DE202009006868U1 - Rotating beacon, preferably rotating beacon - Google Patents

Abstract

Rundumleuchte, preferably rotating beacon, with a housing in which a base (12) is arranged with a light carrier, and one of a plurality of the light source associated light emitting diodes (14) formed light source, characterized in that the light emitting diodes (14) of one of several identical Lens parts (33) formed lens (15) are surrounded.

Description

The The invention relates to a beacon, preferably a beacon, according to the generic term of claim 1 or 7.

Flashing lights, especially flashing or flashing beacons used for information and especially for warning purposes. Mainly find Rotating beacons as so-called blue light for special purpose vehicles or as a yellow light for Work vehicles, such as construction vehicles, use. beacons but also become stationary used in the industrial sector, for example on machines.

Flashing lights, especially beacons, have a bright light source, for example, a gas discharge lamp. Optical flash or flashing signals Rotating mirrors or pulsed actuation of rotating beacons the light source generated. usual bright light sources, in particular gas discharge lamps or so-called Flash tubes, need relatively much electrical energy and dispose only one limited lifespan. That is why it is known, the conventional Replace bulbs also with all-round lights and rotating beacons by light emitting diodes (LEDs), and preferably a grid of several light-emitting diodes. Such Light-emitting diodes are characterized by their long life and consume little energy. It is problematic However, with light-emitting diodes, especially with beacons and rotating beacons required high light levels to produce, the conventional bulbs, especially gas discharge lamps, if possible to come close.

Of the Invention is based on the object, a beacon, preferably a Rundumkennleuchte to create, which has a light-emitting diodes high light intensity features.

A Rotating beacon to the solution This object has the features of claim 1. Accordingly, they are the light-emitting diodes formed by a plurality of lens parts Surrounded lens. The individual lens parts can be made more complex as one piece, in particular annular Lenses. The lens parts can even with complex profiled inner surfaces and also outside surfaces Plastic injection molding form. By dividing the lens into lens parts can the lens in such a way profiled interior and / or Have outer surfaces, that's a surprise high luminous efficiency of the LEDs and thus a light-intensive Rotating beacon lead.

Prefers it is intended to make the lens parts the same size. This is only one single mold for making all the lens parts of a lens required.

at a preferred embodiment of the rotating beacon invention Or rotating beacon is provided, which consists of the lens parts To provide composite lens with a non-circular cross-section. As a result, the cross section of the lens is not formed as a circular ring, but as a ring serving as a light exit surface outer surface and / or as light entry surface serving inner surface is not circular with respect to the cross section of the lens. The lens parts can be formed so that the compound lens only a non-circular Outer surface, but a circular inner surface or vice versa, only has a non-circular inner surface and a circular outer surface. Prefers are both the inner surface as well as the outer surface out of round designed so that the wall thickness Lens parts of the lens everywhere are about the same. The lens has through her non-round training over particularly good optical properties, resulting in a large luminous efficacy the light emitting diode forming the light source leads. In addition, through the non-round training The lens parts are designed to give you more space for the light-emitting diodes create.

at A preferred embodiment of the invention has the lens where the lens parts are assembled, over upright edges. The upright Edges limit parting lines by assembling the lens parts arise to the lens.

It is further provided that the lens parts are curved in cross section. The radius of the arched is preferred Lens parts larger than half the diameter of an enveloping circle, on which lie the edges where the lens parts touch. Thereby The centers of the lens parts lie between the edges on one separate enveloping circle with a smaller diameter. Due to the different sized envelopes, on the one hand the edges and on the other hand the centers of the Lens parts lie, the non-circular cross-section of the lens is made, wherein at least one side, preferably the outside, of the lens is curved everywhere and has no areas seen in cross-section flat areas.

Another Rundumleuchte or rotating beacon to solve the above object, which may also be a preferred embodiment of the previously described beacon, has the features of claim 7. This beacon, in particular rotating beacon, is characterized in that the LEDs are surrounded by a non-circular in cross-section lens. This lens can be and be designed in several parts. Due to the non-circular cross section, the lens receives particularly advantageous optical properties, which lead to the light emitted by the arranged in the grid LEDs distributed light and good light output is achieved, whereby the beacon according to the invention, in particular Rundumkennleuchte, despite the light source formed by light sources via a Luminous intensity which corresponds at least to the brightness of beacons and beacons with a conventional light source.

