Column elements for a device for the vertical cultivation of plants

1. A device for a vertical cultivation of plants which are nourished by wetting the roots with an aqueous nutrient solution, the device comprising:

a column element having a modular structure adapted to be modularly constructed,

wherein a wall of the column element has a plurality of planting openings formed therein, in which the plants can be positioned such that their roots grow into an interior of the column element;

wherein the modular structure of the column element comprises a lid part, a base part and a plurality of wall rings between the lid part and the base part, wherein each wall ring is composed of a plurality of ring segments, in which the planting openings are formed, wherein the ring segments comprise a curved inner wall portion, a curved outer wall portion, wherein at least one of the ring segments comprises at least one of the planting openings, wherein the planting openings comprise an opening in the ring segment formed in an outward protrusion of the outer wall portion, wherein there is no enclosed space between the inner wall portion and outer wall portion of the ring segments, wherein each of the ring segments comprise a top edge, a bottom edge, a first side edge and a second side edge wherein the top edge is adapted to interconnect with the bottom edge of another ring segment, wherein the plurality of wall rings are arranged one on top of another wall ring such that the ring segments of a mutually adjoining wall ring are arranged offset with respect to one another, wherein the lid part is arranged on an end side on an uppermost wall ring and the base part is arranged on an end side on a lowermost wall ring, wherein the structure of the column element is fixed and stabilized with the aid of the lid part and the base part and without structural support internal to the wall rings; and

a guiding device which guides the aqueous nutrient solution to the planting opening is provided on the inner wall portion of the ring segment, wherein the guiding device comprises a V-shaped projection which extends inwardly from the inner wall portion of the ring segment.

2. The column element according to claim 1 , wherein the ring segments of the wall rings all have the same geometric dimensions.

3. The column element according to claim 1 , wherein each ring segment has a lateral edge region wherein the each ring segment is connected to one another in the lateral edge region.

4. The column element according to claim 3 , wherein the lateral edge regions of two adjacent ring segments are arranged in an overlapping manner and have holes, through which connection means, which fix the ring segments to one another, extend.

5. The column element according to claim 1 , wherein one lateral edge of the ring segments is formed as a tongue element and the other lateral edge of the ring segments is formed as a receiving groove so that the ring segments are connected by means of grooved and tongued connections to form the wall ring.

6. The column element according to claim 1 , wherein pin-like projections are formed in an edge region of the ring segments, said projections engaging into corresponding recesses in the edge region of an adjacent ring segment so that the ring segments of the wall ring are fixed with respect to one another in a vertical direction.

7. The column element according to claim 1 , wherein the lower edge of the ring segments is stepped back with respect to its curved wall surface so that, when two wall rings are being fitted together, the lower edge of an upper wall ring engages behind an upper edge of a lower wall ring.

8. The column element according to claim 1 , wherein projections and corresponding grooves for positioning and fixing respectively the ring segments or wall rings one above the other are formed in a lower and upper edge regions of the ring segments.

9. The column element according to claim 1 , wherein the ring segment comprises a holder for a plant, wherein the holder comprises a first wall portion pointing obliquely inwards, and a second wall portion pointing obliquely outwards, wherein the planting opening is arranged between the first and second wall portions.

10. The column element according to claim 9 , wherein the guiding device is arranged on an inner side of the first wall portion.

11. A device for a vertical cultivation of plants which are nourished by wetting the roots with an aqueous nutrient solution, the device comprising:

a column element having a modular structure adapted to be modularly constructed,

wherein a wall of the column element has a plurality of planting openings formed therein, in which plants can be positioned such that their roots grow into an interior of the column element;

wherein the modular structure of the column element comprises a lid part, a base part and a plurality of wall rings between the lid part and the base part, wherein each wall ring is composed of a plurality of ring segments, in which the planting openings are formed, wherein the ring segments comprise a guiding device which guides the aqueous nutrient solution to the planting openings, wherein the guiding device is disposed on an inner wall portion of the ring segment, wherein the guiding device comprises two projections which extend inwardly from the inner wall portion of the ring segment and form an at least a partial V-shape, wherein the lid part is arranged on an end side on an uppermost wall ring and the base part is arranged on an end side on a lowermost wall ring, wherein the structure of the column element is fixed and stabilized with the aid of the lid part and the base part and without structural support internal to the wall rings.