JPH0462653B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The overhead projector of the present invention has a standard stage for holding a file page for color slides and a long upper stage for holding a long strip film. The pins provided on the top of the upper stage guide frame are commonly used and can be replaced, allowing the upper and lower stages to be used for both file pages for color slides and long unmounted strip films.
It can be moved vertically and horizontally by being guided by two sets of guide rails that are orthogonal to the axis and Y axis, and in particular, the long strip film is held on a stage for long lengths, and the part that is extended laterally than the standard size. The present invention aims to provide a multipurpose overhead projector that can freely project film frames on a screen for observation.

(Prior art) The present inventor previously published Japanese Patent Publication No. 55-45887,
-47731 and Utility Model Publication No. 57-54100, the vertical and horizontally movable vertical and horizontal stages provided above the projector body of an overhead projector hold a slide file page in which a large number of color slides are mounted. It is configured so that it can be moved to the position of
The upper stage holding the slide file pages was moved vertically and horizontally to focus and project the slide film of each slide file onto the projection lens system.

Such an overhead projector has two movable stages (upper and lower) that move horizontally and vertically, and a holding frame that holds the slide file page is hooked and fixed to the upper stage, and a large number of stages fitted on the slide file page are fixed to the upper stage. Since the projection is focused on the slide at a more arbitrary position on the slide film, the normal standard slide holding frame is 31mm.
The frame was 28 cm x 28 cm, and a slide film or biopsy preparation was projected onto it to magnify the image for observation.

(Problem to be solved by the invention) The slide file page mentioned above is mainly 35mm.
If it is a slide file page for film or a file page for elongated biopsy preparations, and the outlines of these file pages match, the file page holding frame can be held on the upper stage with the same pin, so the slide film can be held on the upper stage. The same overhead projector can be used for both viewing and viewing biopsy preparations.

However, these days, X-ray film is _A3 size (40cm
x 40 cm), and cannot be held with the above-mentioned standard slide holding frame (width 310 mm x depth 280 mm), so a holding frame that is both large in width and depth is required.

Also, the endoscope film has a width of 16 mm and a length of 300 to 400 mm.
There is a desire to place a long length of strip film (mm) between a transparent glass mount and place it on a projector to project and view each frame of the film, but the conventional standard slide holding frame It cannot be held.

Other long strip films include Brawny version film (width 6cm x 6cm x length 40mm)
cm) There are panoramic films (width 6cm x length 40cm) and microfilms (width 16mm and length 15cm to 40cm).These films have small pieces that are separated and held as a long strip film without forming a mound. There is a demand for using a projector for projection by sandwiching two transparent glass plates between a glass stage stacked on top of each other, but there is still no way to project such a long film between two glass plates for viewing. There was no projector that met the requirements.

(Means for Solving the Problems) The present invention has been devised to solve the above-mentioned problems. A projector body, a reflector projection lens system held by a support arm extending from one side of the projector body to above the projection condenser lens, and guide rails provided on both sides of the projector main body. In an overhead projector that has a lower stage that is movable back and forth in the X-axis direction, an upper stage guide groove is provided in the lower part of the lower stage in the Y-axis direction perpendicular to the guide rail, and the lower stage is An upper stage guide frame is provided at the free end so as to be movable left and right through a roller and a guide rail provided in the Y-axis direction perpendicular to the guide rail of the lower stage, and the upper stage guide frame is installed on both sides of the upper stage guide frame. The long holes of the elongated upper stage, each having a long hole that engages with the integrated positioning pin, and a portion extending laterally by a predetermined distance L, are engaged with the pins of the upper stage guide frame, and the other end is attached to the base of the lower stage. A guide plate with a long hole is provided at the edge of the long upper stage in the X-axis or Y-axis direction, and a long stage The pin of the top plate of the upper stage into which the lip film is inserted is fitted into the long hole of the guide plate, which has a drop groove bent at the end. This overhead projector for long strip film is characterized in that the upper plate can be opened and closed by shifting it in the X-axis or Y-axis direction.

(Configuration) The configuration of the present invention is explained below according to the attached drawings.
Explain in detail. Fig. 1 is an external view of the overhead projector of the present invention, Fig. 2 is a cross-sectional side view of its main body, and Fig. 3 is a state in which the lower stage is pulled out to the side and fitted with the upper stage guide frame. 4 is a perspective view showing a state in which the upper stage guide frame is removed, and FIG. 5 is an enlarged sectional view showing the engaged state of the lower stage, upper stage guide frame, and upper stage.

