• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a light source for a signaling device that can be used in particular for traffic routes (rail, road). In addition, the invention relates to a signaling device with such a light source. The light source has a circuit carrier (11) on which light-emitting diodes (13g, 13r) are arranged for generating different-colored useful signals (21). According to the invention, it is provided that the light-emitting diodes (13r, 13g), which are preferably designed as SMD components, are directed with their emission surfaces onto a light-conducting element configured as a neutral density filter. Advantageously, this reduces the signal strength, if required by the required operating conditions.
    公开号:CH714949B1
    申请号:CH4892019
    申请日:2019-04-11
    公开日:2019-10-31
    发明作者:Beier Axel；Kotschate Thimo；Pöpplow Norbert
    申请人:Siemens Mobility GmbH；
    IPC主号:
    专利说明:

    Description: The invention relates to a light source for a signal device, in particular for traffic routes. The light source has a circuit carrier on which at least one light-emitting diode with an emission surface directed away from the circuit carrier for a useful light forming a signal is mounted. This means that the light-emitting diode produces light which is intended as useful light for the signal. However, due to its beam angle, not all of the light emitting diode light can be used for the signal, so that residual light is also generated which is not used for the signal. The useful light is caught by the entry surface of a light-guiding element, the light-guiding element forwarding the useful light and emitting it as a signal from the signaling device. This signal can be used, for example, to regulate the traffic of rail-bound or road-bound vehicles.
    In addition, the invention also relates to a signal device, in particular for traffic routes, with a light source of the type specified above.
    [0003] A light source and a signal device of the type specified at the outset are described, for example, in EP 2 163455 A2. Such a light source can consist of one or more light-emitting diodes, the circuit carrier with the light-emitting diodes also being able to be built into a conventional signal which is prepared for incandescent lamps as illuminants. The light source with the light-emitting diode must have suitable mechanical interfaces.
    Since the controllable brightness range of LEDs is limited, it can happen that the provided optical power of the light source is too high, i.e. that the emitted light signal is too bright. In this case the signal must be reduced in intensity. This could be achieved by designing an LED module to be used as a light source, which is designed for a different power range. However, this would result in additional costs for development, approval, production and storage. Therefore, you can use another technology, which is common for light signals with conventional light bulbs. To dampen the optical power, so-called gray glass panes are inserted as gray filters in the beam path. These then form the light exit of the signal into the environment and have a diameter of 70 mm, 136 mm or 200 mm, for example, depending on the signal used. Accordingly, the gray glass panes are very heavy, especially since the use of materials makes the signal more expensive.
    The object of the invention is to improve a light source or a signal device of the type mentioned in such a way that it can be used inexpensively in the largest possible area of application.
    [0006] According to the invention, this object is achieved with the light source specified at the outset in that the light-guiding element comprises a neutral density filter. Neutral density filters are also called gray filters or gray glass filters, whereby these can be formed from a defined gray-colored glass or plastic. The version in glass is particularly advantageous, since it is particularly robust against environmental influences and temperature fluctuations. The gray coloring attenuates all visible wavelengths by a largely identical, defined factor. The damping factor (also called degree of blackening) is set by the manufacturer of the material and can be ordered accordingly. The degree of blackening is given in each case for a millimeter thickness of the material, the transmission of the optical light signal actually achieved being dependent on the optical path which the light takes through the gray filter.
    According to an advantageous embodiment of the invention it is provided that the radiation surface of the light-emitting diode or the light-emitting diodes is designed as an optical interface to air and there is an air gap between the at least one light-emitting diode and the light-guiding element. This has the advantage that the light-guiding element can be easily replaced, which is preferably held in a housing structure or a holding structure. This bracket allows precise adjustment of the air gap. The light source can thus be used for different intensity ranges of the light signals to be generated, even if it lies outside the light intensity of the light-emitting diodes to be electronically controlled. In order to reduce an excessively strong light signal from the light-emitting diodes, the light-guiding element designed according to the invention as a neutral density filter is inserted as the light-guiding element. As a result, the light intensity of the generated signal is advantageously reduced compared to the use of a light guide element without a neutral density filter.
