JP2002365706A - Layout of circuit board in camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a camera by efficiently placing a battery and circuit boards in a camera main body. SOLUTION: A main circuit board 5 on which a control part is mounted, is placed at the object side or the photographer side along the battery 1 housed in the main body of the camera. Other circumference circuit boards 6 and 7 are orthogonalized to the main circuit board 5 and placed along the battery 1. The circumference circuit boards 6 and 7 can be placed at one side of the battery 1, or placed so as to interpose the battery 1 at both sides of the battery 1. Circuits that require a large electric current such as power supply circuits or flash circuits are mounted on the circumference circuit boards 6 and 7 to be placed along the battery 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a circuit board layout in a camera.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for miniaturization of cameras. In particular, in a digital camera, how the battery and the circuit board are laid out in the camera has a great effect on miniaturization of the camera.

An object of the present invention is to efficiently arrange a battery and a circuit board in a camera body to contribute to downsizing of the camera.

[0004]

Means, actions and effects for solving the problems The present invention provides
The present invention has been made in order to effectively solve the above problems, and provides a camera having the following features.

[0005] In the camera of the present invention, a main circuit board having a control unit is arranged along the battery housed in the camera body, on the subject side or on the photographer side of the battery. Further, another peripheral circuit board is arranged orthogonal to the main circuit board and along the battery.
Other peripheral circuit boards may be arranged on both sides along the battery.

According to the above configuration, since the circuit boards are not stacked in the thickness direction of the camera, it is advantageous in reducing the thickness of the camera in the optical axis direction. Further, since the peripheral circuit board is arranged orthogonal to the main circuit board, it is easy to bring the edge of the peripheral circuit board close to the main circuit board. Therefore, there is an advantage that each peripheral circuit board can be easily connected to the main board on which the control unit is mounted.

The above arrangement of the circuit boards is preferably applied to a digital camera because the number of boards is large and the thickness can be reduced.

It is preferable that the peripheral circuit board disposed along the battery has at least one of a power supply circuit and a flash circuit mounted thereon. A large current generally flows through the connection lines between these circuits and the battery.
Therefore, by arranging a substrate on which such a circuit is mounted near the battery, there is an advantage that the length of a line through which a large current flows can be minimized.

[0009]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front perspective view of a digital camera according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line 2-2 in FIG.

In a battery chamber 2 provided in the camera body, two batteries 1 are accommodated sideways. The battery compartment is configured to be openable and closable on the side of the camera, from which the battery 1 can be inserted and removed.

The main circuit board 5 has a control unit including a CPU for controlling the entire camera, and all other peripheral circuit boards are electrically connected to the main circuit board 5. The main circuit board 5 is disposed on the rear surface side (photographer side) of the battery 1 in the camera main body at right angles to the photographing optical axis direction. The main circuit board 5 may be arranged on the front side (subject side) of the battery 1.

In the embodiment shown in FIGS. 1 and 2, first and second two peripheral circuit boards 6, 7 are arranged in the camera body. Each peripheral circuit board is orthogonal to the main circuit board 5 and on both sides (upper and lower sides) of the battery 1
Are arranged along the battery 1 so as to sandwich the battery 1. Each of the peripheral circuit boards 6, 7 needs to be electrically connected to the main circuit board 5, but the peripheral circuit boards 6, 7
Are arranged orthogonally to the main circuit board 5, the edges 6a and 7a of the peripheral circuit board can be brought close to the surface of the main circuit board 5, and electrical connection becomes easy.

The first peripheral circuit board 6 has a power supply circuit mounted thereon and is arranged along the battery 1 below the battery 1. The second peripheral circuit board 7 has a flash circuit mounted thereon, and is arranged near the strobe 3 provided above the center of the camera. Also, the second peripheral circuit board 7
It is arranged along the battery 1 above the battery 1.

Since a large current generally flows through the line connecting the power supply circuit or flash circuit to the battery 1, it is preferable to arrange the line as close as possible to the battery 1. The arrangement of the first and second peripheral circuit boards 6, 7 in FIG. 1 meets such a demand.

FIG. 3 is a sectional view for explaining a second embodiment of the present invention. In this embodiment, the first peripheral circuit board 6 arranged below the battery 1 in the first embodiment
Is arranged above the camera. In this example, it is preferable to mount a flash circuit and a power supply circuit on the second peripheral circuit board 7 arranged along the battery 1. In the second embodiment of FIG. 3, the first peripheral circuit board 6 includes ICs 63 and 64.
And so on.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a digital camera according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a cross-sectional view illustrating a digital camera according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2 Battery room 3 Strobe 4 Lens tube 5 Main board 6 First sub board 7 Second sub board 61-64 IC 71 Step-up transformer 72 IC 73 Trigger coil

Claims (4)

[Claims] 1. Along a battery housed in a camera body,
On the subject side or photographer side of the battery, a main circuit board equipped with a control unit is arranged, and other peripheral circuit boards are orthogonal to the main circuit board,
A camera, which is arranged along the battery. 2. The camera according to claim 1, wherein the battery is detachable from a side of the camera, a main circuit board is disposed in a direction orthogonal to an optical axis direction of the photographing lens, and a peripheral circuit board is disposed above or below the camera along the battery. The camera according to claim 1, wherein: 3. Along the battery housed in the camera body,
On the subject side or photographer side of the battery, a main circuit board equipped with a control unit is arranged, and other peripheral circuit boards are orthogonal to the main circuit board,
A camera characterized by being disposed along both sides of the battery. 4. The camera according to claim 1, wherein the peripheral circuit board has at least one of a power supply circuit and a flash circuit mounted thereon.