JPS58172641A - Microfilm reader - Google Patents

Abstract

PURPOSE:To obtain a microfilm reader which is compact and is portable, by placing a portable housing and a required mechanism in the cover thereof, folding a screen to a compact state and constituting a supporting guide member in such a way that a reflecting mirror can be set in an adequate position with respect to an optical system cooperatively with the screen. CONSTITUTION:An optical system is disposed at the center on the side opposite from a reflecting mirror 21, and a film cassette 31 and a take-up reel 34 are disposed on the right and left thereof. A film is so guided as to pass through a film gage 9 by a film guide roll 35. As a screen 12 is raised manually, a fulcrum 18 rotates around a fulcrum 20, and a connecting arm 14 moves leftward and a fulcrum 17 in a groove 16. A connecting arm 13 and frame body 15 are pulled upward until both align to each other and further the body 15 is shifted down on the opposite side. The fulcrum 17 in this stage falls into the longitudinal groove of the guide groove 16 and is held locked, then the light past the film is reflected by the mirror 21 and forms an image on the screen 12 as shown by an arrow 22.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a microfilm reader, and more particularly to a microfilm reader that is small and easy to carry.

Conventional microfilm readers are large and not portable, and users have no choice but to go to a fixedly installed reader and use it. Therefore, it is not suitable for cases where many people want to use it frequently.

OBJECTS OF THE INVENTION An object of the present invention is to provide a small, handy, and inexpensive microreader.

Traditional microreaders are large, search less frequently,
And because it was a centralized system, the number of installations was small. This microreader was designed with the main focus on making it accessible and readily usable by many people. You can still carry this microreader containing microfilm in your hand like a bag and take it with you on business trips to customer sites, etc., for transporting documents.

Embodiments of the Invention Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a microfilm reader according to the present invention. Therefore, it is a casing of a beamer and has a handle 2 attached thereto in a shape similar to an attache case. The lid 3 is attached to the housing 1 so that it can be opened and closed, and the mechanism for opening and closing this will be described later. A mounting plate 4 made of a metal plate and having a league shape along the inner surface of the case 1 is mounted inside the case 1. A microfilm projection mechanism is mounted on a substrate 5 fixed to a mounting plate 4. What is shown in Figure 1 is a concave @! 6, an optical system mechanism consisting of a light source 7, a condenser lens 8, a film gate 9, a projection lens 1o, and an image rotation 11 capable of rotating an image. Next, the screen mechanism of the present invention will be explained with reference to FIGS. 1, 2, and 4. 12 is a screen on which +l! is projected, and 15 is a frame to which a reflecting mirror 21 is fixed. It is.

The lower end of the frame 15 is rotatably fixed to the lower part of the mounting plate 4 about a fulcrum 20, and the upper end is rotatably fixed to the screen by a connecting arm 15. The lower end of the screen and the middle of the frame 15 are connected to a connecting arm 14. Both fulcrums 19 and 17 are rotatable. Furthermore, the fulcrum 17 is connected to the guide groove 1 provided on the side surface of the mounting plate 4.
It is configured to move within 6. Guide @ 1
6 is a horizontal groove and a fulcrum 1 provided at its central end
It has a vertical groove that can lock the movement of 7.

When the screen is stored, these are folded as shown in FIG. The fulcrum 17 is at the right end of the diagram @16. FIG. 2 shows a state in which the screen 12 is raised halfway. The fulcrum 18 rotates about the fulcrum 20 as the screen 12 is raised by the hand. Accordingly, the connecting arm 14 moves to the left in the figure, and the fulcrum 17 moves in the groove 16. FIG. 1 shows that the screen 12 is pulled up until the connecting arm 13 and the frame 15 are in a straight line.
Furthermore, a state in which the frame body 15 is tilted to the opposite side is shown.

At this time, the fulcrum 17 sinks into the vertical groove of the guide groove 16 and becomes locked. At this time, the light that has passed through the film is reflected by the reflecting mirror 21 as shown by the arrow 22 and is reflected on the screen 12.
connect greatness to

5 and 5 show the opening/closing mechanism of the lid 5. FIG.

When the oath 5 is not in use, it is fixed to the housing 1 with a fastener 29.50. The lid 3 is provided with a lid mounting plate 26 for locking the lid 3 to the mounting plate 4. A groove 28 is formed here and engages with a guide pin fixed to the mounting plate 4. Lid arm 23 is located on the lid 3 away from @28.
is fixed, and the other end of the lid arm 23 is provided with a guide bin 24, which engages with a guide groove 25 provided in the mounting plate 4. When the lid 5 is opened, the guide pins 24, 27 slide in respective guide grooves 25, 28 into the locked position.

FIG. 6 is a plan view of the reader of the present invention with the lid 5 removed. The optical system explained in FIG. 1 is arranged at the center on the opposite side from the reflecting mirror 21. A film cassette 51 and a take-up wheel 34 are arranged on the left and right sides thereof, and a film guide roller 55 guides the film to pass through the film gate 9. The film is attached to the motor (
Winding and rewinding are performed by a drive (not shown). A mark added to the roll film is detected by a sensor 56, and the number of frames is displayed on a frame number display 32. The lamp house 56 covers the light source, and the dial 38 controls driving and stopping of the motor, forward and reverse rotation, and the like. 37 is a device that opens and closes the guide roller 55, and 33 is a main switch.

In the microfilm league as described above, the following effects can be obtained.

(1) The screen can be folded into a compact state, making it easy to carry.

(2) Since it is equipped with a reflecting mirror and can be set in a predetermined position in conjunction with the screen, it is easy to handle and requires a long distance from the film to the screen. It can also be made into a compact shape.

(5) Chopsticks block light from above the screen and make the screen easier to see 1° Effect of the invention According to the present invention, a compact and portable microfilm reader can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of an embodiment of the present invention, Fig. 2 is a side sectional view showing the screen in the middle of setting, Fig. 5 is a side sectional view showing the opening/closing mechanism with the lid closed, and Fig. 4 is FIG. 85 is a side sectional view showing the screen mechanism with the lid closed, FIG. 85 is a side sectional view with the lid open, and FIG. 6 is a plan view with the lid removed. 1...Housing 4...F dimension plate 12
...Screen 15.14...Connection arm 15...Reflector fixing frame 16...Guide groove 21...Reflector 17.1B, 19.20...Fulcrum point I Danzai 2 figure

Claims (1)

[Scope of Claims] A casing, a light reflecting means including a reflecting mirror, one end of which is rotatably fixed to the bottom of the casing or near the bottom of the casing, a screen on which a microfilm is projected; a first arm member whose both ends are rotatably fixed to the other end of the light reflecting means and one end of the screen, and whose both ends are rotatable to a desired midpoint between the other end of the screen and the light reflecting means; a second arm member freely fixed; the screen and the second arm member;
It has a guide means that allows the fixed part of the arm to move laterally, and a projection means that projects a microfilm, and when the screen is raised, light from the projection means is reflected by the light reflection means. A microfilm reader, characterized in that the microfilm reader is arranged so that the image is displayed on the screen.