The Unround lens preferably has a plurality of upright edges, preferably parallel edges, up. As a result, the lens has a cross section of the circular shape deviating outer surface and / or inner surface.

The in cross-section non-circular lens of the beacon may consist of several preferably curved in cross-section Lens sections are formed, wherein the radius of the lens sections is larger as half the diameter of an enveloping circle on which the edges the lens are. This is the lens between adjacent edges flatter than the outer circle, on which all edges of the lens lie. It has been shown that Such a lens has particularly good optical properties and so to a high luminous efficacy of the votes of the light emitting diodes Light leads. In particular, the grid of a plurality of light emitting diodes The light points generated by the lens are modeled by the viewer the beacon or rotating beacon no longer than grid individual light points generated by the light-emitting diodes can be recognized.

Prefers the lens is composed of a plurality of preferably identical lens parts. Thereby let yourself especially simple according to the invention a non-circular cross-section forming a lens.

at A preferred embodiment of the invention is intended to assemble the lens parts at the edges of the non-round lens. At these edges disturb the seams at which corresponding end face adjacent Lens parts meet, not or at least not essential. Thereby wearing the invention provided Out of round formation of the lens substantially to the lens composed of several preferably identical lens parts to can. The Assemble the lens parts to the edges of the non-round lens leads as well to the fact that the viewer of the beacon, in particular beacon, it can not be seen that these are composed of lens parts is.

at a preferred development of all flashing lights for solution the object underlying the invention is to provide the lens, in particular the lens parts assembled to form the same, on at least one end face form-fitting with the base of the rotating beacon and / or a coupling agent. This can cause the lens precise position and permanent with other parts of the beacon, in particular of the socket. In case of several preferably the same lens parts assembled lenses serves the positive connection the lens parts with the socket and / or a coupling agent too to accurately position and hold the lens parts together, to make the lens out of it. The positive connection of the lens parts also leads with the socket and / or a separate coupling agent in that the lens parts are symmetrical and in the intended relative position to each other to the lens thus formed in all To give directions identical optical properties. Especially with lenses composed of several lens parts it is advantageous all lens parts on opposite Form-fitting ends connect to. This is especially useful on the lower end faces the base of the beacon. At the upper end side is preferred uses a separate coupling agent. This can have more functions have, for example, also serve to cool the LEDs.

A also for all previously described embodiments the Rundumleuchte serving advantageous embodiment of the same It is intended to profile at least one surface which is used for the passage of light. Preferably, so the lens parts are profiled, in ideal Way alike. The profiling serves for different purposes. In particular the profiling task, that of the matrix of light emitting diodes generated punctual light over the area to uniform, for example, rays, which enter and / or exit the lens to scatter break.

Prefers is the profiling of a pointing to the LEDs inside translucent area with depressions for provided the light-emitting diodes. This not only creates space, to be able to arrange the lens tightly around the light-emitting diodes. The Wells also provide for an advantageous and above all effective introduction of the Light emitting diodes generate light into the lens. Wear the wells also for diffuse distribution of the generated by the light-emitting diodes selective Light when entering the lens at.

It is preferably provided to also profile the outer translucent surface of the lens or of the lens parts. Optionally, the lens or lens parts can also only at the outer lichtdurch be profiled on a casual surface. By profiling the outer translucent surface, a uniform light emission from the lens is brought about, at the same time a bundling of light on a targeted geometric radiation of light from the beacon, in particular rotating beacon, is brought about. In particular, the external profiling determines the profile of the light emission of the beacon in a plane extending through the longitudinal central axis thereof.

Around To achieve certain luminous geometries, it is conceivable the lens on the outside the translucent area to profile so that they are arranged as a multiple lens with preferably one above the other Single lenses is formed. This ensures that the of the grid of the LEDs selectively emitted light to the outside of the Rotating beacon as above all in the vertical direction uninterrupted and evenly distributed Light appears.

