JP2568462Y2 - Camera information display section lighting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for an information display section of a camera, which illuminates an information display section on which information relating to shooting parameters such as an aperture value and a shooting distance of the camera is displayed.

[0002]

2. Description of the Related Art Conventionally, information on shooting parameters such as an aperture value and a shooting distance of a camera at present is displayed on an upper portion of a lens barrel of the camera such as an aperture ring. In a camera provided with a mechanism for directly viewing the information display portion or projecting the information display portion into the viewfinder, the user has confirmed the information about the information display portion by looking into the viewfinder.

[0003]

For this reason, especially when the brightness of the information display portion becomes dark, such as at night, it becomes difficult to visually recognize the photographing parameters. Relying on the feel of a click, etc., that is felt with the rotation of the ring, the current shooting parameter situation has to be estimated based on the feeling and experience. The present invention has been made in view of the above circumstances.In addition to using the information display unit illuminating means for notifying the operation of the self-timer means, even if the brightness around the camera becomes dark at night or the like, it is possible to visually recognize the current shooting parameters. An object of the present invention is to provide a lighting device for an information display section of a camera which can be reliably performed.

[0004]

In order to achieve the above object, the present invention is directed to a camera having an information display section on a lens barrel portion of the camera, the information display section displaying information on shooting parameters such as an aperture value and a shooting distance. Illumination means provided in the camera, for illuminating the information display unit, control means for controlling the light emission and extinction of the illumination means, and a self-switch for operating a self-timer means provided in the camera, When the control means determines that the self-switch has been operated, the control means causes the illumination means to emit light to notify that the self-timer means is operating. In order to achieve the above object, the present invention is configured such that the illuminating means for notifying the operation of the self-timer means is turned off when the self-timer means times out and a shutter is released. In order to achieve the above object, according to the present invention, the camera includes an illumination switch device attached to the control means, and the control means causes the illumination means to emit light when the illumination switch device is operated. And In order to achieve the above object, according to the present invention, the camera further comprises photometric means for measuring the brightness around the camera, and the control means includes a photometric value by the photometric means being lower than a predetermined value. The illumination means emits light when it is in the state. According to another aspect of the present invention, the camera further includes timer means for counting a predetermined time by being triggered when the illumination means emits light, and the control means includes: When the counting is completed, the illumination means is turned off.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a schematic configuration of an information display unit illuminating device of a camera according to an embodiment of the present invention by partial blocks, and FIG. 2 is a body part of a camera provided with the information display unit illuminating device shown in FIG. FIG. 3 is a side view showing a lens barrel having a display unit for photographing parameters and attached to the camera body of FIG. In FIG. 1, 1 is a body part 2
And a self-timer means provided with a self-timer means. As shown in FIGS. 1 and 2, a part of the body part 2 extending so as to face the upper part of the lens barrel 3 is provided. A light emitting diode 21 is provided as an illuminating means for notifying the self-timer means when the self-timer means is operating, and the light emitted from the light emitting diode 21 is provided outside the body portion 2. That is, a transmission window 22 for transmitting light in the forward direction of the camera 1 and the upper direction of the lens barrel 3 is formed.

As shown in FIG. 1, a control unit 23 including a central processing unit or the like is electrically connected to the light emitting diode 21 as shown in FIG.
An illumination switch 24 for arbitrarily turning on the light emitting diode 21 by a user (not shown) using the camera 1 and a self-switch 25 for activating the self-timer means are each electrically operated. Connected. The lighting switch 24 is a lighting switch device, and the lighting switch 24 and the self-switch 25 are, for example, a pressing contact switch or an on / off switching two-contact switch. It is arranged in the part.

On the other hand, on the lens barrel 3 side, for example, an aperture value 31a or the like is engraved on the peripheral surface of an aperture ring 31 as an information display unit forming a part of the lens barrel 3, as shown in FIG. As shown in FIG. 1, a lens circuit 32 that outputs the current situation regarding the photographing parameters as a signal is provided, and a signal from the lens circuit 32 is provided at a position in contact with the body portion 2 of the lens barrel 3. 2 through a lens information signal pin 26 of the body part 2 shown in FIG.
The data is input to the control unit 23. As shown in FIG. 1, the control unit 23 controls the illumination switch 24,
A body circuit section 23a to which signals from a self-switch 25 and a lens information signal pin 26 are input; and an illumination circuit section for emitting and extinguishing the light-emitting diode 21 based on the operation of the illumination switch 24 and the self-switch 25. 23b and a self-circuit unit 23c. The body circuit 23a is connected to the lighting switch 24.
And a signal from the self-switch 25 to recognize whether or not these switches have been operated. Also, based on a signal from the lens information signal pin 26, the camera 1 It is configured to detect whether or not a shooting parameter has been manually changed. That is, in the present embodiment, the body circuit unit 23
“a” also has a function as a manual operation detecting means.

