JP2006047449A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera whose size can be reduced using a multilayer flexible circuit board and whose layout ensures efficient assemblability. <P>SOLUTION: In a multilayer flexible substrate 4, flexible parts 4e, 4f, 4g, and 4h are bent at 90°, and each face of a battery box 2 is disposed so as to be covered with rigid parts 4a, 4b, 4c, and 4d or the flexible parts 4e, 4f, 4g, and 4h. A positioning boss and screw hole as a pair are disposed on the side of the battery box 2 corresponding to the position of the multilayer flexible substrate 4. The boss is inserted into the positioning hole on the multilayer flexible substrate 4 and thereby the multilayer flexible substrate 4 is positioned. Thereafter, the multilayer flexible substrate 4 is fixed with a screw. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a circuit board layout for miniaturizing a camera.

  Currently, as the size of the camera is reduced, the space occupied by the circuit board inside the camera is increasing. The size, performance, and mass productivity of the camera change depending on the layout of the circuit board. For this reason, the main circuit board on which the control unit is mounted is arranged perpendicular to the peripheral circuit board along the battery (for example, see Patent Document 1). A rigid board and a flexible wiring board are used as a circuit board in the camera, and a connector is used to electrically connect the boards.

Alternatively, effective use of a narrow space inside the camera has been attempted using a multilayer flexible wiring board. Multilayer flexible wiring boards are
It has been adopted as a technology for connecting connectorless printed wiring boards in special fields such as space and military. Furthermore, with the recent miniaturization of electronic devices, connectorless connection methods are required for digital cameras, mobile phones, and notebook PCs, and the market has grown. A conventional use example is shown in FIG. 21 is a mounting component, 22 is a multilayer flexible wiring board, and 23 is an insulating plate.

JP 2002-365706 A JP-A-10-155100 JP-A-5-335714

  However, in a configuration using a rigid substrate and a flexible wiring board, connection by a connector is required. In the main board, the connector occupies many parts on the board for connection to each peripheral board and flexible wiring board, which hinders downsizing. In addition, there may be a decrease in electrical reliability due to the use of a connector and an increase in the number of assembly steps.

  Even when a multilayer flexible wiring board is used, it is necessary to use an insulating plate so that the mounted components on both substrates facing each other do not short-circuit, and a method using no insulating plate has been proposed.

  However, in the above method, it is necessary to lengthen the flexible wiring board, which increases costs.

  Accordingly, an object of the present invention is to propose a layout that can be miniaturized using a multilayer flexible wiring board and has good assemblability.

  In order to achieve the above-described object, the invention described in claim 1 is a camera having a multilayer flexible wiring board composed of a rigid part and a flexible part and a battery box for housing a battery, and a plurality of battery boxes accommodated in the camera casing. Is arranged so as to be surrounded by a multilayer flexible wiring board.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, rigid portions of the multilayer flexible wiring board are connected by a plurality of flexible portions.

  According to a third aspect of the present invention, in the second aspect of the invention, the plurality of flexible portions are arranged on different surfaces of the battery box according to the first aspect.

  The invention according to claim 4 is the invention according to claim 1, characterized in that the CPU circuit and the signal processing circuit section are arranged on the largest surface of the battery box in the multilayer flexible wiring board.

  According to a fifth aspect of the present invention, in the first aspect of the present invention, the power supply circuit section is arranged in the power terminal installation section of the battery box in the multilayer flexible wiring board.

  According to a sixth aspect of the invention, in the first aspect of the invention, the camera includes a movable portion and a main body portion, and the movable portion and the main body portion are connected by the flexible portion.

  The invention according to claim 7 is the invention according to claim 6, wherein the movable portion is a liquid crystal display.

  The invention according to claim 8 is the invention according to claim 6, wherein the movable portion is a battery lid.

  The invention according to claim 9 is the invention according to claim 6, wherein the movable portion is a pop-up strobe.

  A tenth aspect of the present invention is characterized in that, in the first aspect of the present invention, a recording medium storage portion is mounted on the multilayer flexible wiring board.

