JPS60176371A - Additional device for image screen equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Description: FIELD OF THE INVENTION The present invention relates to a video screen having an additional optical device, such as an additional magnifying glass, arranged at an adjustable distance in front of the video screen and attached to the video screen device. The present invention relates to an additional device for a monitoring device of a device such as a television system or a data indicating device.

DESCRIPTION OF THE PRIOR ART The magnifying lens, i.e. the aforementioned additional device configured in the form of a so-called Fresnel lens and placed in front of the picture tube arrangement, optically magnifies and stabilizes the image formed on the picture tube. The problem is that an image with almost no wobble can be obtained. For optimal adjustment of additional equipment,
The additional device should be adjustable or movable relative to the plane of the video screen. In the known additional device of the type mentioned above (Registered Utility Model Registration No. 1a9 of the Federal Republic of Germany)
a9ai specification). An additional optical system or an additional magnifying glass is supported in an L-shaped frame member, which is connected to a support plate inserted and locked below the video screen device. In order to adjust the distance between the additional optics and the video screen, it is necessary to shift or slightly lift the video screen device each time such adjustment is made.

This is cumbersome and makes stable and accurate adjustment extremely difficult. Also, it cannot be used for fixedly adjusted video screen devices. In other additional devices (see German Utility Model Registration No. 19230 Cow No. 7), the additional optical device is mounted height-adjustably on an L-shaped frame part, in which case both frame parts It is movably mounted on a holding member which is itself shaped like a par or a saucer. The holding member is attached to the top surface of the video screen device by suction. In such known devices, the additional optics are held somewhat precariously and, for example, due to such precarious support, it is cumbersome to adjust to the correct spacing in front of the video screen. All known devices have the disadvantage that light can enter from outside, since there is more or less a distance between the additional optics and the video screen. As a result, optical properties or phenomena are significantly impaired.

OBJECTS OF THE INVENTION The object of the present invention is to simplify the adjustment of the position of the additional optical device in front of the image screen, to obtain a stable position of the additional device, and to achieve optimal adjustment of the image enlargement device as a whole, and to achieve a stable position of the additional optical device in front of the image screen. It is an object of the present invention to provide an additional device of the type mentioned at the outset, which has improved optical properties and phenomena with regard to clear and visually reasonable images.

According to the present invention, this problem is solved by locking the frame supporting the additional optical system to the video screen device using a base member that at least partially surrounds the video screen, and also locking the frame supporting the additional optical system to the video screen device. The solution is to have a connected supporting member, which is adjustable and movable relative to the base member and the video screen by means of slidingly interconnected guide members. If a slide guide is provided between the base member and the support member, the distance between the additional optical system and the video screen can be adjusted steplessly and precisely by simply pulling out or pushing it in. Such an adjustment process ensures that a stable position of the additional optical system is maintained, in which case the base member is fixedly connected to the large surface of the video screen device in the manner described below, in which case the base member is fixedly connected to the large surface of the video screen device in the manner described below. The conventional method of loosening and tightening the connecting members is no longer necessary.

According to an advantageous embodiment of the invention, the base member is constructed in the form of a frame and is provided with frame parts movably connected to one another and adaptable to different video screen devices.

The additional device according to the invention can thereby be used generally for all video screen devices with different video screen sizes.

According to an advantageous embodiment of the invention, the guide element and/or the frame part consist of tubular parts which are telescopically connected to one another in a tubular manner and are movable with respect to one another. In this case, it is advantageous if the guide element is connected on the one hand to the base element and on the other hand to the support element by means of a link connection. In this case, the additional optical systems are placed at different intervals, taking into account the operating position and the visual acuity of the person in front of the video screen device.
It can also be easily adjusted to freely selectable pivoting positions relative to the vertical line. In this case, it is advantageous to provide guide elements at all frame corners in order to connect the base element and the support element. This makes the position of the additional optical system very stable. However, it is also sufficient to provide less than four guide elements, for example three or two guide elements uniformly distributed around the base element.

In an advantageous embodiment of the invention, at least one, preferably all frame sides between the base element and the support element are covered with an enveloping which can be enlarged and reduced depending on the spacing between these elements. are doing. This method prevents external light from penetrating the intermediate portion between the additional optics and the video screen and disturbing the optical properties.

