Signal column

Abstract

A signal column includes a rod-shaped, transparent housing, inside of which a rod-shaped signal generator is arranged. At least one light distribution element is arranged in the housing between the signal generator and the transparent housing, wherein the light distribution element directs light evenly from light sources of the signal generator to the housing wall.

Claims

1. Signal column, comprising: a rod-shaped transparent housing comprising a housing wall, wherein the housing is a prism having a polygonal base with even or bent side surfaces that form the housing wall, a rod-shaped signal generator arranged inside the transparent housing and comprising a plurality of LED columns formed by RGB LEDs arranged lying on top of each other on elongated printed circuit board elements that are flexibly connected to each other and that are positioned vertically inside the housing, the RGB LEDs radiating in a direction of the side surfaces of the prism, a light distribution foil arranged in the transparent housing between said signal generator and said transparent housing, the light distribution foil extending vertically in the housing and comprising a plurality of light dispersing bodies, and a fastening element protruding into the interior of the housing and comprising a projecting nib forming a first groove and a second groove disposed opposite from the first groove, the projecting nib extending along the length of the housing, wherein said light dispersing bodies direct light emitted from the RGB LEDs of the signal generator to the housing wall in a light pattern of a series of stacked planes one above the other, wherein the first groove of the projecting nib receives a peripheral edge of the light distribution foil at a first foil end of the light distribution foil along the length of the light distribution foil in a mating manner so that the light distribution foil is attached at an inside of the housing wall, and wherein the light distribution foil substantially follows the shape of the housing wall.

2. Signal column according to claim 1, further comprising a single-drop digital communication interface for small sensors and actuators (SDCI).

3. Signal column according to claim 2, wherein an energy supply of the signal column is realized via the single-drop digital communication interface for small sensors and actuators (SDCI).

4. Signal column according to claim 1, wherein the prism has a triangular base.

5. Signal column according to claim 1, wherein the RGB LEDs can be controlled by a control circuit in terms of their illumination time, their illumination duration, their color and their brightness.

6. Signal column according to claim 1, wherein said plurality of light dispersing bodies comprises a plurality of microlens surfaces.

7. Signal column according to claim 1, wherein the second groove of the projecting nib receives a peripheral edge of the light distribution foil at a second foil end of the light distribution foil along the length of the light distribution foil in a mating manner.

8. Signal column according to claim 1, further comprising a plurality of the light distribution foils and a plurality of the fastening elements, wherein the grooves of the fastening elements receive a respective peripheral edge of the light distribution foils at a respective foil end of the light distribution foils along the length of the light distribution foil in a mating manner so that the light distribution foils are attached at the inside of the housing wall, and wherein the light distribution foils substantially follow the shape of the housing wall.

9. A system, comprising: a signal column, comprising: a rod-shaped transparent housing comprising a housing wall, wherein the housing is a prism having a polygonal base with even or bent side surfaces that form the housing wall, a rod-shaped signal generator arranged inside the transparent housing and comprising a plurality of LED columns formed by RGB LEDs arranged lying on top of each other on elongated printed circuit board elements that are flexibly connected to each other and that are positioned vertically inside the housing, the RGB LEDs radiating in a direction of the side surfaces of the prism, a light distribution foil arranged in the housing between said signal generator and said transparent housing, the light distribution foil extending vertically in the housing and comprising a plurality of light dispersing bodies, and a fastening element protruding into the interior of the housing and comprising a projecting nib forming a first groove and a second groove disposed opposite from the first groove, the projecting nib extending along the length of the housing; a master assembly; and a single-drop digital communication interface for small sensors and actuators (SDCI), the single-drop digital communication interface connecting the signal column to the master assembly; wherein said light dispersing bodies direct light emitted from the RGB LEDs of the signal generator to the housing wall in a light pattern of a series of stacked planes one above the other; wherein the first groove of the projecting nib receives a peripheral edge of the light distribution foil at a first foil end of the light distribution foil along the length of the light distribution foil in a mating manner so that the light distribution foil is attached at an inside of the housing wall; and wherein the light distribution foil substantially follows the shape of the housing wall.

10. The system according to claim 9, wherein said plurality of light dispersing bodies comprises a plurality of microlens surfaces.