  The invention described in claim 11 is a camera having a multilayer flexible wiring board composed of a rigid part and a flexible part, a recording medium storage box for storing a recording medium, and a battery box for storing a battery. A plurality of media storage boxes are arranged so as to be surrounded by a multilayer flexible wiring board.

  According to a twelfth aspect of the present invention, in the invention of the eleventh aspect, the rigid portions of the multilayer flexible wiring board are connected by a plurality of flexible portions.

  According to a thirteenth aspect of the invention, in the twelfth aspect of the invention, the plurality of flexible portions are arranged on different surfaces of the recording medium storage box according to the first aspect.

  The invention described in claim 14 is characterized in that, in the invention described in claim 11, the CPU circuit and the signal processing circuit section are arranged on the largest surface of the battery box in the multilayer flexible wiring board.

  A fifteenth aspect of the invention is characterized in that, in the invention of the eleventh aspect, in the multilayer flexible wiring board, the power supply circuit portion is arranged in the power supply terminal installation portion of the battery box. .

  According to a sixteenth aspect of the present invention, in the invention according to the eleventh aspect, the camera includes a movable portion and a main body portion, and the movable portion and the main body portion are connected by the flexible portion.

  The invention according to claim 17 is the invention according to claim 16, wherein the movable portion is a liquid crystal display.

  The invention described in claim 18 is the invention described in claim 16, characterized in that the movable part is a battery lid.

  The invention according to claim 19 is the invention according to claim 16, wherein the movable portion is a pop-up strobe.

  According to a twentieth aspect of the invention, in the invention of the eleventh aspect, a power supply terminal is mounted on the multilayer flexible wiring board.

  According to the present invention, the number of components is reduced by using a multilayer flexible wiring board so as to surround a plurality of batteries, the space in the camera housing can be effectively used, and the size can be reduced. Further, by integrally configuring the connection parts of the plurality of component mounting parts with the multilayer flexible wiring board, a printed board with high electrical reliability can be realized, and assembly work can be facilitated.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<Embodiment 1>
Although this embodiment mode is described as applied to a digital camera, a camera having a battery box and a circuit board such as a video camera may be used.

  FIG. 1 is a perspective view of a camera according to the present invention. As shown in FIG. 1, 1 is a camera body, 2 is a battery box, 4 is a multilayer flexible board, 6 is a strobe light emitting unit, 7 is an optical viewfinder window, 8 is a shutter button, 9 is a camera power button, and 10 is a camera power button. It is a lens barrel.

  2 is a cross-sectional view taken along line AA in FIG.

  In FIG. 2, 3 is a battery cover, 5 is a recording medium storage box, 11 is a shutter switch, 13 is a power switch, 19 is a secondary battery, and 14 is a power terminal. Other components are omitted.

  FIG. 3 shows a rear perspective view. In FIG. 3, 15 is a CCD, 16 is a CCD holder, 17 is a CCD flexible substrate, and 18 is a flexible connector.

  FIG. 4 is a development view of the multilayer flexible substrate (the mounting parts are omitted here).

  The multilayer flexible substrate 4 includes a rigid portion on which electronic components are mounted at a high density and a flexible portion that can be bent. Here, the rigid portions 4a, 4b, 4c, and 4d are component mounting portions for mounting components at high density. 4e, 4f, 4g, and 4h are connection portions for electrically connecting the mounting portions of the respective components. However, components that do not need to be mounted at a relatively high density such as the release switch 11 and the power switch 12 are mounted. be able to. Reference numerals 4e, 4f, 4g, and 4h are formed of one wiring layer. This multilayer flexible substrate is manufactured by peeling off unnecessary layers so that the portions 4e, 4f, 4g, and 4h become one wiring layer in the process of manufacturing the multilayer flexible substrate.

  In this embodiment, the rigid part is composed of eight wiring layers and the flexible part is composed of one wiring layer. However, the rigid part may be composed of three or more wiring layers depending on the mounting scale and specifications constituting the substrate. Can be configured freely. Further, if the flexible part is also a wiring layer having two or less layers, the flexible part can be electrically connected to the rigid part while maintaining flexibility. 4e, 4f, 4g, and 4h can be divided into two layers to pass many signals. However, when the substrate is placed, it is bent at 90 degrees, and the copper foil inside the substrate is bent. There is a risk of disconnection. Therefore, it is desirable to use only one layer.