The Invention finally sees it before, the lens, in particular the lens parts, of translucent, in particular transparent, preferably crystal-clear plastic form. By doing so leaves the lens especially if they are made of individual lens parts is assembled, economically produced by injection molding.

One preferred embodiment The invention will be explained in more detail with reference to the drawing. In show this:

1 a side view of a rotating beacon,

2 a central, vertical section through the rotating beacon the 1 .

3 the rotating beacon without a housing in a perspective view,

4 a side view of the representation of 3 .

5 a section VV according to the 4 .

6 a perspective view of a lens part of a lens of the rotating beacon,

7 a front view of the lens part of 6 .

8th a side view of the lens part of 7 , and

9 a plan view of the lens part of 7 ,

The Figures show a trained as Rundumkennleuchte Rundumleuchte. The rotating beacon radiates over their entire scope periodically light in the form of flash or also flashing off. Such a rotating beacon will be especially for special purpose vehicles, but also for other signaling purposes, for example on work vehicles or machinery, used.

The revolving beacon shown has a housing of a cap 10 and a lower part 11 on. The cap 10 and the lower part 11 are rotationally symmetrical, namely substantially cylindrical, formed. The cap 10 is detachable with the lower part 11 connected. The cap 10 is at least for the most part translucent, preferably made of a clear plastic. The translucent cap 10 but can also be colored, for example, blue or orange. The outside of the cap 10 is preferably smooth. The inside of the cap 10 can be smooth or profiled. The lower part 11 is formed of a colored opaque plastic.

The color of the base 11 can be arbitrary. When the translucent cap 10 colored, has the lower part 11 prefers the same color.

The housing is essentially a pedestal 12 with a light source carrier, preferably an upstanding cooling core 13 , several serving as light emitting diodes 14 , a lens 15 , as a clamping lid 16 trained coupling means and a cooling bladder 17 , Furthermore, in the interior of the housing are still only hinted board 18 for receiving the LEDs 14 and a control board 19 arranged.

The base 12 with the associated, upstanding cooling core 13 are made of a material having good thermal conductivity, for example aluminum. The base having a cylindrical base 12 is to increase its surface with a plurality of outgoing outgoing incisions 20 and upstanding cooling fins on a top 21 Mistake. The base 12 has several through holes 22 for screws, bringing the socket 12 with the lower part 11 the housing is screwed. In the illustrated embodiment, the open at the top, cup-shaped lower part 11 over columnar, upright spacers 23 that with the through holes 22 in the pedestal 12 Correspond and in the screws to connect the base 12 with the lower part 11 can be screwed. If necessary, the socket 12 have depressions on its underside, into which an upper part of the spacers 23 protrudes to Center the pedestal 12 opposite the lower part 11 , Through the spacers 23 becomes the pedestal 12 from the bottom of the base 11 spaced, leaving the bottom of the socket 12 can be flowed around for cooling the same serving air ( 2 ). The one in the lower part 11 remaining space under the pedestal 12 can serve to receive screw connections, whereby the rotating beacon can be connected to vehicle-side or machine-side electrical supply lines.

The one with the pedestal 12 connected cooling core 13 is approximately cylindrical. In the embodiment shown, the cooling core tapers 13 slightly to its top 24 out. The cooling core 13 is hollow, so that it can absorb air for heat dissipation.

To the cooling core 13 around is a plurality of preferably identically formed light-emitting diodes 14 arranged. All LEDs 14 are arranged in a uniform grid next to and above each other. In the embodiment shown, the light emitting diodes 14 arranged in a plurality of equally spaced superimposed horizontal planes, wherein in each plane a plurality of light-emitting diodes 14 ring on the circumference of the cooling core 13 are distributed. The light-emitting diodes 14 are distributed in such a ring in each plane that the light-emitting diodes 14 the individual rings are perpendicular to each other. All LEDs 14 are distributed in a ring at the different levels on a common board 18 attached, which is preferably designed as a flexible conductor, which is used to power all LEDs 14 serves. The traces on the flexible circuit boards may be arranged to connect the light emitting diodes 14 connect electrically conductive in a series, parallel or group circuit. All LEDs 14 are on the cooling core 13 cylindrical surrounding flexible board 18 arranged so that their longitudinal axes horizontally directed radially to the longitudinal center axis 25 the Rundumkennleuchte, in particular of the centrally arranged in the rotating beacon cooling core 13 , are directed radially outward. This is by the light emitting diodes 14 horizontally directed radially to the longitudinal central axis 25 radiated outward light.