In FIG. 1, 1 is the camera body, 2 is a condenser lens for projecting light, 3 is a semi-transparent plate that covers the top surface of the projector body 1, 4 is a reflector, 5 is a projection lens system, and 6
1 is a supporting arm extending from one side of the projector body 1 to above the condenser lens 2; 7 is an adjustment screw for focusing the projection lens; 8 is a pin attached to one side of the projector body for removal. A freely provided lid, 9, indicates a projection screen. The projection screen 9 has a support rod 10 having a long hole 10A that fits with a pin 9A provided on both sides of the center thereof, and a support rod 11 that engages with a pivot 9B provided at the upper end of the projection screen 9.
2, and the base of the support rod 10 is connected by the fixing pin 1.
0B to the inside and upper part of the lid 8, and the support rod 11
is fitted into the elongated hole 14A of the guide 14 of the screen support rod by a pin 11A provided at its lower end, and this guide 14 is fixed below both sides of the lid. It is supported so that it can be attached to the inside and stored in the storage position. Reference numeral 13 denotes a light-shielding film provided to shield both sides of the projection screen, and 13A denotes a light-shielding film support arm which forms a channel and is hinged to the lower end of the projection screen, and the projection screen is retracted by flipping up the arm. Further, at a position where the projection screen 9 is extended forward, it is used for positioning. 1
5 indicates a reflecting mirror provided on the inner surface of the lid.

FIG. 2 shows a section of the projector main body 1, with reference numeral 16 indicating the light source of the condenser lens 2 for projecting light, and 16A indicating its cooling device.

FIG. 3 shows the details of the related structure of the projector main body 1, the lower stage, the upper stage guide frame, and the upper stage, where 17 is the guide rail for the lower stage, 18 is the lower stage engaged with this, and 1
9 is a bellows provided on the base side of the lower stage, 20 is a feed pitch conversion lever provided on one side of the lower stage, 20A is a conversion knob for the feed pitch conversion lever, and 21 is an upper portion provided on the free end side of the lower stage. The stage feed pitch conversion lever 21A indicates the feed pitch conversion knob.

In the present invention, a hooking portion 18A having rollers 23, 23 and a rail 24 is provided at the free end of the lower stage 18, and an upper stage guide frame 22 is attached to this hooking portion 18A.
2 to the roller 2 perpendicular to the sliding direction of the lower stage.
3, 23 and the rail 24, and is slidably engaged with the extension portion 22A of the upper stage guide frame 22.
A positioning pin 25 for the upper stage is installed on the upper stage 2 for the long strip film.
6, and the other end of the upper stage 26 is fitted into the upper stage guide groove 28 provided in the left and right direction on the base side of the lower stage 18, and the upper stage guide frame 22 is moved left and right. By sliding, the upper stage 26 is configured to be able to extend laterally by the length L of the elongated hole 27.

The upper stage 26 is made by combining two transparent glass or plastic plates, a lower plate 26A and an upper plate 26B, with a long strip film inserted between them, and the upper stage 26 is moved vertically and horizontally. This allows you to quickly view the required parts.

The upper stage 26 for the long strip film has a long hole 30 in the guide plate 29 provided on the side of the lower plate 26A, and pins 31 provided on both sides of the upper plate 26B are engaged with the long hole 30. By configuring the upper plate 26B of the upper stage 26 to be pulled out laterally and then opened upward, the upper plate 26B is prevented from colliding with the projection lens system 5 and the reflecting mirror 4 supported by the support arm 9. Configure.

FIGS. 6A and 6B show details of the upper stage 26 for strip film with long holes, in which the long holes 30 of the guide plate 29 provided on both sides of the upper stage 26 are provided with drop grooves 30A on the base side. The upper plate 26B and the lower plate 26A are arranged so that they fit together without any gaps and can hold a long strip film or the like.

FIG. 7 shows another example of the upper stage for holding the long strip film used in the present invention. The upper stage 26 has guide plates 29 on both sides of a lower plate 26A. This guide plate 29 is provided with a pair of long holes 30, 30 at the front and rear, and pins 3 of the upper plate 26B are inserted into the long holes 30, 30, respectively.
1 and 31, and the two upper plates 26B and 26B are pulled out to both the left and right sides, and the upper plate 2 of the upper stage 26 is fitted.
A long strip film 35 can be inserted between 6B and the lower plate 26A, so that it does not collide with the projection lens system 5 when the upper plate 26B is opened and closed.

FIG. 8 shows another example of the upper stage for holding the strip film used in the present invention. The upper stage 26 has guide plates 29 on both sides of a lower plate 26A. This information board 2
9 is provided with a pair of elongated holes 30 at the front and rear, and this elongated hole 30
When the pin 31 of the upper plate 26B is fitted into the pin 31 of the upper plate 26B and the upper plate 26B is pulled out to the side, a drop groove 30A is provided at the inner end of the long hole 30 and the pin 31 falls into it and is fitted. , so that the strip film inserted between the upper plate 26B and the lower plate 26A is sandwiched without any gap, and there is no gap between the upper plate 26B and the lower plate 26A at the position where the pin 31 is out of the drop groove 30A. When the upper plate 26B is opened and closed, the upper plate 26B is pulled out to the side and the strip film can be easily taken in and taken out without colliding with the projection lens system 5.