  The battery box 2 is disposed in the camera body, and is put in and out at a battery lid 3 provided on the bottom surface of the camera. The recording media storage box 5 is mounted on the multilayer flexible substrate 4.

  A release switch 11 and a power switch 12 are mounted on the board portion 4f corresponding to the upper surface of the battery box.

  The multilayer flexible substrate 4 is bent at 90 degrees by the flexible portions 4e, 4f, 4g, and 4h, and each surface of the battery box 2 is rigid portions 4a, 4b, 4c, and 4d or the flexible portions 4e, 4f, 4g, and 4h. Arranged to cover. A pair of positioning bosses and screw holes are provided on the battery box 2 side corresponding to the arrangement of the multilayer flexible substrate 4, and after positioning the bosses in the positioning holes on the multilayer flexible substrate 4, It is fixed with screws.

  Peripheral circuit boards 4a, 4b, 4c, and 4d are connected via flexible parts 4e, 4f, 4g, and 4h around a main board part 4c on which a CPU for controlling the camera is mounted. The CPU is mounted on the same main board portion 4c in order to exchange many signals with ICs such as an imaging engine, TG, and CDSAD. The main board portion 4c is arranged along a surface that maximizes the area of the battery box in order to ensure a large mounting area.

  The CCD 15 is soldered to the CCD flexible substrate 17, and after being bonded and fixed to the CCD holder 16, it is screwed to the lens barrel 10. The CCD flexible substrate 17 is a substrate different from the multilayer flexible substrate 4, and is electrically connected via the flexible connector 18. A signal from the CCD 15 is sent via the CCD flexible substrate 17 to the main substrate portion 4c on which TG and CDSAD are mounted. Since the CCD 15 is installed on the back side of the lens barrel 10, it is desirable that the main board portion 4c of the multilayer flexible wiring board be arranged on the back side of the camera. As a result, the distance from the CCD 15 to the main substrate portion 4c can be shortened, so that external noises and signal attenuation can be minimized.

  The power terminal 14 is installed on the camera front side of the battery box 2. The power supply circuit portion in the multilayer flexible substrate 4 is disposed in the battery box in the vicinity of the surface on which the battery terminals are installed. In the present embodiment, 4a of the multilayer flexible substrate is the power supply circuit section. As a result, the length of the portion through which a large current flows is shortened, and the power loss can be suppressed.

  The recording media storage box 5 is mounted on the battery box side of the rigid portion 4c. Then, the rigid portion on which the recording medium storage box 5 is mounted is positioned using the boss portion of the battery box 2 and fixed with screws, so that the recording medium storage box 5 is in contact with the battery box 2. This eliminates the need for fixing the media storage box 5 and reduces the number of assembly steps. The battery lid 3 also serves as a lid for the recording media storage box 5.

  FIG. 5 is a front perspective view of the camera showing the inside of the housing.

  A strobe substrate portion is disposed on the rigid portion 4 b of the multilayer flexible substrate 4. A release switch 11 and a power switch 12 are mounted on the flexible portion 4f corresponding to the upper surface of the battery box. Similarly, a strobe circuit is mounted on the rigid portion 4b corresponding to the upper surface of the battery box. Since relatively large components such as a trigger coil and a transformer are mounted on the strobe board portion, if the release switch 11 and the power switch 12 are mounted on the strobe board portion 4b, the distance from the release button 8 is too wide. By providing a slit and dividing it into 4b and 4f, even parts having different heights can be mounted in close proximity on the substrate.

<Embodiment 2>
In the present embodiment, a variation in the arrangement of the multilayer flexible substrate will be described with respect to the first embodiment. Since the structure of the camera and the arrangement of the main substrate portion of the multilayer flexible substrate in this embodiment are the same as those in Embodiment 1, the differences will be described in detail here.

  FIG. 6 shows a rear perspective view of the camera. 19 is a liquid crystal display, and 20 is a hinge portion of the liquid crystal display. FIG. 7 is a development view of the multilayer flexible substrate in the second embodiment. Reference numeral 4i denotes an LCD substrate portion, and 4j denotes a flexible substrate.