Although not shown, the camera 1 of this embodiment is provided with photometric means including a photometric light receiving element.
The body circuit unit 23a of the control unit 23 controls the camera 1 based on the amount of light received by the light receiving element of the photometric unit (not shown)
It is configured to recognize whether or not the surrounding brightness is darker than a predetermined brightness. Also, the lighting circuit section 23b
The timer circuit (not shown) is provided in the apparatus, which is triggered when the lighting circuit unit 23b emits light from the light emitting diode 21 and starts time counting for a predetermined time. When the timer means (not shown) finishes time counting, the light emitting diode 21 is turned off.

Next, the operation of the information display unit illuminating device of the present embodiment having the above configuration will be described with reference to the flowchart of FIG. First, in step S1, it is determined whether or not the self-switch 25 has been operated.
If a is confirmed, and the operation is performed, the process proceeds to step S2 to activate the self-circuit unit 23c, and the self-circuit unit 23c causes the light emitting diode 21 to emit light in step S3. That is, the light emission of the light emitting diode 21 in step S3 is performed to notify a user (not shown) that the self-timer means is operating. For example, the self-timer means times out after a predetermined time. When the shutter (not shown) is turned off, the light emitting diode 21 is controlled by the self-circuit unit 23c.
Extinction. Thereby, the light emitting diode 21 can be used also for the operation notification of the self-timer means.

If the self-switch 25 has not been operated in step S1, the process proceeds to step S4, where the body circuit portion 23a detects the vicinity of the camera 1 based on the amount of light received by a light receiving element (not shown). It is determined whether or not the brightness of the image is darker than the predetermined brightness. If it is darker than the predetermined brightness, the process proceeds to step S5, and the camera 1
The body circuit unit 23a detects whether or not the photographing parameter has been manually changed. Step S5
If the photographing parameter has been manually changed in step S6, the process proceeds to the next step S6, where the lighting circuit unit 23b is operated, and the lighting circuit unit 23b performs the processing in step S6.
In step 7, the light emitting diode 21 is caused to emit light, and an internal timer is triggered to start time counting for a predetermined time. Then, when the timer means times out, the lighting circuit unit 23b switches the light emitting diode 2
1 is extinguished. That is, the light emission of the light emitting diode 21 in step S7 is for illuminating the display portion of the photographing parameter on the lens barrel 3, such as the aperture value 31a engraved on the peripheral surface of the aperture ring 31. When the lighting circuit unit 23b causes the light emitting diode 21 to emit light in step S7, the light amount is made lower than the light emission of the light emitting diode 21 when the self-timer means is operated in step S3, so that the current consumption is reduced. I have to.

On the other hand, when it is confirmed in step S4 that the brightness around the camera 1 is brighter than a predetermined brightness, or in step S5, the photographing parameters of the camera 1 are manually set. If it is confirmed that the change operation has not been performed, the process proceeds to step S8, and the body circuit unit 23a confirms whether or not the illumination switch 24 has been operated. Here, when the lighting switch 24 is operated, the processing of the steps S6 to S7 is executed.
If No. 4 has not been operated, the process returns to step S1.

As described above, according to the information display unit illuminating device of the present embodiment, light is emitted based on the situation of the manual change operation of the brightness and the photographing parameters around the camera 1 and the operation situation of the illumination switch 24. When the body circuit 23a of the control unit 23 determines that the self-switch 25 of the self-timer unit has been operated, the diode 21 emits light to illuminate the display portion of the photographing parameter on the lens barrel 3. Since the self-circuit unit 23c is operated and the light emitting diode 21 emits light to notify that the self-timer means is operating, even if the brightness around the camera becomes dark at night or the like, the information display portion is not displayed. In a camera provided with a mechanism for directly viewing the image or for projecting the information display portion into the viewfinder, When looking into the inner, addition can be performed reliably viewing of the current imaging parameters can be used also a light emitting diode 21 to operate the notification of the self-timer unit.

