JPS6059577B2 - Image vertical adjustment device in projection equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a projection device for enlarging and projecting photographic film onto a large screen and observing the movement of the image. The present invention relates to an image vertical adjustment device that adjusts an image so that the image is vertically adjusted.

Traditionally, photographic film such as X-ray photography is projected onto a screen,
Projection devices are used to observe and diagnose the movement of images, but with these devices, the image position of the observation section necessary for diagnosis is at the top or bottom of the screen, making it impossible to observe the images sufficiently. There were many cases. In view of the above, the present invention deals with this problem. Namely, when taking X-rays for heart disease, etc., the present invention provides information on the screen so that more information can be accurately diagnosed and observed from the photographic film. The purpose is to move and adjust partial enlargement to the center.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image vertical adjustment device in a projection apparatus according to the present invention will be described in detail below with reference to the accompanying drawings. Reference numeral 1 denotes a substrate provided on the upper part of the main body 2, and this substrate 1 has a 16-sided rotating prism 3 in the center, a condenser lens 4, a reflecting mirror 5, and a light source halogen lamp 6 on the front side facing the rotating prism 3. Furthermore, a main lens 7 and a magnifying lens 8 are arranged on the back, and the image taken on the photographic film F running between the rotating prism 3 and the condensing lens 4 is magnified through the prism 3 and the main lens 7. Lens 8 magnifies the image and projects it onto the screen.

On the left and right sides of the rotating prism 3, there are rewind reels 10 for the film F.
and a take-up reel 11. Winding and rewinding reel 10,
11 is placed on flanges 16 and 17 on the upper parts of rotating members 14 and 15 which are supported by bearing bodies 12 and 13 in the main body 2,
Rotation is transmitted by rotating members 14 and 15. The flanges 16 and 17 are both located in window holes 18 and 19 bored in the substrate 1. The rotating members 14 and 15 have pulleys 20 and 2 at the bottom.
1 are attached, and shafts 26 and 27 are mounted on the upper part through bearings 25.
, 27, the reels 10, 11 are fitted through clamping bodies 28, 29 made of rubber or the like.

Each of the pulleys 20 and 21 is a pulley 32 and 33 provided on a shaft 31 that is rotatably supported by a shaft support 30 attached to the lower surface of the substrate 1.
and is communicated by belts 34 and 35.

The rotating prism 3 is inserted into a hollow shaft 38 which is supported by a shaft support 37 fitted in a window hole 36 formed in the substrate 1, and is attached to a receiving plate 40 of a shaft 39 supported by a comb or the like. A frame 42 with a sector 41 attached thereto is integrally attached to the shaft bearing body 37 with bolts or the like, and a gear 44 of an operating shaft 43 provided on the board 1
The rotation is transmitted to the bearing body 37 via the frame 42, thereby adjusting the left and right sides of the image.

The shaft 39 has a first blade 45 attached to its lower part, and a photoelectric detector 46.
The rotation speed is controlled by The hollow shaft 38 is provided with a sprocket 47 at the top and a pulley 1J48 at the bottom, and the pulley 48 is connected to a pulley 49 attached to the shaft 31 via a belt 50. A drive pulley 51 is attached to the shaft 31 and connected to a drive motor 53 via a belt 52. Shafts 54 and 55 are attached to the bottom surface of the substrate 1 so as to face downward to the left and right, and screws 54'' and 55'' are screwed into the ends of each of these shafts 54 and 55, and each of these shafts 54 and 55 is connected to the shaft. Worm wheels 58 and 5 supported by shaft bearings 56 and 57 provided on the main body 2 to face each other
It is screwed together with 9. In addition, the worm wheels 58 and 59 mesh with worms 62 and 63 provided on shafts 60 and 61 supported horizontally on the main body 1, respectively, to transmit the rotation of the worms 62 and 63 to the worm wheels 58 and 59, and are screwed into the worm wheels. The shafts 54 and 55 are arranged to move up and down. Main body 2
Timing gears 64 and 65 are provided facing each other on the shafts 60 and 61 that are horizontally mounted on the body, and are connected to each other by a timing belt 66 that meshes with the shafts. Rotation is transmitted to the shafts 60 and 61 by meshing gears 68.

