 in the vicinity of the mounting portion of the imaging element 10 as shown in FIG. The parts are provided at overlapping positions. The connector 14 is provided in the vicinity of the opening 13 and in the vicinity of the mounting portion of the imaging device 10.

When assembling such an electronic camera,
First, the image sensor 10 is fitted into the opening 3a of the fixed lens barrel 3 via the buffer material 8, and the fixed plate 11 is fixed to the base end of the fixed lens barrel 3 by screwing or the like. The imaging device 10 is held in the lens barrel 1. Next, the image sensor 1
The pins 10a protruding from 0 are electrically and mechanically connected to the electric board 12 by soldering or the like. At this time, the other end of the flexible base 7 extending from the base end of the fixed lens barrel 3 is inserted into the opening 13 from the front side of the electric base 12 and wrapped around the other end of the electric base 12. Let Next, the other end of the flexible board 7 is connected to the connector 14. Next, the lens barrel 1 and the electric board 12 are assembled to the housing 2 with positioning pins and screws.

As described above, according to such an embodiment, the connector 14 is provided on the back side of the electric board 12 which is a dead space for mounting electric components.
An opening 13 at least partially overlapped with an area where the lens barrel 1 is projected on the electric base 12 near the mounting portion of the imaging element 10 on the electric base 12 is provided.
The following operation and effect can be obtained by connecting to the connector 14 by wrapping around the back side of the electric board 12 through the opening 13.

First, on the front side of the electric board 12, the space for mounting the connector 14 can be effectively used as a space for mounting other electric parts.
A multi-pixel image sensor can be easily mounted without increasing the size of the image sensor.

Further, since the flexible board 7 can be connected to the connector 14 on the rear side of the electric board 12 having relatively few electric components and without obstacles such as the lens barrel 1, assembling workability is improved. I do.

Further, since the length of the flexible base 7 is not increased, the manufacturing cost of the flexible base 7 and the like can be reduced.

Further, when the electronic camera is operated, it is possible to reduce the influence of noise and the like due to the lengthening of the flexible board 7.

Further, since the flexible board 7 is not wrapped around from the outer edge of the electric board 12 to the back side, the flexible board 7 is not damaged when the electric board 12 is assembled to the housing 2 or the like. The operation reliability of the optical system 5, such as zooming and focusing, can be improved.

Further, in the electric board 12, the vicinity of the mounting portion of the image pickup device 10 is heated by heat radiation during the operation of the image pickup device 10, so that it is difficult to mount electric parts. By providing the opening 13 by utilizing the electric board 1 by providing the opening 13
2 can be prevented from being narrowed.

In this embodiment, the opening 13 is provided at a position where at least a part of the opening 13 is overlapped with a region where the lens barrel 1 is projected on the electric base 12. It goes without saying that the opening 13 may be provided so as to be entirely overlapped with the area projected on the electric board 12.

An electric part 6 for operating the movable lens barrel 4
The electrical connection between the board and the electric board 12 is not limited to the flexible board 7, and for example, a lead wire may be used.

[0038]

As described above, according to the present invention,
An electronic camera with good assemblability can be provided while effectively utilizing the space on the electric board to prevent an increase in size.

[Brief description of the drawings]

FIG. 1 is a front vertical sectional view of an electronic camera.

FIG. 2 is a cross-sectional view of the electronic camera taken along the line II-II in FIG.

FIG. 3 is a vertical sectional view on the right side of a conventional electronic camera.

FIG. 4 is a vertical sectional view on the right side of a conventional electronic camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Barrel 7 ... Flexible board (transmission means) 10 ... Image sensor 12 ... Electric board 13 ... Opening 14 ... Connector

Claims (4)

[Claims] 1. An electronic camera for recording an image by forming an image of a subject on an image sensor by a photographing optical system, comprising: a lens barrel holding the photographing optical system and incorporating the image sensor at a base end; An electric board that is arranged perpendicular to the optical axis of the photographing optical system and mounts the image sensor, a transmission member that transmits a signal of an electric component mounted in a lens barrel to the electric board, and that is provided on the electric board. An opening, and a connector provided on the opposite side of the imaging element mounting surface of the electric board, for connecting the transmitting member to the electric board, wherein the transmitting member penetrates the opening and is connected to the connector. An electronic camera characterized in that: 2. The method according to claim 1, wherein the opening is provided in a vicinity of the image pickup device mounting portion, at a position where at least a part of the opening overlaps a region where the lens barrel is projected on the electric board. The electronic camera according to claim 1, wherein 3. The electronic camera according to claim 1, wherein the transmission member is a flexible board. 4. The electronic camera according to claim 1, wherein said transmission member is a lead wire.