The pedestal 12 is the control board 19 assigned. In the embodiment shown, the control plate is located 19 under the pedestal 12 , so in the space between the base 12 and the bottom of the base 11 ( 2 ). Connecting conductors of the light emitting diodes 14 carrying circuit board 18 around the cooling core 13 are around with the control board 19 connected. The control board 19 is designed to generate the flash or blink effect of the LEDs 14 to make a pulsed drive the same. It also contains the control board 19 all necessary electronic components for the operation of the LEDs 14 , For example, the control board 19 electronic components for gradually or continuously changing the luminous intensity of the light-emitting diodes 14 exhibit. Also, the control board 19 serve the light emitting diodes 14 operate periodically, in particular periodically pulsed, and preferably so that on the circumference of the cooling core 13 seen alternately circulating only single or multiple vertical rows of superimposed LEDs 14 operate. As a result, an all-round light phenomenon can come about, which corresponds to that of conventional Rundumkennleuchten with rotating mirrors. But it can also all LEDs 14 operated simultaneously pulsed, so that the Runkumkennleuchte around flash or flashing light generated.

The light-emitting diodes 14 are surrounded by the lens 15 coaxial with the cooling core 13 runs so that the longitudinal center axis of the lens 15 on the longitudinal central axis 25 the Rundumkennleuchte, in particular the cooling core 13 , lies. The Lens 15 is formed as a ring-shaped enveloping body, the cooling core 13 surrounds at a distance, leaving between the inside of the lens 15 and the cooling core 13 a space for receiving the LEDs 14 and the board 18 arises.

According to the invention, the lens 15 in cross-section, that is perpendicular to the longitudinal central axis 25 seen, out of shape trained. A preferred embodiment of the non-round lens 15 goes particularly clear from the 3 and 5 out. Accordingly, the lens has 15 vertical edges 26 on. In the embodiment shown, the lens has 15 over four vertical edges 26 , However, the invention is not limited thereto. The Lens 15 can have more than four edges 26 but also less than four edges 26 exhibit.

All four edges 26 the lens shown 15 lie on an imaginary enveloping circle with center on the longitudinal central axis 25 , The between adjacent edges 26 extending surfaces of the lens 15 are curved outward, the radius of this curvature is greater than the radius of an imaginary enveloping circle, on which all edges 26 lie. As a result, the surfaces of the lens 15 between two adjacent edges 26 flatter than the imaginary outer circle through all edges 26 , This creates a square lens 15 in the embodiment shown four corners (each at one edge 26 ) and intervening less strongly curved areas.

The Lens 15 the revolving beacon shown is designed as a multiple lens by three superposed annular single lenses 27 having. Each one single lens 27 is the rin like the light-emitting diodes arranged in the respective plane 14 associated with it. Consequently, in the embodiment shown, the LEDs 14 in three spaced-apart horizontal planes in the center of each lenslet 27 arranged. If the rotating beacon LEDs 14 in more or less than three levels, is the number of individual lenses 27 correspondingly larger or smaller. The individual lenses are formed by a profiling of the outer light exit surface 28 the lens 15 , Accordingly, every single lens is 27 bounded above and below by a circumferential, beveled edge to the edges 29 on the light exit surface 28 every single lens 27 , Also the projections 29 serve the light exit, whereby by the oblique edge regions of the projections 29 a light distribution is generated which leads to a homogeneous light emission from the entire light exit surface 28 the lens 15 leads.

