Device for displaying data in camera viewfinder

A device for displaying data in the viewfinder of a camera including a data film on which photographic data such as shutter speed is provided, and LED package including LEDs for illuminating the data on the data film and terminals of the LEDs, and a field frame. The LED package and the field frame are formed as a single unit by molding them with resin. As a result, it is not necessary to assemble separate components with a high precision, thereby significantly simplifying the assembly operation of the device.

BACKGROUND OF THE INVENTION 
The present invention relates to an improved data display device adapted to 
display photographing data such as shutter speeds in the viewfinder of a 
camera. 
A conventional data display device of this type, as shown in FIGS. 1 and 2, 
includes a field frame 11, a data film 21, and an LED package 31. The 
field frame 11 is a thin plate having a rectangular opening 12 for 
defining the field of vision and a cut-out 13 formed in one side of the 
plate continuous with the opening 12. The data film 21 is a rectangular, 
transparent film corresponding in size to the cut-out 13. Data 22 such as 
shutter speeds are printed on the film 21. The LED package 31 is composed 
of LEDs 32, the number and positions of which correspond to those of the 
data 22 printed on the data film 21 and their terminals 33. The LEDs 32 
and the terminals 33 are molded into a unit with resin. 
The components 11, 21 and 31 are assembled as follows: As shown in FIG. 2, 
the data film 21 is fitted to the cut-out 13 of the field frame 11, and 
the LEDs 32 of the LED package 31 are accurately lined up with the data 22 
of the data film 21. Under this condition, the components are joined 
together, for instance, using an adhesive. In this assembly operation, it 
is essential to position the three components with high precision. 
Accordingly, great care must be taken in positioning the components. Thus, 
the efficiency of the assembly operation is considerably low. 
SUMMARY OF THE INVENTION 
In view of the above-described difficulties accompanying a conventional 
device for displaying data in the viewfinder of a camera, an object of the 
invention is to provide a device for displaying data in the viewfinder of 
a camera with which it is unnecessary to adjust the positional 
relationship between the LED package and the field frame, and accordingly 
the assembly operation thereof is simple. 
In accordance with this and other objects, a specific feature of the 
invention resides in that the LED package and the field frame are 
simultaneously formed as one unit with resin.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
The invention will be described with reference to preferred embodiments 
thereof as shown in FIG. 3. 
In FIG. 3, reference numeral 21 designates a data film, which is the same 
as the data film of the conventional device shown in FIGS. 1 and 2; and 
31, a LED package which is, according to the invention, formed integrally 
with a field frame 42. The LED package 41 is formed as follows: LEDs 32 
and their terminals 33 are molded with resin in such a manner that the 
LEDs 32 and the terminals 33 are fixedly secured by a package part 43 of 
resin. The package part 43 extends in a direction opposite to the 
direction in which the terminals 33 extend, thus forming a field frame 42 
having a rectangular opening 44. The opening 44 defines the field of 
vision. The LEDs 32 are lined up on one side of the package part. As in 
the conventional device, the number and positions of the LEDs 32 
correspond to those of the data 22 printed on the data film 21. According 
to a selected shutter speed, a corresponding one of the LEDs 32 is turned 
on to illuminate the respective datum 22. 
The device of the invention is made up of only two components: the data 
film 21 and the LED package 41. The device can be assembled as follows. 
The data 22 of the data film 21 are lined up with the respective LEDs 32 
of the LED package 41. Under this condition, the data film 21 is fixedly 
secured to the LED package 41, for instance, by using an adhesive. 
Accordingly, the assembly of the components of the device of the invention 
can be more readily achieved than in the conventional device. 
In the above-described embodiment, the field frame 32 has a thickness the 
same as that of the package part 43 integral with the LEDs 32 and the 
terminals 33. However, the thickness of the field frame 42 may be made 
smaller or larger than that of the package part 43 according to the 
configuration of the part on which the device should be mounted. 
As is apparent from the above description, in the device for displaying 
data in the viewfinder of a camera according to the invention, the LED 
package includes an integral field frame. Therefore, the device is made up 
of only two components: the LED package and the data film. Accordingly, 
the components can be readily positioned and assembled.