DE20308390U1 - Hollow cylindrical bollard, includes internal light-emitting diodes on circuit strips surrounding support located at light exit openings - Google Patents

Abstract

The lighting unit (1) comprises numbers of LEDs on a flexible strip circuit (10). Each of these strips at least partly surrounds a support (12). This is located inside the bollard (3, 14) at the height of the light exit openings (16).

Description

Bollard with lighting device

The invention relates to a hollow cylindrical bollard with
a lighting device arranged inside the bollard
and light exit openings in the side walls
of the bollard.

Bollards, sometimes also called barrier posts, serve

for the delimitation and/or identification of

Production areas, production lines, pedestrian areas,

Parking lots, security areas, green spaces, roadways

or the like. Bollards are also partially part of barriers, which consist of the bollards and horizontal connecting elements
between the bollards. Horizontal connecting elements include barrier chains,

bands or beacons come into consideration.

Due to their function, bollards represent an intended
It is an obstacle that is difficult for road users to perceive, particularly in poor visibility conditions, and is therefore a danger. To counteract this danger, illuminated bollards have already been developed, such as
that they are also visible in the dark:

For example, DE 43 22 509 C1 discloses a lighting device comprising a translucent housing and a unit made up of at least one solar cell, at least one light-emitting diode, a battery and an electronic circuit. The electronic circuit has a light/dark detection system which, when light is detected, causes the battery to be charged by the solar cell and, when dark is detected, causes the light-emitting diode to pulse by means of the battery. The lighting device is attached to a support, for example to the upper end of a parking post, by means of a screw connection.

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DE 42 15 321 A1 describes an optical barrier made of bollards and horizontal barrier elements that connect the bollards to one another. Illuminated zones are incorporated into the mechanically resilient, solid horizontal barrier elements. The lamps in the illuminated zones are supplied with power via the bollards.

DE 201 07 644 Ul discloses a bollard on whose upper end a closing element known as a head is placed. The head is made of transparent material so that the light from a lighting device arranged inside the bollard can emerge from this head.

GB 21 94 268 A discloses a portable hazard warning device for roads, the vertical posts of which are partially made of translucent material. A battery-operated lighting device is arranged inside the posts behind the translucent material so that the warning device can be more easily recognized.

DE 42 01 315 C2 discloses an optical barrier made of bollards equipped with lighting devices and of horizontal guy elements that connect the bollards to one another. The side walls of the bollards are provided with light passage openings made of translucent material that form light zones. The guy elements are designed as translucent plastic tubes in which optical fibers run. Both the light zones in the bollard 0 and the optical fibers are supplied by a central lighting device housed in the respective bollard. The lighting device consists of an electrical block housed in the base of the bollard that ensures the power supply to the halogen lamp.

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Finally, DE 197 54 413 A1 discloses a barrier device with a bollard that can be lowered into a recess, in which lighting devices are provided on the circumference of the bollard tube adjacent to the bollard cover. The light exits from the bollard preferably through one or more transmissive panes made of plastic or glass. This pane can be located between the bollard cover and the actual bollard tube or on the circumference of the bollard tube adjacent to the bollard cover.

Based on this prior art, the invention is based on the object of creating a low-maintenance bollard having a lighting device, the lighting device of which has a low energy requirement and is effectively protected against external influences.

This object is achieved according to the invention in that the lighting device comprises a plurality of light-emitting diodes which are arranged on at least one flexible circuit board strip, that each circuit board strip at least partially surrounds a support body and that the support body is arranged in the interior of the bollard at the level of the light exit openings.

The ease of maintenance of the bollard according to the invention results from the combination of long-lasting LEDs and their combination on flexible circuit board strips that at least partially surround a support body. Due to the long service life of LEDs, practically no maintenance work is required. Should maintenance of the lighting device nevertheless be required in exceptional cases, the support body carrying all LEDs on circuit board strips makes it easier to remove the entire lighting device from the inside of the hollow cylindrical bollard. The support

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body can be made of hardwood, metal or plastic material, for example.

The flexible circuit board strip adapts to different shapes of the support body. The hollow cylindrical bollard, which preferably corresponds to the shape of the support body, can also have different cross-sectional geometries, in particular a round, oval or polygonal cross-section. By arranging the support body inside the bollard at the level of the light exit opening, a weakening of the luminosity due to long light paths is avoided.