    The light guiding element is significantly smaller compared to the use of a gray glass pane, since this is placed directly after the optical interface of the radiation surface of the light-emitting diodes. This can, for example, have the dimensions of approximately 6.4 x 2.2 x 9.6 mm. It is therefore advantageous to use a small amount of material and does not have to create a recording device for a gray filter disk in the associated signal device. Instead, an already used component (light guide element) is simply replaced.
    According to another advantageous embodiment of the invention it can be provided that the light guide element consists of a base body and a filter body. The base body has the optical permeability typical of light guides with low optical attenuation. Only the filter body, which also forms part of the light-guiding element, takes over the function of the neutral density filter, wherein it can advantageously be cut from glass panes, which can be obtained comparatively inexpensively from suitable manufacturers. It is possible to store different disks of the neutral density filter, so that if necessary, light elements can produce the necessary damping properties for different applications. It is also possible to use ge
    CH 714 949 B1 another embodiment of the invention to arrange several disc-shaped semi-finished products made of the material of the neutral density filter one above the other in order to create the filter body.
    The base body and the filter body or individual disks of the filter body can be glued to one another, for example. Here, an optical adhesive is preferably used, which allows transmission of the signal light. In this way, a light-guiding element is produced that is easy to manufacture, the individual components of which are reliably connected to one another. This fixed connection of the base body and filter body on the one hand facilitates the assembly of the light-guiding element, and on the other hand prevents dirt or moisture from getting into the parting plane between the base body and filter body (or individual components of the filter body).
    According to another embodiment of the invention it is provided that the light exit surface of the light-guiding element is based on its dimensions of a filament of an incandescent lamp. This has the advantage that the light source can be installed in a conventional signal instead of an incandescent lamp previously used, without the signal device having to be optically modified. Specifically, it is possible to keep the reflectors used, for example. The signal light generated by the LEDs and guided in the light-guiding element is emitted in all possible directions on the light exit surface, which is very roughened, that is, in the directions facing the light exit side. This results in a hemispherical radiation pattern which is modeled on the corresponding area of the radiation pattern of the filament of an incandescent lamp. A light source designed in this way is therefore advantageously suitable for ensuring cost-effective modernization of existing signaling systems by introducing LED technology.
    It when the light exit surface is provided with an aperture is particularly advantageous. This diaphragm can be used in particular for the design of the light exit surface with the dimensions of a filament. The light-guiding element, which is used as standard in the light source, can then itself have larger dimensions and is modified in terms of its aperture, depending on the type of incandescent lamp to be replaced. The aperture can advantageously be exchangeable so that the light source according to the invention can replace different incandescent lamps. However, it is also advantageous to manufacture the diaphragm with a housing structure holding the light-guiding element in one piece, as a result of which manufacturing outlay can be saved. In addition, this results in a simplified assembly of the light-guiding element, which can be aligned with the diaphragm within the housing.
    The aperture can also be used advantageously to weaken the light intensity of the light signal. Here, however, the geometric requirements for the filament to be replaced must be taken into account if the light source is to replace an incandescent lamp. Otherwise, it is advantageous to choose the aperture as large as possible if the brightest possible signal from the signal device is desired. In this case, the light signal is mainly attenuated by the neutral density filter used and less or not by the aperture. According to a special embodiment of the invention it is provided that an optical deflection element for residual light is arranged on the circuit carrier, which deflects residual light to at least one sensor element. The optical deflection element preferably has an entry surface and an exit surface for the captured residual light. This is not all of the residual light emitted by the at least one light-emitting diode. However, the optical deflection element advantageously improves the yield with regard to the residual light available for monitoring, so that a stronger measurement signal can advantageously be generated on at least one sensor element.