  The liquid crystal display 19 is movable, and can be rotated 180 degrees by the hinge portion 20. At this time, a substrate for displaying a photographed image near the panel is required. The flexible portion of the multilayer flexible substrate is disposed at the hinge portion, and the LCD substrate portion is disposed inside the liquid crystal display. The flexible substrate of the LCD panel and the backlight is connected to the LCD substrate portion by a connector. This enables a configuration that does not require a separate flexible substrate for passing the LCD substrate and the hinge portion.

  Further, not only the liquid crystal display but also a flexible part may be arranged on a battery cover or a hinge part of a pop-up strobe.

  It is possible to reduce the number of components while maintaining an integral structure with the main board portion, to reduce the number of boards, and to realize a small size and high density.

1 is a front perspective view of a camera according to the present invention. It is AA sectional drawing of FIG. It is a back surface perspective view of the camera concerning the present invention. It is an expanded view of the multilayer flexible substrate of Embodiment 1 of this invention. It is a camera front perspective view which shows the inside of the housing | casing of Embodiment 1 of this invention. It is a camera back perspective view of Embodiment 2 of the present invention. It is an expanded view of the multilayer flexible substrate of Embodiment 2 of this invention. It is a figure which shows the assembly state of the conventional multilayer flexible substrate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera body 2 Battery box 3 Battery cover 4 Multilayer flexible substrate 5 Recording media storage box 8 Shutter button 9 Power button 14 Power terminal 19 Secondary battery 15 CCD
17 CCD flexible board 18 Flexible connector

Claims (20)

In a camera having a multilayer flexible wiring board composed of a rigid part and a flexible part and a battery box for storing a battery,
A camera, wherein a plurality of surfaces of a battery box housed in a camera housing are arranged so as to be surrounded by a multilayer flexible wiring board.   2. The camera according to claim 1, wherein the rigid portions of the multilayer flexible wiring board are connected by a plurality of flexible portions.   The camera according to claim 2, wherein the plurality of flexible portions are arranged on different surfaces of the battery box according to claim 1.   2. The camera according to claim 1, wherein the CPU circuit and the signal processing circuit section are arranged on the surface having the largest area of the battery box in the multilayer flexible wiring board.   2. The camera according to claim 1, wherein a power supply circuit portion is disposed in a power supply terminal installation portion of the battery box in the multilayer flexible wiring board.   The camera according to claim 1, wherein the camera includes a movable portion and a main body, and the movable portion and the main body are connected by the flexible portion.   The camera according to claim 6, wherein the movable part is a liquid crystal display.   The camera according to claim 6, wherein the movable part is a battery lid.   The camera according to claim 6, wherein the movable part is a pop-up strobe.   2. The camera according to claim 1, wherein a recording medium storage portion is mounted on the multilayer flexible wiring board. In a camera having a multilayer flexible wiring board composed of a rigid part and a flexible part, a recording medium storage box for storing a recording medium, and a battery box for storing a battery,
A camera characterized in that a plurality of surfaces of a recording medium storage box housed in the camera housing are arranged so as to be surrounded by a multilayer flexible wiring board.   The camera according to claim 11, wherein the rigid portions of the multilayer flexible wiring board are connected by a plurality of flexible portions.   The camera according to claim 12, wherein the plurality of flexible portions are arranged on different surfaces of the recording medium storage box according to claim 1.   12. The camera according to claim 11, wherein the CPU circuit and the signal processing circuit section are arranged on the surface having the largest area of the battery box in the multilayer flexible wiring board.   The camera according to claim 11, wherein a power supply circuit section is disposed in a power supply terminal installation section of the battery box in the multilayer flexible wiring board.   The camera according to claim 11, wherein the camera includes a movable portion and a main body portion, and the movable portion and the main body portion are connected by the flexible portion.   The camera according to claim 16, wherein the movable part is a liquid crystal display.   The camera according to claim 16, wherein the movable part is a battery lid.   The camera according to claim 16, wherein the movable part is a pop-up strobe.   The camera according to claim 11, wherein a power supply terminal is mounted on the multilayer flexible wiring board.

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