In an advantageous embodiment of the invention, the support body has a circumferential groove for receiving each circuit board strip. If the light exit openings are arranged in a ring shape on the side walls of a hollow cylindrical bollard with a circular cross-section, for example, the grooves preferably run concentrically thereto.

If a transparent, waterproof cover surrounds each circuit board strip, it is not absolutely necessary to use transparent material in or on the inside in front of the light exit openings. The required protection of the LEDs and the circuit board strips from moisture is already guaranteed by the cover. However, it is also possible for the light exit openings to be additionally filled or backed with a transparent material in order to completely prevent moisture from penetrating the interior of the bollard, for example to prevent corrosion damage.

In order to achieve the best possible radiation from the bollard with a given energy input, in an advantageous embodiment of the invention the light exit openings are aligned with the

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light-emitting diodes arranged on the circuit board strips, whereby the light exit openings can be arranged on one side or on all sides, in particular over the entire circumference of the bollard. In order to achieve uniform radiation and a harmonious image of the bollard, the light exit openings are preferably arranged evenly over the entire circumference of the bollard in at least one row.

If the bollard has a bollard cover to which the support body is attached, the already rare maintenance work can be further simplified - by removing the bollard cover, the entire lighting device, i.e. the support body with the circuit board strips and the sheathing tubes, can be removed.
15

The support body can be attached to the bollard cover in a structurally simple manner if the bollard cover has a pipe section on its side facing the inside of the bollard, into which the support body is inserted. In a further embodiment of the invention, the pipe section has a circumferential,

horizontal fixing groove that is aligned with threaded holes in the side walls of the bollard. Grub screws inserted into the threaded holes engage in the fixing groove and hold the bollard cover in position. 25

Due to the low energy consumption of light-emitting diodes, it is possible in one embodiment of the invention to ensure an external energy supply as a substitute or in addition by means of solar cells. The solar cells can be arranged, for example, on the bollard cover. However, it is also possible to arrange the solar cells in another location, for example next to the bollard or on its side walls.

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The invention is explained in more detail below using an embodiment of a circular cylindrical bollard.

Show it
5

Figure 1 is a perspective exploded view of the bollard according to the invention,

Figure 2 is a perspective view of the lighting device of the bollard according to Figure 1,

Figure 3 (A) is a vertical section through a

bollard according to the invention according to Figure 1 along the

Line A-A in Figure 3 (B), 15

Figure 3 (B) shows a cross section through an inventive

Bollard according to Figure 1 along the line B - B in

Figure 3 (A),

Figure 4 (A) shows a section through a device according to the invention

Ground anchored bollards and

Figure 4 (B) a side view of the bollard according to the invention

according to Figure 4 (A).
25

The bollard according to the invention essentially consists of a round tube 3, which is closed at the front by a bollard cover 14, and a lighting device 1 arranged inside the tube 3 (cf. Figures 2, 4).

0 The lighting device 1 is formed by a circular cylindrical support body 12 with three circumferential grooves 18. Each groove 18 accommodates a circuit board strip 10 surrounded by a sheathing tube 11 with light-emitting diodes arranged thereon. The ends of the sheathing tube 10 are connected via a closure 20, in the embodiment in the form of a

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Sleeve (see Figures 2, 3 (B)), which consists of a short piece of hose into whose inner diameter the ends of the sheath hose are inserted.
5

As can be seen in particular from Figure 3 (A), each light-emitting diode is aligned with a light exit opening 16. The light exit openings 16 are located on circles running concentrically to the circumferential grooves 18 on the side walls of the tube 3 of the bollard.

The power supply of the LEDs is provided via conductor tracks (not shown in the drawings) on the circuit board strips 10 and cables 19 extending from the circuit board strips 10, which are guided from the circuit board strips 10 to a transformer 2 via a vertically running groove 17 in the support body 12. A power supply line 4 leading to the transformer 2 can be seen in Figures 1 and 4.

0 Instead of an external power supply of the LEDs via the transformer 2, it is also possible, for example, to connect the LEDs to a battery-buffered solar power supply.

To protect against the effects of the weather, three sheathing tubes 11 surround the three circuit board strips 10 with the light-emitting diodes arranged thereon. The sheathing tubes 11 can be seen particularly clearly in the longitudinal section according to Figure 3 (A) and in the perspective view according to Figure 2.