    The deflection of the residual light in question preferably takes place via at least one reflection surface in the deflection element. This can be a flat surface. According to a special embodiment of the invention, however, a curved reflection surface can be used, which focuses the residual light in question on the sensor element. Bundling has the advantage that the intensity of the measurement signal generated by the sensor element can be increased, since the sensor element only provides a spatially limited detection area for the residual light.
    Depending on the geometry of the deflecting element, the reflecting surface can be designed such that, owing to the difference in the optical density between the material of the deflecting element and the surroundings (preferably air), total reflection takes place on the reflecting surface. This essentially depends on the angle at which residual light strikes the reflection surface. If total reflection of residual light on the reflection surface cannot be guaranteed, the reflection surface can also be mirrored by applying a mirror layer to the reflection surface of the deflecting element.
    According to a further embodiment of the light source, it can be provided that a plurality of light-emitting diodes with different emitted light wavelengths and different installation positions are mounted on the circuit carrier, the entry surface of the deflecting element absorbing residual light from the plurality of light-emitting diodes. For this purpose, the entry area of the deflection element must be dimensioned taking into account the installation positions of the light-emitting diodes and the installation position of the deflection element. The light source thus formed can advantageously e.g. can be used in signaling devices for multicolored light signals. This means that the light signals e.g. in red, yellow and green can come from the same light exit surface of the signaling device, since the light source can shine in several colors.
    If the intensity of the useful light emitted by a light-emitting diode is not sufficient for the light signal, it may also be necessary for several light-emitting diodes of one wavelength (color) to be used in the light source. It
    CH 714 949 B1 is advantageous if light-emitting diodes of a certain emitted light wavelength are mounted on the circuit carrier in a centrally symmetrical arrangement.
    When using a plurality of light-emitting diodes, a further embodiment of the invention provides that light-emitting diodes, which generate a stronger signal due to their distance from the entry surface and / or their light wavelength in the sensor element, are arranged on the side edge of the entry surface, and light-emitting diodes which, owing to their distance from the entry surface and / or their light wavelength in the sensor element, generate a weaker signal in comparison, are arranged in the central region of the entry surface. The light output of the relevant light emitting diodes in nominal operation is used as a basis. Two criteria are important for the strength of the signal generated by the sensor element. The distance between the light-emitting diodes and the entry surface of the deflecting element is important, since the proportion of residual light received by the deflecting element increases the closer it is positioned to the entry surface. Furthermore, the strength of the sensor signal can also vary due to the light wavelength striking the sensor with the same light intensity.
    These differences lead to the fact that the measurement signals do not deliver the same signal levels of the measurement signals when using different light-emitting diodes. However, this can advantageously be compensated for by the fact that the light-emitting diode, which generates the weaker or weakest signal in the sensor element, is arranged in the middle of the entry surface, so that as large a portion of the residual light as possible is captured. In contrast, the light-emitting diodes, which are located at the edge of the entry surface, shine with part of the emitted residual light past the entry surface, so that this residual light cannot be directed onto the sensor element. By positioning the light-emitting diodes in front of the entry surface, the signal level on the sensor element can thus be influenced in a targeted manner, so that the intensity of the measurement signals generated is evened out. This has the advantage that a downstream evaluation unit is narrowed as little as possible in its dynamic range. This enables the use of inexpensive electronic elements of the evaluation unit, since they only have to cover a smaller dynamic range.
    Furthermore, it can be particularly advantageously provided that a side surface of the deflecting element, which adjoins the lateral edge of the entry surface, is made opaque. This can be done, for example, by means of an opaque coating. This ensures that residual light that has not reached the entry surface of the deflecting element does not reach the deflecting element through the surface area adjacent to the entry surface. The amount of residual light that is to enter the deflection element can thus advantageously be set in a targeted manner.
    According to another embodiment of the invention it is provided that the deflection element has an exit surface for the deflected light and the sensor element is arranged directly in front of the exit surface. This arrangement can preferably be oriented such that the sensor elements can also be mounted on the circuit carrier. The sensor surface of the sensor element and the exit surface are then preferably aligned parallel to the surface of the circuit carrier.