In this embodiment, the self-timer means operates as an illuminating means for illuminating a display portion of a photographing parameter on the lens barrel 3, such as an aperture value 31a engraved on the peripheral surface of the aperture ring 31. Although the configuration using the light emitting diode 21 for notifying this when performing the operation has been described, the illuminating means may be provided exclusively for illuminating the display portion of the photographing parameter. Also,
The light emitting diode 21 may emit light only while the lighting switch 24 is operated, or may automatically emit light only when the brightness around the camera 1 is low. In addition, the confirmation of the situation of the manual change operation of the photographing parameter performed after confirming whether the brightness around the camera 1 is low or not may be omitted. Further, in this embodiment, a photometric light receiving element (not shown) is used as the photometric means. However, a dedicated photometric means other than the light receiving element may be used, or the photometric means may be omitted. Further, in the present embodiment, the timer circuit (not shown) is provided in the illumination circuit section 23b, but the timer circuit may be omitted.

[0014]

As described above, according to the camera information display unit illuminating device of the present invention, the information display unit in which the information regarding the shooting parameters such as the aperture value and the shooting distance is displayed on the lens barrel of the camera. A illuminating means for illuminating the information display unit, a control means for controlling light emission and extinction of the illuminating means, and a self-switch for operating a self-timer means provided in the camera. When the control means determines that the switch has been operated, the control means causes the illumination means to emit light to notify that the self-timer means is operating. The current shooting parameters can be reliably viewed even when the light is dark, and the information display section illumination means is also used to notify the operation of the self-timer means. Rukoto can.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of an information display unit illuminating device of a camera according to an embodiment of the present invention in partial blocks.

FIG. 2 is a front view showing a body part of a camera provided with the information display unit illumination device shown in FIG. 1;

FIG. 3 is a side view showing a lens barrel having a display unit for photographing parameters and attached to the camera body of FIG. 2;

FIG. 4 is a flowchart showing an operation of the information display unit illumination device shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 camera 3 lens barrel 21 light emitting diode (lighting means) 23 control section (control means) 23a body circuit section (manual operation detecting means) 23b lighting circuit section (timer means) 24 lighting switch (lighting switch device) 31 aperture ring (information) Display part) 31a Aperture value (shooting parameter)

Claims (6)

(57) [Scope of request for utility model registration] 1. A camera having an information display section on a lens barrel portion of a camera on which information on shooting parameters such as an aperture value and a shooting distance is displayed. Illumination means provided on the camera and illuminating the information display section. When actuates the light emission control means for controlling the blinking light of the illumination means, the self-timer means provided in the camera
That includes a self switch, a, is the control means that said self switch is operated
When it is determined, the control means causes the lighting means to emit light.
To inform that the self-timer means is operating
A lighting device for an information display section of a camera, wherein 2. An operation of the self-timer means is notified.
The self-timer means has a time-out function.
The light is extinguished when the shutter is released
The illumination device for an information display section of a camera according to claim 1 . 3. The camera according to claim 1 , wherein said camera is attached to said control means.
A lighting switch device, and the control means includes:
Causing the illumination means to emit light when the switch device is operated
The illumination device for an information display unit of a camera according to claim 1, wherein: 4. The camera according to claim 1 , wherein said camera has a brightness around the camera.
Further comprising photometric means for measuring
When the photometric value by the photometric means is lower than the specified value
The lighting means is caused to emit light at a time.
The information display unit illumination device of the camera described in the above . 5. The camera according to claim 1 , wherein the shooting parameters are
Manual operation that detects that a change operation has been performed manually
Operation control means, the control means including
The manual operation detection means
Illuminating the illuminating means when a crop is detected.
The illumination device for an information display section of a camera according to claim 1 or 4, wherein 6. The camera, wherein the illumination means emits light.
Triggers a time count for a predetermined time
Further comprising an immersion means, wherein the control means comprises the timer
The lighting means when the means has completed time counting;
6. The light is extinguished.
The information display unit illumination device of the camera described in the above .