The sheath can be a flexible sheath made of an elastically extensible material, for example a rubber-like or bellows-like material, or it can be formed from a removable layered element. In the last-mentioned case, the component, for example made of a plastic strip, which is itself layered, can be configured to be movable both perpendicular and parallel to the plane of the video screen. Even in the case of such a jacket, it is possible to change the size of the base member.

Description of examples The invention will now be explained with reference to preferred embodiments shown in the drawings.

FIG. 1 shows a route diagram of a video screen device 1, for example a data indicating device, which has a video screen 2 or a monitoring device on the front side surrounded by a video screen flange 3. On such a front surface or the above-mentioned video screen flange 3, the device frame 5 itself consisting of a frame 5 includes a frame-shaped base member 6, a frame-shaped support member 7 having a relatively large width, and these members 6. and 7, and are composed of a total of four guide parts 10 which interconnect the base member 6 and the supporting member 7, in which case the base member 6 is directly connected to the video screen flange. 3 , and still on the support member 7 , an additional optical system 9 , for example in the form of a magnifying glass with a large surface, is held. FIG. 2 shows the aforementioned additional device 4 in detail. Basically, the rectangular foundation member 6 has four L
having frame portions 11 and l2 curved in the shape of a letter;
Two of the frame parts are formed in the same way. The frame part 11 has a tubular part,
Further, the frame portion 12 has a rod-shaped portion and a tubular portion. These parts are adapted to one another in such a way that the frame part 12 can be inserted into a tube opening in the frame part 11 and can be telescopically moved therein in a subtubular manner. Furthermore, since the frame part 12 is movably guided within the frame part 11, the size of the base member 6 can be adjusted according to the size of the video screen 2 of the corresponding device, so that the frame part can be moved in the direction of the arrow A ( The size of the video screen can be adapted by moving in the direction of the arrow B (vertical adjustment movement) and/or in the direction of the arrow B (horizontal adjustment movement). A link support device 13 is provided at each corner of the frame portions 11 and 12, and the aforementioned guide member 10 is connected to the link support device 13 by a link connection. Furthermore, this guide member 10 can be moved telescopically and retractably in the manner of two mutually immersed tubes.
4 and 15, that is, the tubular member 4 and the rod member 15 inserted therein. These members are movable relative to each other in the direction of the arrow C.

Further, the support member 7 that supports the additional optical system 9 has a rectangular shape, and has a much more basic shape than the base member 6 in the embodiment of the present invention.

The support member 7 has a link support device 16 at both corners,
A link bearing device 16 can be used to link the ends of the tubular section 14 .

It is clear that in this way, by moving the additional optical system 9 and the supporting member 7 relative to the base member 6, the distance between the additional optical system 9 and the video screen 2 can be varied, that is, the position can be adjusted. . As shown by the chain line in FIG. 1, the support member 7 with the additional optical system 9 can be adjusted and moved, for example, by an angle a with respect to the vertical line, so that a person in front of the monitoring device 2 can easily see it. I can do it.

As shown in FIG. 2, a handle 17 is provided on the pipe portion of the frame portion 11 provided opposite to each other, and a free end portion of a flexible band 18 with a stiff side-slipping is attached to the handle 17. , the additional device 4 can be locked by tightening the band 18 around the video screen device 1 in a horizontal position using a scuff 0 type tightening device 19 of known construction. The corners of the frame parts 11 and 12 can be provided with soft elastic supports 20 or with other locking elements, for example in the form of adhesive coupling elements. In order to prevent light from entering the space between the additional optical system 9 and the video screen 2 from the outside, in the embodiment shown in FIG. , covered with a jacket 21 of elastically stretchable material. In FIG. 1, for reasons of clarity, certain portions of the two frame sides are not covered with a jacket. The outer sheath 21 is configured to be able to follow the movement of the supporting member 7 and the optical system 9 even if the cross section of the base member 6 is expanded or reduced. The jacket can be made of a rubber-like material or a so-called extensible or stretchable material or a material having elasticity and having a bellows-like shape so that the surface can be expanded or contracted.

FIG. 3 shows another embodiment of the jacket in the additional device according to the invention. In this case, the outer sheath 22 is composed of a plurality of layered members 2.2a to 2.2a, each having a plurality of frame-shaped members having an increasing inner diameter and being superimposed on each other and movable together in the direction of the arrow.
It is composed of 22 c. In Figure 4, the jacket 2'
2' is made of a bellows-like stretchable material.