Operating pieces 69 and 70 are attached to the lower surface of both left and right ends of the board 1, and a sensor 71 detects the center position of the board 1 and a limit switch 72 detects the board's raised position and lowered position.
, 73, and when the board 1 rises, the limit switch 7
2 to detect the limit switch 73 when lowered.
is detected and controlled.

The present invention has the above-mentioned structure, and when the observation part of the image being projected on the screen is projected on the upper or lower part of the screen and cannot be observed sufficiently, in order to move it to the center part and observe it sufficiently, the control panel has an elevating part. When the push button or the lowering push button is pressed, the motor 67 is driven and rotates the left and right shafts 60, 61 via the timing belt 66, and the worms 62, 63 provided on the shafts 60, 61 are rotated by the worm wheels 58, 59. The shafts 54 and 55 are raised or lowered by the rotation of the worm wheels 58 and 59.

By raising and lowering these shafts 54 and 55, the substrate 1 that is integrated with the shafts 54 and 55 is raised and lowered. In addition, as the rotating prism 3 arranged on the substrate 1 rises and falls at the same time, the irradiation position of the photographic film F traveling between the rotating prism 3 and the condensing lens is shifted, and the image projected on the screen is moved. In either case, the observation portion can be observed at the center of the screen. Also, for raising and lowering, actuating pieces 69 and 70 provided on the board 1 actuate the limit switch 72 or 73 provided at the opposite position to control the drive of the motor 67, and return the board 1 to the normal central position. In this case, when a push button provided on the control panel is pressed and the motor 67 is driven in the manner described above, the sensor 71 that detects the center position is activated to control the drive. As described above, the present invention is characterized in that even during projection on the screen, the image portion to be subjected to diagnostic observation can be moved to the central portion using a push button, thereby making it possible to perform sufficiently accurate diagnostic observation.

[Brief explanation of drawings]

The drawings show an embodiment of an image vertical adjustment device in a projection apparatus according to the present invention, and FIG. 1 is a longitudinal sectional front view, and FIG. 2 is a partial longitudinal sectional side view. 1...Substrate, 2...Main body, 3...Rotating prism, 4...Condensing lens, 5...
・Reflector, 6...Light source halogen lamp, 7...
...Main lens, 8...Magnifying lens, 10.
...Take-up reel, 11...Rewind reel,
12, 13... Bearing body, 14, 15... Rotating member, 16, 17... Flange, 18, 19
・・Window hole, 20, 21... Pooh 18 22, 23
...Shaft, 25... Bearing, 26, 27...
...shaft, 28, 29... clamping body, 30...
... shaft bearing body, 32, 33 ... pulley l8 34
, 35...belt, 36...window hole, 37...
...Shaft bearing body, 38...Hollow shaft, 39...
Shaft, 40...Socket plate, 41...Sector, 42...
...Frame, 43...Operation axis, 44...
Gear, 45...1 blade, 46...Photoelectric detector, 47...Sprocket, 48, 49...
...Pulley, 50...Belt, 51...
・Drive pulley l852...Belt, 53...
・Motor, 54, 55...Axis, 54'', 55''・
...screw, 56,57... shaft bearing, 58,5
9... Warm foil, 60, 61...
Shaft, 62, 63... Worm, 64, 65...
Timing gear, 66...Timing belt, 67
...Motor, 68...Timing gear,
69, 70... Actuation piece, 71... Sensor,
72, 73...Limit switch.

Claims (1)

[Claims] 1 A 16-sided rotating prism, a photographic film winding reel and a rewinding reel are arranged on the left and right sides of this rotating prism, and on the front side facing the rotating prism, a condensing lens and a light source are installed with the film in between, and also a rotating prism. In a projection device in which a main lens and a magnifying lens are disposed on the back side of the rotary prism, an image of a film passing between a rotary prism and a condensing lens can be enlarged and projected onto a screen through the rotary prism for diagnostic observation. The board with the condensing lens, light source, and magnifying mechanism has screw shafts attached facing downward on the left and right sides of the bottom surface, and each of these screw shafts is a worm that is pivotally supported on a shaft bearing provided inside the main body. The wheels are screwed together, and each worm wheel meshes with a worm provided on each shaft supported horizontally on the main body at intervals, and each shaft mounted horizontally on the main body is connected by a belt driven by a motor. Furthermore, actuating pieces are attached to both ends of the board, and a sensor that detects the board at the center position and a limit switch that detects the board's raised and lowered positions are installed on the main body opposite to the operating pieces. Image vertical adjustment device.