DE3221309A1 - Pivoting floor for a planetarium - Google Patents

Description

-4- Heidenheim (Brenz) - ■ ι 5 Carl Zeiss, 7920 10 Planetariums 15th Swiveling floor for 20th 25th 30th 1 P 961 35

3221303

Pivoting floor for planetariums

The invention relates to a floor for a planetarium. !

In planetariums is the floor on which the chairs of the visitors' stand, usually arranged horizontally. Otherwise, since the j

■ "ι

entire celestial hemisphere is shown, part of the visitors above the j Sit on the horizon, which would seem unnatural. j

The. However, the horizontal arrangement of the chairs has disadvantages with slide and

Effect shows, as the visitors then sit on the seat further forward

rows obstruct the view. In this case, a sloping floor is we- \

much cheaper. This is especially true for projectors with a!

large angle of view. i

I.

There is often a desire to be in one and the same performance between ' To be able to switch planetarium show and large-angle projection.

The present invention is therefore based on the object of creating a floor j for planetariums which changes between the horizontal and an angle of 45 ° to it even during a performance
lets, with the chairs for the visitors in their horizontal position lead-j

ben. ■ j

The object set is achieved according to the invention in that the floor ι is pivotable about a horizontal axis of rotation that perpendicular under this I

Axis of rotation oine second axis of rotation is arranged around which a framework i is pivotable that the framework is connected to the floor by vertical struts i and swivel joints like a parallelogram, and that the chairs

and chair platforms are firmly connected to the vertical struts.

In a preferred embodiment, the slope of the floor is through
modified a lifting mechanism that is operated hydraulically, pneumatically or electrically mechanically.

The floor can be moved either as a whole or in parts. In
In a particularly useful embodiment, the bottom consists of two

-JiT-

almost semicircular, swiveling parts that are connected by a fixed central aisle for access and exit to the seats. In the center of the aisle, the projection device for the planetarium is arranged so that it can be lowered.
5

The chairs for the visitors can all face one way, they however, they can also stand in different directions, especially if the floor is divided into several areas, the inclination of which is independent ι can be changed to each other. ;

The invention is illustrated below with reference to one shown in FIGS illustrated embodiment explained in more detail. Show:

Fig. 1 is a section through a planetarium, the floor in the Position for a planetarium show;

Fig. 2 shows the same section through the planetarium, the floor in is the position for wide angle projection, and

i Fig. 3 is a section through the floor structure, the fastening

which shows ¹ chairs and chair platforms.

In Fig. 1, 11 denotes the planetarium dome on which the Constellations imaged by the planetarium projection device 12 25 become. The chairs of the visitors are almost semicircular on two formed bottom parts 13 and 16 arranged, which to perpendicular to Axes of rotation 14 and 17 extending in the plane of the drawing can be pivoted. For a planetarium show, the bottom parts 13 and 16 are through the lifting devices 15 and 18 held in a horizontal position.

In Figure 2, the relationships for the Großwinkelpro jection are shown: the bottom parts 13 and 16 have been pivoted by the lifting devices 15 and 18 so that the rows of chairs ascending one behind the other are arranged. The projection device 12 for the planetarium is lowered by the lifting device 19 and by a base plate 21 been covered. As a result, for example, a continuous central aisle between the door 22 and a not shown in the drawing, on the

opposite side arranged door can be produced. For the
The device 23 is used for large-angle projection. I.

Figure 3 shows the structural design of a floor part with the fastening, 5stigung of the chairs and chair platforms. Under the perpendicular chenebene for newspaper] extending pivot axis 17 for the base 16 is perpendicular one! second axis of rotation 31 is arranged, which is also perpendicular to the plane of the drawing '. The framework 33 is pivotable about this second axis of rotation 31; which is connected to the floor 16 by the struts 37. These struts ' · j 10 37 are both on the floor 16 and on the framework 33 with swivel joints 38
attached so that there is a parallelogram-like connection through! which at all inclinations of the floor 16 framework 33 and floor 16 parallel; IeI to each other and the struts 37 remain perpendicular .; As a result, the chairs 39 and chair platforms 40 'attached to the struts 37 also remain in their horizontal position regardless of the inclination of the base plate 16;

. i

Location.

By a suitable covering of the struts 37 including the Leh-; The chairs allow larger spaces between them and the
Avoid chair platforms 40. This also applies to all other positions

where parts move against each other. The entry and exit to the; 'j

j chairs are possible regardless of the inclination of the floor. j

y y

The lifting device 18 is either via a slide (not shown) y y

25 rail connected to the framework 33 or by a swivel joint. In the i in the latter case, the lifting device is also connected to the foundation by a ι Swivel joint connected.

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Claims (5)

Claims M.) Floor for a planetarium, characterized in that the floor (16) is pivotable about a horizontal axis of rotation (17) that a second axis of rotation (31) is arranged vertically below this axis of rotation (17) is around which a framework (33) is pivotable that the framework (33) with the floor (16) by vertical struts (37) and swivel joints (38) is connected like a parallelogram, and that the chairs (39) and chair platforms (40) are firmly connected to the vertical struts (37) are. 2. Floor according to claim 1, characterized in that for the pivoting a hydraulic, pneumatic or electro-mechanical lifting mechanism (18) is provided. 3. Floor according to claim 1 or 2, characterized in that the floor as a whole, divided or partially pivotable. 4. Floor according to claim 3, characterized in that a in the center Area is excluded from the pivoting of the floor and that in this area the projection device (12) for the planetarium is arranged. 5. Floor according to claim 4, characterized in that the projection device is retractable for the planetarium.