    An arrangement of the sensor element directly in front of the exit surface has the advantage that the residual light coupled out of the deflection element strikes the sensor surface of the sensor element to the greatest possible extent. A gap can be provided between the sensor element and the exit surface, which gap must be bridged by the residual light. The gap can serve as tolerance compensation during assembly. Alternatively, the deflection element with the exit surface can also be placed directly on the sensor element. The gap can also be bridged by an optically transparent medium such as a casting compound.
    It is also advantageous if the deflecting element has an adjusting device on a first mounting surface for the circuit carrier and / or on a second mounting surface for a housing structure of the light source. This can be formed, for example, by a pin which engages in suitable bores or holes in the circuit carrier and / or the housing structure. The adjustment devices advantageously facilitate assembly and, in the assembled state, improve the function of the deflecting element described above to deflect residual light of different light-emitting diodes with different proportions to the sensor element.
    According to another embodiment of the invention, two deflection elements, each with one sensor element (or in each case a plurality of sensor elements, more on this below), can be provided, the deflection elements lying opposite one another on the circuit carrier with entry surfaces facing one another. The at least one light-emitting diode is then arranged between the entry areas on the circuit carrier. This arrangement is particularly advantageous if several light-emitting diodes are used in different installation positions on the circuit carrier. If, due to the arrangement requirements, they are at different distances from the one deflecting element and the other deflecting element, the use of two deflecting elements can ensure that sufficient residual light from the relevant light-emitting diode is always received either by one deflecting element or by the other deflecting element. The entirety of the light-emitting diodes can be monitored in that the measurement signals recorded by the two sensor elements in question are evaluated independently or together.
    In addition, it is advantageous if two independently operable sensor elements are provided on the exit surface of the deflecting element or the deflecting elements. These sensor elements can advantageously be as close as possible to one another. The redundant arrangement of two sensor elements on a deflection element advantageously has the effect
    CH 714 949 B1 higher functional reliability, since in the event that one of the sensor elements fails, the measurement signal of the other sensor element can be used to monitor the light source. As a standard, one sensor element is advantageously used for monitoring, while the second sensor element is only used when the first sensor element fails. Of course, two deflection elements, each with two sensor elements, can also be used.
    According to an alternative embodiment of the invention, it can be provided that the beam path of the residual light between the radiation surface of the light-emitting diode and the sensor element leads exclusively through air. In other words, the residual light is guided directly from the emission surface of the light-emitting diode to the sensor element without using a deflection element. This advantageously results in a particularly inexpensive design, since the installation of deflection elements can be dispensed with.
    The object is also achieved by the signal device specified at the outset, in which a light source according to one of the preceding claims is installed. The light source installed in the signal device has the advantages which have already been explained in detail above.
    According to an advantageous embodiment of the signal device can also be provided that the light guide has a height relative to the circuit carrier, that the light exit surface of the light guide is at the level of a filament of an incandescent lamp installed in the signal device as a light source. The term incandescent lamp means an incandescent lamp which would be used in a signaling device equipped with a conventional incandescent lamp. In other words, the light source with the LED is suitable for replacing a conventional illuminant in the form of an incandescent lamp in the signaling device, it being necessary to ensure that the geometrical dimensions of the light exit surface correspond to the filament of the incandescent lamp to be replaced (this was discussed above already received) and the light exit surface is also arranged in terms of height where the filament of the incandescent lamp would be arranged. This is important, for example, so that the reflectors in the signal device lead the light signal out of the signal device in the desired manner. The light source with the LED can then simply be installed in the signaling device instead of the incandescent lamp.
    Further details of the invention are described below with reference to the drawing. Identical or corresponding drawing elements are each provided with the same reference numerals and are only explained several times to the extent that there are differences between the individual figures.