FIG. 9 shows a standard upper stage used in the apparatus of the present invention, and this standard upper stage 36 is equipped with a positioning hole 37 provided on one side, a latching collar 38 provided on the other side, and a presser lever 39. , Color slide page 4 with many color slides fitted to this
0 (see Fig. 10) or a preparation file 41 fitted with a biopsy preparation (see Fig. 11), etc., on one end of the standard upper stage 36. The sample recorded on the color slide or biopsy preparation can be viewed in an enlarged manner by moving the color slide or slide freely vertically and horizontally using an upper and lower stage and projecting it on a desired screen in an enlarged manner.

However, as mentioned above, such a standard upper stage is approximately rectangular with a width of 310 mm and a depth of 280 mm.
A3 size (40cm x 40cm) X-ray film cannot be held. Also, the endoscope film is 16mm wide and 300mm long.
This is a 400mm long strip film, and it cannot be held as long on the standard upper stage.

Other long strip films include Brownie film (width 6 cm x length 40 cm), panoramic film (width 6 cm x length 40 cm), and micro film (width 16 mm and length 15 cm to 40 cm). It takes too much effort to separate, mount, and hold onto a slide file page or prepared film, and there is no dedicated file page for that, and each frame of microfilm is a thin screen, so it takes a lot of effort to mount each one separately. Since this was inconvenient to use, the only option was to insert it between two transparent glass or plastic plates and attach it to the upper stage for viewing.

In the present invention, in order to hold the long strip film as described above, an upper stage that is as long as L cm is made on both sides, and the upper and lower plates are engaged and held together to hold the long strip film. The elongated upper stage 26 is assembled by fitting the elongated hole 27, which allows the upper stage for holding the film to be extended on both the left and right sides by at least Lcm, into the positioning pin 25 of the upper stage guide frame 22.
By moving the stage by L cm laterally, the film or preparation in the lateral extension can be seen, and for this reason, the upper stage for long lengths can be replaced with the standard upper stage. In this case, an upper stage guide frame 22 is specially provided between the lower stage 18 and the positioning pins 25 are set up from the upper stage guide frame 22 and used as both the standard type upper stage 36 and the long upper stage 26. It is designed so that it can be used with

(Function) In the projector of the present invention having the above configuration, two transparent glass plates are interposed between the upper plate 26B and the lower plate 26A of the long upper stage 26 above the condenser lens 2. Since the long strip film is held, this image is projected onto a reflecting mirror 15 fixed to the back surface of the lid 8 via a reflecting mirror 4 and a projection optical system 5. As shown in FIG. 1, when the projection screen 9 extends forward and is supported by screen support rods 10 and 11, the desired image is enlarged and the projected ornamental or medical image is sequentially enlarged. is projected.

According to the upper stage 26 for a long strip film of the present invention, the positioning pin 25 provided on the extension part 22A of the upper stage guide frame 22 is fitted into the elongated hole 27 of the lower plate 26A, which allows movement by L cm. Since the upper stage 26 can be moved by L cm in the left and right direction, the upper stage is extended by L cm in the left and right direction, and the end of the long strip film is attached to this extension. Even when held, the film frame at this end can be observed up to the limit position of the upper stage's horizontal movement.

The upper plate 26B and the lower plate 26 of the elongated upper stage 26 made of two transparent glass plates used in the present invention.
When a long strip film is sandwiched between A and A, the long strip film is cut into individual pieces, mounted, inserted into the slide file page, and held on the standard upper stage. Compared to the case of projection, this method has the advantage of omitting the focus of the film.

(Effects of the Invention) The effects of the present invention are listed below.

(1) According to the present invention, the upper stage guide frame 22 is engaged with the engaging part 18A provided at the free end of the lower stage 18 via the rollers 23 and 24, so that the upper stage guide frame 22 can slide left and right, and the upper stage 26 for long lengths is mounted on this upper part. Simply fit the elongated holes 27 into a pair of positioning pins 25 planted at appropriate positions on both sides of the stage guide frame 22, and fit the guide groove 28 provided on the other side of the lower stage 18 on the other side of the upper stage.
Since the upper stage 26 can be attached, replacement operations can be performed easily, and the positioning holes 37 of the standard type upper stage 36 can be fitted and fixed with the positioning pins 25 of the upper stage guide frame 22, so it can be easily replaced with the standard type upper stage 36. This has the effect of providing a new projector that can also be used as a long upper stage.

(2) The projector of the present invention has a specially constructed glass stage with a long hole 27 in the upper part whose width is extended by L cm so that the upper stage can hold two glass stages with long strip films interposed therebetween. Pin 25 for positioning the stage guide frame 22
By fitting with the upper stage 26, it becomes possible to extend the upper stage 26 laterally by Lcm and move it, and once a long strip film is set, the end portion of the film can be viewed vertically and horizontally. This has a great operational effect in that it is not necessary to change the film position during viewing or projection.