In the embodiments of FIGS. 5, 6 and 7, different ways of attaching additional devices to the video screen device l are shown. Further, FIG. 7 shows an attachment method using the flexible and lateral sliding stiffness band 18 shown in FIGS. 1 and 2. The strap 18 can then grip the video screen device 1 horizontally and be fastened to the housing of the video screen device. In the embodiment of FIG. 5, a total of four locking pins 5 or hanging bins are provided at the height of the corners of the video screen 2 on the video screen flange 3, preferably removably, e.g. The base part 6 of the additional device 4 with a corresponding counter-locking element can be secured and locked using the locking pin 23 or the suspension pin. ! , the locking pin 23 can be connected to the video screen device 1 by adhesive. Two other embodiments according to the invention are also shown in FIG. For example, in this case, on the upper side of the video screen flange 3, a suspension strap or suspension rail 2 is provided which is substantially C-shaped and has a suspension lug 24'.
4 can advantageously be removably mounted, in which case the hanging lug 2
Behind 4', the basic part of the additional device with a correspondingly opposite suspension part can be sealed and thus locked. The additional device can also be attached using an adhesive device 25 with two mutually adhesive adhesive N strips 025' and 25'', in which case the adhesive strip 25' is attached to the additional device and the adhesive strip f25
” is advantageously releasably attached to the video screen device. It is also of course possible to provide such an adhesive device on a number of sides of the video screen flange as well as on the front of the video screen device.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a video screen device equipped with an additional device according to the present invention, FIG. 2 is a perspective view showing the structure of the additional device in FIG. 1 in detail, and FIGS. 5 and 4 are according to the present invention. FIGS. 5, 6 and 7 are schematic perspective views illustrating a video screen device with an additional device according to another embodiment of the invention; FIGS. FIG. 1. Video screen device, 2-. Video screen, 3
...Video screen flange, cow...additional device, 5
... Frame, 6 Foundation member, ■... Support member, 9...
・Additional optical system, 10... Guide member, 13... Link support device, 21, 22. 22'・Outer cover, 23 Locking pin or suspension pin, 24... Suspension rail No. 8 Figure 4 figure

Claims (1)

[Claims] 1. An additional device for a video screen device having an additional optical device arranged at an adjustable distance in front of the video screen and attached to the video screen device, comprising: a video screen (2); A frame (5) supporting an additional optical system (9) is locked to the video screen device (1) using a base member (6) that at least partially surrounds the additional optical system (9) and is connected to the additional optical system (9). a supporting member (7) which is reciprocally connected to the base member (6) and the video screen (2) by means of slidingly interconnected guide members (10); An additional device for a video screen, which is adjustable and movable. 2. The base member (6) is constructed in the form of a frame and has frame parts (11, 12) movably connected to each other and adaptable to different video screening devices. Additional equipment as described in section. 3. Guide member (10) and/or straddling frame portion (1
1 and 12) which are telescopically connected to each other in a water subtube manner and constituted by mutually movable tubular portions. 4. Additional device according to claim 1, in which the guide element (1,0) is connected on the one hand to the base element (6) and on the other hand to the support element (7) by means of a link connection. 5. The additional device according to claim 2, wherein guide members (10) are provided at all corner portions of the frame for connecting the foundation part (6) and the support member (7). 6. Claim in which at least one frame side surface between the base member (6) and the support member (7) is coated with an enveloping (21, 22) that can be expanded and reduced in accordance with the spacing of said members. The additional device according to item 1 in the scope of . 7. The processing device according to claim 6, wherein the outer jacket (21) is made of an elastically stretchable material. 8. Addition device according to claim 6, wherein the jacket (22) is formed of layered members (22a to 22c) that can be fitted into each other. 9. The base member (6) of the frame (5) is attached to the video screen device (1) using a bevel strap (18) that surrounds the video screen device (1). Additional equipment as described. 10 A locking member (23) that attaches the foundation member (6) of the frame (5) to the video screen 7 runno (3)
2. The additional device according to claim 1, wherein the additional device is locked by using. 11 The foundation member (6) of the frame (5) is attached to the suspension rail (24L) attached to the video screen flange (3).
2. An additional device as claimed in claim 1, adapted to be locked within a sling. 12. The base member (6) of the frame (5) is attached using an adhesive device (
25) The additional device according to claim 1, which is attached to the video screen device (1) using a video screen device (1).