    [0031] The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention that are to be considered independently of one another, which also further develop the invention independently of one another and thus also to be regarded individually or in a combination other than the one shown as part of the invention within the scope of the claims are. Furthermore, the described embodiments can also be supplemented by further features of the invention that have already been described.
    [0032] The figures show:
    1 shows an exemplary embodiment of the light source according to the invention with a light guide element schematically in section,
    2 shows a top view of the exemplary embodiment according to FIG. 1 without a housing structure, the section 1 - 1 according to FIG. 1 being shown in FIG. 2 (the cutouts with the holes 20 lie in a different plane),
    3 to 5 embodiments of light guide elements with base body and filter body as a side view,
    6 schematically shows the installation of an embodiment of the light source according to the invention in an embodiment of the signal device according to the invention in three dimensions.
    1 is built on a circuit carrier 11, which is provided with a housing structure 12 for protection. The housing structure 12 has the shape of a cap and is placed on the circuit carrier 11.
    Light-emitting diodes 13r, 13g and sensor elements 1a, 1b are mounted on the circuit carrier. Both the sensor elements 2a, 2b (as well as 1a, 1b, see FIG. 2) and the light-emitting diodes 13r, 13g (as well as 13y, see FIG. 2) are designed as SMD components and by means of common SMD methods (SMD : Surface Mounted Device) inexpensively mounted on the surface of the circuit board 11. The light emitting diodes 13r, 13g are also surrounded by a holding frame 16, which serves as a support surface for a light-guiding element 17, which is also held in the housing structure 12. The light-guiding element 17 is designed as a gray filter (can be ...), so that the intensity of the light signal generated by the light-emitting diodes is reduced.
    Furthermore, two optical deflection elements 18 are arranged on the side of the light-emitting diodes 13r, 13g, which are held in the holes 20 of the housing structure 12 and the circuit carrier 11 via adjusting devices 19 in the form of pins. At the same time, this enables the deflection elements 18 to be precisely aligned with the circuit carrier 11, the housing
    CH 714 949 B1 structure 12 to the deflection elements 18 and thus indirectly also an alignment of the light guide element 17, which is held in the housing structure 12 with a precise fit.
    The emission surfaces of the light emitting diodes 13r, 13g (and 13y, see FIG. 2) point away from the mounting side of the circuit carrier 11. 1 shows characteristic beam paths of the light emitted by the light-emitting diode 13g. The radiation, which is detected by the light guide element 17, forms the useful light 21. This is emitted to the surroundings as a light signal 23 at a diffuse light exit surface 22. The light that is not detected by the light guide element 17 is the residual light. Part of this residual light 23 is directed through the deflection elements 18 onto the sensor surfaces of the sensor elements 2a, 2b (and 1a, 1b, see FIG. 2). Two beam paths are also shown here as examples. The residual light is coupled into the respective deflection element through an entry surface 24 and reflected by total reflection on a reflection surface 25 and / or on a curved reflection surface 26 and directed through an exit surface 27 onto the sensor surface of the sensor elements 2a, 2b.
    The light exit surface 22 is covered by an aperture 52, wherein the aperture opening of this aperture 52 determines the area that is used as the light exit opening 22. 1 is an additional component that can be connected to the rest of the housing structure 12 and thus forms part of this housing structure 12. In this way, the panel 52 can be selected during assembly so that its opening is suitable for the intended application. For example, the opening of the diaphragm 52 can be designed in such a way that the luminous characteristic of a filament of an incandescent lamp is modeled on a conventional signal device.
    Between the exit surface 27 and the respective sensor element 2a, 2b there is a gap 28 which is filled with air according to FIG. 1, but can also be filled with an optical medium (potting or adhesive) in a manner not shown. Since the deflection elements are constructed identically, the entry surface 24, the reflection surface 25, the curved reflection surface 26 and the exit surface 27 are found in the same way on both deflection elements. The curved reflection surface 26 is additionally coated with a mirror layer 29 so that the coupled-in residual light can be reliably deflected onto the sensor elements 2b, 2a, even if the angle of reflection would not allow total internal reflection without a mirroring.