A pipe section 15 with a circumferential fixing groove 15a is welded to the bollard cover 14 on the side facing the inside of the bollard. The fixing groove 15a is aligned with threaded holes in the side walls of the bollard. The threaded holes

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The holes serve to accommodate grub screws 16, which are screwed into the tube 3 after the bollard cover 14 has been inserted, until the screw tip engages in the circumferential fixing groove. The support body 12 is press-fitted into the tube section 15.

The anchoring of the bollard according to the invention in the ground is made clear by looking at Figures 1 and 4 (A) together. A receiving tube 6 is inserted into a foundation in the ground, the inner diameter of which is slightly larger than the outer diameter of the tube 3 of the bollard. A guide slot 9 extends vertically downwards from the upper edge of the receiving tube 6, into which a guide pin 8 arranged on the tube 3 engages. The tube 3 has a cutout below the guide pin 8, through which the power supply line 4 is led from the tube 3 through the longitudinal slot 9 into an empty tube 7 to a voltage source (not shown).

A flange plate 5 welded to the pipe 3 (see Figure 4) covers the upper edge of the receiving pipe 6. The seal between the underside of the flange plate 5 and the ground surface is achieved, for example, by a pre-compressed, UV-resistant joint sealing tape. The flange plate 5 is screwed to the foundation.

Should maintenance work be required on the bollard according to the invention in exceptional circumstances, it is only necessary to loosen the grub screws 16 (see Figure 3) and remove the bollard cover 14 with the lighting device attached to it, e.g. to replace a circuit board strip 10. In the interest of easy replacement of the circuit board strips, the cables 19 are preferably connected to the transformer 2 by means of clamp connections.

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The complete arrangement of the lighting device inside the bollard effectively protects it from external influences.

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5 List of reference symbols:

Lighting equipment 1 transformer 2 Pipe 3 Power supply line 4 Flange plate 5 Receiving tube 6 Empty pipe 7 Guide &zgr; ap f en 8th Guide slot 9 PCB strips 10 Sheath tube 11 Support body 12 Light exit opening 13 Bollard cover 14 Pipe section 15 Fixing groove 15A Grub screw 16 Groove 17 circumferential groove 18 Cable 19 Closure 20

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02.doc 28 May 2003 Page 10 of 12

Claims (11)

1. Hollow cylindrical bollard with a lighting device arranged inside the bollard and light exit openings in the side walls of the bollard, characterized in that - the lighting device ( 1 ) comprises several light-emitting diodes which are arranged on at least one flexible circuit board strip ( 10 ), - each circuit board strip ( 10 ) at least partially surrounds a support body ( 12 ) and - the support body ( 12 ) is arranged inside the bollard ( 3 , 14 ) at the level of the light exit openings ( 16 ). 2. Bollard according to claim 1, characterized in that the support body ( 12 ) has a circumferential groove ( 18 ) for receiving each circuit board strip ( 10 ). 3. Bollard according to claim 1 or 2, characterized in that a transparent, water-impermeable cover ( 11 ) surrounds each plate strip ( 10 ). 4. Bollard according to one of claims 1 to 3, characterized in that the light exit openings ( 13 ) are aligned with the light-emitting diodes arranged on the circuit board strips ( 10 ). 5. Bollard according to one of claims 1 to 4, characterized in that the light exit openings ( 13 ) are arranged over the entire circumference of the bollard. 6. Bollard according to one of claims 1 to 5, characterized in that the light exit openings ( 13 ) are arranged evenly over the entire circumference of the bollard. 7. Bollard according to one of claims 1 to 6, characterized in that the light exit openings ( 13 ) are filled and/or backed with a transparent material. 8. Bollard according to one of claims 1 to 7, characterized in that the bollard has a bollard cover ( 14 ) to which the support body ( 12 ) is fastened. 9. Bollard according to one of claims 1 to 8, characterized in that the bollard cover ( 14 ) has on its side facing the interior of the bollard a pipe section ( 15 ) with a fixing groove ( 15A ) which is aligned with threaded holes in the side walls of the bollard for receiving screws, in particular grub screws ( 16 ). 10. Bollard according to one of claims 1 to 9, characterized in that the energy supply of the light-emitting diodes is provided by means of solar cells. 11. Bollard according to claim 10, characterized in that at least one solar cell is arranged on the bollard cover.