JPS6158020B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a viewfinder display device for displaying shutter speed, aperture value, etc. within a viewfinder.

Currently, automatic exposure control methods for cameras include aperture priority, shutter speed priority, dual auto type that allows you to select either of these, and a program method. In this case, an in-viewfinder display device is known that uses a transparent display board to display values such as the shutter speed in the viewfinder in order to notify the photographer of the automatically set shutter speed or aperture value. .

This conventional viewfinder display device has a diode row consisting of a plurality of light emitting diodes arranged along one end of an opaque lead frame of the diode within the viewfinder field of a camera, and a character information string opposite to this diode row. A transmissive display board equipped with a light emitting diode is arranged outside the lead frame so that the character information of the character information string is aligned parallel to the diodes, and one of the light emitting diode rows
The device is configured to indicate one piece of character information by selectively causing two diodes to emit light.

This conventional in-finder display device is fully satisfactory when displaying only one type of information. However, if the automatic exposure method is, for example, a dual auto type, the shutter speed or aperture value will be selectively and automatically set depending on the selected mode, so two types of display devices must be provided. When two devices are used, the two devices must be arranged vertically, which has the disadvantage of further narrowing the narrow viewfinder field of view.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a display device in the viewfinder of a camera having a compact structure and having two display boards having different character information strings.

The display device in the viewfinder of a camera according to the present invention has a diode array consisting of a plurality of light emitting diodes arranged along the edge of a lead frame of the diode in the viewfinder of the camera, and displays exposure information on both sides with the diodes sandwiched therebetween. Two transmissive display boards are provided such that one display board overlaps the lead frame and the other display board is outside the lead frame, at least the portion of the lead frame that overlaps with the display board is transparent, and the two The display panel is characterized in that both display boards are illuminated by field light.

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

The in-viewfinder display device according to the embodiment of the present invention shown in FIGS. 1 and 2 has a diode array 2 consisting of a number of light emitting diodes 1, and this diode array 2 is provided on an electrode 3. The lead wire 4 of this light emitting diode 1 is embedded and supported in a lead frame 5 arranged outside the electrode 3 with respect to the camera. This lead frame 5 is arranged in parallel with a focus plate 6 in the camera in the front-rear direction, and the lead wires 4 extend linearly outward from each diode 1. That is,
The diode row 2 is arranged along one edge of the lead frame 5, and the lead wire of each diode extends from the diode in the lateral direction of the camera and parallel to the reticle.

A first display plate 7 is fixed to the edge of the electrode 3 of the diode array 2 on the inside with respect to the camera, that is, on the opposite side to the lead frame across the diode array, by suitable fixing means. This first
The display board 7 includes a character information string 9 consisting of a plurality of character information, for example information 8 about shutter speed. This display board is of a transmissive type, so that the photographer can identify the information by the light from the focus plate 6. That is, the display board is either made of an opaque material and the information part is punched out, or it is made of a transparent material and the information of the opaque material is glued onto it. The display board 7 is arranged so that each piece of information 8 corresponds to and is parallel to the diode 1 of the diode row.

The lead frame 5 is made of a transparent material, and a second display board 10 of a transmissive type similar to the first display board is fixed onto the lead frame. This second display board 10 is provided with a text information string 12 that is composed of a plurality of text information 11 of a different type from the text information 8 on the first display board, for example, an aperture value. Character information 11 of this character information string 12
are arranged parallel to and corresponding to diode 1 of diode row 2, similar to the character information on the first display board. In the illustrated embodiment, the number of diodes forming the diode row 2 and the number of character information on the respective display boards arranged on both sides of this diode row are made equal.

When the above-described in-viewfinder display device according to the present invention is used in combination with a dual-type automatic exposure device, first the aperture value priority mode or the shutter speed priority mode is selected. In this case, a lamp may be illuminated on the information display board that is automatically set depending on the mode selection, so that the photographer can recognize which information is being displayed. When priority is given to the aperture value, the shutter speed is
In addition, when priority is given to shutter speed, the aperture value is automatically set, and this automatically set value causes the diode 1 corresponding to one character information in the character information string to selectively emit light, to display the automatically set shutter speed or aperture value.

In the above embodiment, a display device in the viewfinder was explained in which one diode row was arranged between two display boards, and this diode row was also used. It is also possible to use a type that can display both shutter speeds at the same time.

As explained above, the in-viewfinder display device of the present invention adopts a configuration in which two transmissive display boards with different character information strings are arranged on both sides of the light emitting diode row, resulting in a compact structure. It is economical because both display boards can be illuminated with field light and the diode array can be used for both display boards. Further, in the viewfinder display device of the present invention, one of the transmissive display boards and the lead frame of the light emitting diode is overlapped, so that one display board is placed sufficiently close to the light emitting diode row, and the display board It is easy to check the correspondence between each display and each diode, and the work of routing the leads does not become troublesome as in the case where the leads are all arranged on the back side of the light emitting diode array.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an in-finder display device according to an embodiment of the present invention, and a side view of the in-finder display device shown in FIGS. 2 and 1. DESCRIPTION OF SYMBOLS 1... Light emitting diode, 2... Light emitting diode row, 3... Support body, 4... Lead wire, 5... Lead frame, 7, 10... Display board, 8, 11...
Character information, 9, 12...Character information string.

Claims (1)

[Claims] 1. A diode row consisting of a plurality of light emitting diodes is arranged in the viewfinder of the camera along the edge of the diode lead frame, and two sheets containing exposure information are placed on both sides of the diode row. A transmissive display board is provided such that one display board overlaps the lead frame and the other display board is outside the lead frame, at least a portion of the lead frame that overlaps with the display board is transparent, and the two display boards are transparent. A display device in a viewfinder of a camera, characterized in that both display boards are illuminated by field light. 2. The viewfinder according to claim 1, wherein one of the two display boards is a display board for displaying a shutter speed, and the other is a display board for displaying an aperture value. Display device. 3. Claims 1 to 2, characterized in that the plurality of light emitting diodes are arranged in one row, and this one row of light emitting diodes is also used as both of the two display boards. The display device in the viewfinder described in Section 1. 4 The plurality of light emitting diodes are arranged in two rows, and the two rows of light emitting diodes are arranged in the two rows.
An in-finder display device according to any one of claims 1 to 2, characterized in that it indicates two display boards separately. 5. The viewfinder display device according to claim 1, wherein the two display panels are display panels that indicate a combination of any two of shutter speed, aperture value, and film sensitivity distance.