    2, the arrangement of the five light-emitting diodes used can be seen. In the middle there is a single light emitting diode 13y for yellow light. This can produce yellow light with a sufficient light intensity, which is why a single light-emitting diode 13y is sufficient. Therefore, it is provided in the center of the arrangement. Two light-emitting diodes 13r are provided for red light and two light-emitting diodes 13g for green light. In order to ensure an arrangement that is symmetrical with respect to the optical axis of the light-guiding element 17, the light-emitting diodes 13r and 13g are each arranged diagonally from the yellow light-emitting diode 13y located in the center. The light-emitting diodes are surrounded by the holding frame 16 for the light-guiding element 17, which, like the housing structure 12, has been omitted in FIG. 2.
    The deflection elements 18 are arranged on the side of the light-emitting diodes 13r, 13g, 13y. 2, these are located above the sensor elements 1a, 1b, 2a, 2b mounted on the circuit carrier 11. Therefore, the light exit surfaces 27 according to FIG. 1 cannot be seen in FIG. 2. The light entry surfaces 24 according to FIG. 1, which are located in the oblique region of the deflection elements 18, are also not visible in FIG. 2. However, it can be seen in FIG. 2 that the width b of these entry areas is selected such that the outer light-emitting diodes 13g, 13r are only partially covered by the entry area, in particular half of their width. For this purpose, the outer light-emitting diodes 13g, 13r are each very close to the entry surface 24 of one of the two deflection elements. The individual light-emitting diode 13y located in the center is more distant from the entry surfaces, but is instead positioned exactly in the middle of the width dimension b of the deflection elements.
    Because of the greater distance of the light-emitting diode 13y from the entry surface 24, a smaller amount of the residual light reaches the deflection element than if it were positioned as close to the entry surface as the light-emitting diodes 13g, 13r. In order to reduce the amount of the coupled-in residual light from the light-emitting diodes 13g, 13r into the deflecting element located closer, the width b of the entry surface is chosen such that the partial coverage of the entry surface with the light-emitting diodes 13g, 13r leads to part of the residual light meet side surfaces 30 of the deflecting element. These are coated with an opaque layer 31, so that this residual light cannot be coupled into the deflection element in question. This leads to an approximation of the light intensities of the coupled-in residual light, regardless of whether the residual light of the light-emitting diode 13g, the residual light of the light-emitting diode 13y or the residual light of the light-emitting diode 13r is coupled into the respective deflection element (more on this in the following).
    1 is made of a so-called neutral glass filter glass, which is offered by glass manufacturers. This is colored gray so that the factor by which the light signal is attenuated by the gray filter is defined. However, this also depends on the height h of the light guide element 17. Because of the path of the light 21, the attenuation of the neutral glass filter glass can be too high.
    3 to 5 shows the possibility of producing the light-guiding element 17 from a base body 50 and a filter body 51. The base body 50 then consists of a clear glass which is suitable for the low-loss conduction of light signals. The filter body 51 consists of neutral filter glass (gray glass), so that the optical attenuation takes place only over a partial area of the light guide 17.
    CH 714 949 B1 According to FIG. 3, the filter body consists, for example, of a 1 mm thick neutral glass filter glass, which is colored gray in a defined manner. If greater damping is required, either a neutral glass filter glass can be used, which is colored darker, the geometry corresponding to that in FIG. 3. Another possibility is to use a thicker filter body 51 according to FIG. 4, which is for example 2 mm thick. 5 there is also the possibility of using two filter bodies 51 according to FIG. 3, which are optically connected in series.
    The filter body 51 can be connected to the base body 50 by adhesive connections 53, not shown, from an optical adhesive. This makes it possible to produce light-guiding elements 17 with different damping characteristics with little effort in terms of storage. The filter body 51 can be made from neutral glass filter disks, for example by cutting, so that they can be advantageously manufactured inexpensively.
