Dial position changing device of a camera
View Patent ↗A camera includes a dial body provided on a camera body to be manually rotatable; and a manual operation device, provided on the camera body separately from the dial body, for rotating the dial body.
1. A camera comprising:
a manually rotatable dial body provided on a camera body; and
a manual operation device, provided on the camera body separately from the dial body, that rotates the dial body.
2. The camera according to claim 1 , further comprising:
a dial position detector that detects a rotational position of the dial body; and
an indicator that visually indicates information on the rotational position of the dial body which is detected by the dial position detector,
wherein the manual operation device is provided on the camera body at a position so as to be capable of being operated while allowing a user to view both the manual operation device and the information on the indicator at the same time.
3. The camera according to claim 2 , wherein the dial body is provided on top of the camera body, and
the manual operation device and the indicator are provided on a back surface of the camera body.
4. The camera according to claim 2 , wherein the dial position detector comprises:
a slidable contact brush fixed to a portion of a periphery of the dial body; and
a wiring board provided along a circumference of the dial body and having a pattern of conductors with which the slidable contact brush comes into sliding contact, wherein a state of conduction among the conductors changes in accordance with a change in the rotational position of the dial body.
5. The camera according to claim 4 , wherein the wiring board comprises a flexible printed wiring board.
6. The camera according to claim 2 , wherein the indicator comprises an LCD which indicates object images captured by an image pick-up device.
7. The camera according to claim 6 , wherein the manual operation device comprises a manual operation button positioned in a close vicinity of the LCD.
8. The camera according to claim 1 , wherein the dial body serves as a mode select dial for selecting a desired mode from among a plurality of modes.
9. The camera according to claim 8 , wherein the plurality of modes comprise different exposure modes and different setting modes.
10. The camera according to claim 1 , wherein the camera is a digital camera having an image pick-up device.
11. A camera comprising:
a manually rotatable dial body provided on an outer surface of a camera body
a dial driving device that drives the dial body; and
a manual operation device that actuates the dial driving device.
12. The camera according to claim 11 , further comprising:
a dial position detector that detects a rotational position of the dial body; and
an indicator that visually indicates information on the rotational position of the dial body which is detected by the dial position detector,
wherein the manual operation device is provided on the camera body at a position so as to be capable of being operated while allowing a user to view both the manual operation device and the information on the indicator at the same time.
13. The camera according to claim 12 , wherein the dial position detector comprises:
a slidable contact brush fixed to a portion of a periphery of the dial body; and
a wiring board provided along a circumference of the dial body and having a pattern of conductors with which the slidable contact brush comes into sliding contact, wherein a state of conduction among the conductors changes in accordance with a change in the rotational position of the dial body.
14. The camera according to claim 12 , wherein the dial body is provided on top of the camera body, and
the manual operation device and the indicator are provided on a back surface of the camera body.
15. The camera according to claim 11 , further comprising a clutch that engages and disengages the dial driving device with the dial body to allow rotation of the dial driving device to be transferred to the dial body and to prevent the rotation of the dial driving device from being transferred to the dial body, respectively.
16. The camera according to claim 15 , wherein the clutch comprises:
a rotatable member rotated by the dial driving device;
a plurality of recesses formed circumferentially on one of the rotatable member and the dial body; and
a click ball provided on the other of the rotatable member and the dial body to be selectively engaged in the plurality of recesses via a biasing device.
17. The camera according to claim 16 , wherein the rotatable member comprises a gear positioned immediately below the dial body.
18. The camera according to claim 16 , wherein the dial driving device comprises a motor that drives the dial body, and
the rotatable member comprises a gear positioned immediately below the dial body to be engaged with the motor via at least one reduction gear.
19. The camera according to claim 16 , wherein the biasing device comprises a compression coil spring accommodated in an accommodation hole formed on the dial body.
20. The camera according to claim 11 , wherein the dial driving device comprises one of a DC motor and a stepper motor which rotates the dial body via a gear mechanism.
21. The camera according to claim 11 , wherein the dial driving device comprises an ultrasonic motor, positioned coaxially with the dial body, for directly driving the dial body.
22. The camera according to claim 11 , wherein the dial body serves as a mode select dial for selecting a desired mode from among a plurality of modes.
23. The camera according to claim 22 , wherein the plurality of modes comprise different exposure modes and different setting modes.
24. The camera according to claim 12 , wherein the indicator comprises an LCD which indicates object images captured by an image pick-up device.