Also the inner light entry surface 30 the lens 15 is profiled. The profiling is for each single lens 27 the same. In the middle of each single lens 27 there is a circumferential groove 31 with in the illustrated embodiment rectangular cross-section. This groove 31 located in the areas of opposite the boards 18 radially outwardly projecting light-emitting diodes 14 so the grooves 31 Room for the LEDs 14 which is big enough to pass through the light-emitting diodes 14 radiated heat the lens 15 Do not overheat by using the light emitting diodes 14 the Lens 15 in the area of the grooves 31 do not touch. Other circumferential V-shaped grooves 32 are located in the areas of the outer projections 29 that is, between the grooves 31 , The V-shaped grooves 32 reduce the wall thickness of the lens 15 in the areas of the projections 29 so the grooves 32 along with the grooves 31 the lens 15 give a wall thickness that is essentially the same everywhere ( 2 ).

It is further provided according to the invention, the lens 15 to train in several parts. In the embodiment shown ( 3 and 4 ) there is the lens 15 from four identical lens parts 33 , However, the invention is not limited thereto. The Lens 15 can also consist of fewer or more than four identical lens parts 33 be formed. It is also possible, the lens 15 to form of several dissimilar lens parts.

Through the formation of the lens 15 preferably made of the same lens parts 33 The lens is easy to handle 15 form with the non-circular cross-section. The individual lens parts 33 are at their vertical edge surfaces 34 composed, essentially without a gap. The edge surfaces 34 are due to the same design of the lens parts 33 also the same size. In the embodiment shown, the edge surfaces 34 adjacent lens parts 33 in each case a vertical dividing plane 35 composed by both the edge 26 the lens 15 as well as the longitudinal center axis 25 the lens 15 and the cooling core 13 runs. For the lens shown here 15 with four identical lens parts 33 There are two parting planes each 35 in pairs on one through the longitudinal central axis 35 running plane. The levels, on each of which two dividing planes 35 are located, intersect at right angles ( 3 and 5 ).

The non-circular cross section of the four lens parts 33 compound lens 15 comes from the fact that every lens part 33 flatter than an imaginary outer circle, on which all edges 26 the non-round lens 15 lie by the radius of each lens part 33 is greater than the radius of an envelope on which all edges 26 lie, preferably by 1.5 to 3 times.

The lens parts 33 become a form fit to the lens 15 held together. In the illustrated embodiment, this happens with connectors on the opposite end faces 36 . 37 every lens part 33 , In the embodiment shown here ( 3 ; 6 to 9 ) has the upper end face 36 every lens part 33 a preferably cylindrical projection 38 on while the lower face 37 every lens part 33 via two preferably identical cylindrical projections 39 features. This causes confusion when mounting the lens parts 33 locked out. The lower protrusions 39 engage in corresponding recesses of the base 12 one, and preferably without backlash, so that with the protrusions 39 in the corresponding recesses of the base 12 inserted lens parts 33 tight and essentially gap-free to the lens 15 can be assembled. At the upper end face 36 become the lens parts 33 through her only protrusions 38 held together by the upper annular clamping lid 16 that to the projections 38 corresponding through holes 40 having ( 2 ). The clamping lid 16 holding the lens parts 33 at the upper end face 36 also essentially without gaps.

The Lens 15 , especially the lens parts 33 , are made of a highly transparent, crystal-clear plastic by injection molding. This plastic is preferably a thermoplastic, for example ABS (acrylonitrile-butadiene-styrene).

On the clamping lid 16 is the Kühlronde in the rotating beacon shown here 17 made of a good heat-conducting material, such as aluminum, placed. This circular, plate-shaped Kühlronde 17 also has through holes 41 to the passage of the projections 38 on the upstairs ren face 36 the lens parts 33 on. This is also the reason for the cooling disk 17 to hold the lens parts together 33 at its upper end face 36 at. Optionally, thereby the clamping cover 16 omitted. The cooling disk 17 is preferably screwed centrally with the one upper end face of the cooling core 13 forming top 24 thereof.