(3) The long upper stage 26 of the present invention consists of a transparent lower plate 26A and an upper plate 26B.
is designed so that its pins 31 engage the long holes 30 of the guide plate 29 provided on both sides of the lower plate 26A, so that it can be opened on one side or on both sides, and the upper plate of the upper stage can be opened and closed. When changing a long strip film or the like, there is a great effect that the film can be changed quickly without fear of collision with the projection lens system 5.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of the overhead projector of the present invention, Fig. 2 is a cross-sectional side view of its main body, and Fig. 3 shows the lower stage pulled out to the side and fitted with the upper stage guide frame. FIG. 4 is a perspective view showing a state in which the upper stage guide frame is removed; FIG. 5 is an enlarged sectional view showing the engaged state of the lower stage, upper stage guide frame, and upper stage; 6A and 6B are side and perspective views showing details of the upper stage for long lengths of the present invention;
8 is a perspective view showing another embodiment of the long upper stage of the present invention, FIG. 9 is a plan view of the standard upper stage used in the apparatus of the present invention, and FIG. 10 is the same standard upper stage. FIG. 11 is a plan view of a preparatory file held on the standard upper stage. DESCRIPTION OF SYMBOLS 1... Projector body, 2... Condenser lens for projecting light, 2A... Hole, 3... Semi-transparent plate, 4... Reflector, 5... Projection lens system, 6... Support arm, 7... …
Projection lens adjustment screw, 8...Lid, 9...Projection screen, 9A...Pin, 9B...Pivot, 10,1
1... Screen support rod, 10A... Long hole, 10
B...Pin, 11A...Pin, 12...Pin, 1
3... Light-shielding film, 13A... Light-shielding film support rod, 14...
...Screen support rod guide, 14A...Elongated hole for guide, 15...Reflector, 16...Light source, 16A
... Cooling device, 17 ... Guide rail for lower stage, 18 ... Lower stage, 19 ... Bellows, 1
8A...Latching part provided at the free end of the lower stage, 2
0... Lower stage feed pitch conversion bar, 21
...Upper stage feed pitch conversion bar, 22...
...Upper stage guide frame, 22A... Extension of upper stage guide frame, 23, 23... Roller, 24
...Rail, 25...Positioning pin for upper stage, 26...Upper stage for long strip film, 26A...Lower plate of upper stage, 26B...
...Top plate of the upper stage, 27...Elongated hole for positioning the upper stage, 28...Guide groove for the upper stage provided in the left-right direction at the base of the lower plate stage, 29
... Information boards on both sides of the upper stage, 30...
... Long hole in the guide plate, 30A ... Drop groove provided at the end of the long hole in the guide plate, 31 ... Pin that fits into the long hole 30 on both sides of the upper stage, 32 ... Hand ring, 38
... Lid clasp, 37 ... Positioning hole, 38 ... Latch flange, 39 ... Presser lever.

Claims (1)

[Claims] 1. A projector body that houses a light source and a condenser lens for projecting light and covers the top opening with a semi-transparent plate;
The reflector and projection lens system are held by a support arm that extends from one side of the projector body to above the projection condenser lens, and the guide rails provided on both sides of the projector main body allow X to be moved forward and backward. In an overhead projector having a lower stage movable in the axial direction, the lower stage 18
An upper stage guide groove 28 is provided at the base of the lower stage in a direction orthogonal to the guide rail 17, and a guide rail 24 and a roller are provided at the free end 18A of the lower stage 18 in the Y-axis direction orthogonal to the guide rail 17 of the lower stage. 23, the upper stage guide frame 22 is engaged with the upper stage guide frame 22 so as to be slidable left and right, and a pair of pins 25 are installed on both sides of the upper stage guide frame.
The elongated upper stage 26 has elongated holes 27 that are engaged with each other, and a portion extending laterally by a predetermined distance L is attached.The elongated holes of the elongated upper stage 26 are engaged with the positioning pins 25 of the upper stage guide frame 22, and the other end is attached to the lower part. The stage 18 is fitted into an upper stage guide groove 28 provided at the base of the stage 18 to be held slidably left and right, and a long hole 30 is formed at the edge of the elongated upper stage 26 in the X-axis or Y-axis direction.
A guide plate 29 is provided with a guide plate 29, into which a pin 31 of the upper plate 26B of the upper stage 26 for long lengths is inserted, and a long hole of the guide plate with a groove 30A is inserted into the end. 30, and the elongated upper stage 26 is constructed of two transparent plywood sheets that can be opened and closed by shifting the upper plate 26B in the X-axis or Y-axis direction. Overhead projector for lip film.