Description

SHORT DESCRIPTION OF THE DRAWINGS

(1) Embodiments of the invention are shown in the drawings and are explained in more detail in the following description.

(2) Herein:

(3) FIG. 1 shows an isometric rendering of a signal column according to the invention;

(4) FIG. 2 shows a sectional view through the housing of the signal column shown in FIG. 1, and

(5) FIG. 3 shows an isometric rendering of the signal column shown in FIG. 1, partly broken away in order to convey its structure more clearly.

EMBODIMENTS OF THE INVENTION

(6) A signal light 100, shown in FIG. 1, comprises a rod-shaped transparent housing, which is formed as a prism with a substantially triangular base and bent side surfaces 105, 106 and 107 that form the housing wall. The housing comprises a socket element 110 as well as a cover element 120, which can be made of plastic or metal material, for example. A connector element 112, e.g. for electric leads, including a single-drop communication interface 112a for small sensors and actuators (SDCI) is provided in the socket element 110. The socket element further serves for attaching the signal column to a machine, and the like. The connector element 112 comprises an IO link interface or an IO link adapter, for example, in order to attach the signal column to the master assembly 190. Not only the control signals are transmitted via this IO link connection, but it also serves in a very advantageous manner for supplying energy to the signal column.

(7) Together with the housing wall that is formed as a single part and comprises the bent side surfaces 105, 106, 107, a fastening element is arranged inside the housing, for example at the transition of two side surfaces 105 and 107, namely in the form of a projection comprising nibs 170 which, together with the housing walls 107, 105, respectively form grooves 171, 172 inside of which the ends of a light distributor foil (to be described below) are received.

(8) The structure of the signal column is described in more detail in connection with FIG. 3, with FIG. 3 showing the signal column illustrated in FIG. 1 in a partially broken away rendering. As can be seen from FIG. 3, the light distributor foil 200 is arranged inside the housing in such a manner that it substantially follows the housing walls, or, to put it differently, that it extends along the housing walls. The foil is either arranged inside the housing as a one-piece foil and is correspondingly bent, or individual foil elements are provided through flexible connecting elements. Here, it has to be stressed that in principle the fastening element 170 described above can also be provided at each transition of the curved side surfaces, that is, also at the transition between the side surfaces 105 and 106, as well as 106 and 107 (see FIG. 2). In this latter case, individual foil elements can correspondingly be attached to the interior of the housing wall 105, 106, 107. As for the foil itself, it can e.g. be an IMOS Lichtverteilfolie F002 by IMOS Gubela GmbH, Kniebisstr. 1, 77871 Renchen, as it follows from the technical data sheet Nr. 74.02.

(9) Inside the housing, a rod-shaped signal generator 300 is arranged. The rod-shaped signal generator can be formed by three elongated printed circuit boards 310, 320, 330, for example, which are connected to each other via flexible connections 305 in the manner of a triangular-shaped prism. At the outsides of the printed circuit boards, RGB LEDs 400 are arranged lying on top of each other, respectively, so that each printed circuit board 310, 320, 330 forms an LED column. The light emitted by these RGB LEDs is in a plane-like manner guided through the light distributor foil 200 to the transparent housing sides. Through this horizontal light guiding, a light pattern is facilitated which is lying one above the other in a stacked-like manner in which the light is directed in a series of stacked planes 401. The RGB LEDs can be controlled via a control circuit (which is not shown) with regard to their illumination time, meaning the time illumination starts and the time illumination ends, their illumination duration, their color and their brightness. In this way, practically any desired number of different light patterns can be achieved in a purely electronic manner. Thus, a per se known signal light can be realized with three colors green, yellow, red, arranged one above the other, for example; or a blue light generating an rotating light by an overlapping serial connection of the different light-emitting diodes, or a blinking light, or a rising and falling light pattern, and the like. As has already been mentioned above, control is performed here via an IO link interface or an IO link adapter, that is, in a standardized manner. Hereby, not only the versatility of the application possibilities of the signal column is increased, but also the wiring effort and thus the possible sources of disturbance are considerably reduced.

(10) The great advantage is that the different light elements do not have to be mechanically connected to each other, which is very advantageous particularly with regard to density and interference resistance. Moreover, a variety of different light figures can be generated.