The invention is not only suitable for all-round lights, especially Rundumkennleuchten, with one of lens parts 33 compound non-round lens 15 , The invention is also suitable for all-round lights or rotating beacons with circular lenses composed of multiple lens parts and one-piece lenses with a non-circular cross section.

10

cap

11

lower part

12

base

13

cooling core

14

led

15

lens

16

terminal cover

17

cooling Ronde

18

circuit board

19

control board

20

incision

21

cool lip

22

Through Hole

23

spacer

24

top

25

Longitudinal central axis

26

edge

27

single lens

28

Light-emitting surface

29

head Start

30

Light entry surface

31

groove

32

groove

33

lens part

34

edge surface

35

parting plane

36

face

37

face

38

head Start

39

head Start

40

Through Hole

41

Through Hole

42

face

Claims (16)

Rotating beacon, preferably rotating beacon, with a housing in which a base ( 12 ) is arranged with a light source carrier, and one of a plurality of the light source carrier associated light emitting diodes ( 14 ), characterized in that the light-emitting diodes ( 14 ) of one of several identical lens parts ( 33 ) formed lens ( 15 ) are surrounded. Rotating beacon according to claim 1, characterized in that the lens parts ( 33 ) are the same size. Rotating beacon according to claim 1 or 2, characterized in that from the lens parts ( 33 ) compound lens ( 15 ) has a non-circular cross-section. Rotating beacon according to one of the preceding claims, characterized in that the lens ( 15 ) where the lens parts ( 33 ), upright edge ( 26 ) having. Rotating beacon according to one of the preceding claims, characterized in that the lens parts ( 33 ) are curved in cross section. Rotating beacon according to one of the preceding claims, characterized in that the radius of the curved lens parts ( 33 ) is greater than half the diameter of an enveloping circle on which preferably all edges ( 26 ) of the lens ( 15 ) lie. Rotating beacon, preferably rotating beacon, with a housing in which a base ( 12 ) is arranged with a light source carrier, and one of a plurality of the light source carrier associated light emitting diodes ( 14 ), characterized in that the light-emitting diodes ( 14 ) of a non-circular in cross-section lens ( 15 ) are surrounded. Rotating beacon according to claim 7, characterized in that the non-circular lens ( 15 ) several upright edges ( 26 ), preferably parallel edges ( 26 ). Rotating beacon according to claim 8, characterized in that the non-circular lens ( 15 ) is formed of a plurality of lens portions curved in cross-section, wherein the radius of the lens portions is greater than half the diameter of an enveloping circle, on which the edges ( 26 ), preferably all edges ( 26 ), lie. Rotating beacon according to one of claims 7 to 9, characterized in that the lens ( 15 ) of a plurality of preferably identical lens parts ( 33 ) is composed. Rotating beacon according to one of claims 7 to 10, characterized in that the lens parts ( 33 ) at the edges ( 26 ) of the non-round lens ( 15 ) are composed. Rotating beacon according to one of the preceding claims, characterized in that the lens ( 15 ), in particular the lens parts ( 33 ), on at least one end face ( 26 . 27 ) with the base ( 12 ) and / or a coupling means, preferably a clamping lid ( 16 ) and / or a cooling disk ( 17 ), is connected or are. Rotating beacon according to one of the preceding claims, characterized in that the lens ( 15 ), preferably the lens parts ( 33 ), is profiled at least on a translucent surface or are. Rotating beacon according to one of the preceding claims, characterized in that the lens ( 15 ) or the lens parts ( 33 ) on one to the light emitting diodes ( 14 ) directed inner light entrance surface ( 30 ) with depressions, in particular grooves ( 31 . 32 ), wherein at least some depressions, in particular grooves ( 31 ) the light-emitting diodes ( 14 ) assigned. Rotating beacon according to one of the preceding claims, characterized in that the lens ( 15 ) or the lens parts ( 33 ) at an outer light exit surface ( 28 ) is profiled or are, wherein the profiling is preferably designed to form a multiple lens of stacked individual lenses. Rotating beacon according to one of the preceding claims, characterized in that the lens ( 15 ), in particular the lens parts ( 33 ), made of transparent, preferably transparent, plastic are formed.