    6, the light source according to the invention is shown installed in a signal device. The housing structure 12, which is built on the circuit carrier 11, can be seen. The circuit carrier is screwed onto a cooling structure 57 with ribs using screws 58. The light source is inserted into an indicated housing 55 of the signal device, which has a reflector 54, which is designed for normal lamps with a filament. However, the opening in the housing structure 12 largely corresponds to the geometry of a conventional incandescent lamp, so that a replacement using LED technology is implemented. The signal leaves the signal device through a signal opening 56, which is closed with an unclouded pane.
    权利要求:
    Claims (14)
    [1]
    claims
    1. Having a light source for a signal device, in particular of traffic routes
    a circuit carrier (11) on which at least one light-emitting diode (13r, 13g, 13y) with an emission surface directed away from the circuit carrier (11) for a useful light forming a signal is mounted,
    - An optical light-guiding element (17) for the useful light emitted by the light-emitting diode (13r, 13g, 13y), characterized in that the light-guiding element (17) comprises a neutral density filter.
    [2]
    2. Light source according to claim 1, characterized in that the radiation surface is designed as an optical interface to air, and there is an air gap between the at least one light-emitting diode (13r, 13g, 13y) and the light-guiding element (17).
    [3]
    3. Light source according to one of the preceding claims, characterized in that the neutral density filter of the light guide element (17) consists of a glass.
    [4]
    4. Light source according to one of the preceding claims, characterized in that the light guide element (17) consists of a base body (50) and a filter body (51).
    [5]
    5. Light source according to claim 4, characterized in that the base body (50) and the filter body (51) are firmly connected.
    [6]
    6. Light source according to one of the preceding claims, characterized in that a light exit surface (22) of the light guide element (17) is modeled in terms of its dimensions of an incandescent filament of a light bulb to be replaced by the light guide element (17).
    [7]
    7. Light source according to claim 6, characterized in that the light exit surface (22) is provided with an aperture (52).
    [8]
    8. Light source according to claim 7, characterized in that the diaphragm (52) is formed as part of a housing structure (12) in which the light guide element (17) is held.
    [9]
    9. Light source according to one of the preceding claims, characterized in that an optical deflection element (18) for residual light is arranged on the circuit carrier (11), which deflects residual light onto a sensor element (1a, 1b, 2a, 2b).
    [10]
    10. Light source according to one of claims 3 to 9, characterized in that a plurality of light-emitting diodes (13r, 13g, 13y) with different emitted light wavelengths are mounted in different installation positions on the circuit carrier (11).
    [11]
    11. Light source according to claim 10, characterized in that light-emitting diodes (13r, 13g, 13y), with which due to their distance from an entry surface (24) of the deflecting element (18) and / or their light wavelength in the sensor element (1a, 1b, 2a, 2b) a stronger signal can be generated, are arranged on the lateral edge of the entry surface (24), and light-emitting diodes (13r, 13g, 13y), with which, due to their distance from the entry surface (24) and / or their light wavelength in the sensor element (1a, 1b, 2a, 2b) a weaker signal can be generated, are arranged in the central area of the entry surface (24).
    [12]
    12. Light source according to one of claims 1 or 2, characterized in that the at least one light-emitting diode (13r, 13g, 13y) is designed as an SMD component.
    CH 714 949 B1
    [13]
    13. Signal device, in particular for traffic routes, characterized in that a light source according to one of claims 1 to 12 is built into the signal device.
    [14]
    14. Signal device according to claim 13, characterized in that the light guide element has a height relative to the circuit carrier (12), that the light exit surface (22) is at the height of an incandescent filament of a light bulb to be replaced by the light guide element (17) as a light source.
    CH 714 949 B1
    类似技术:
    公开号 | 公开日 | 专利标题
    DE19507234B4|2005-06-16|Vehicle signal light with several LEDs
    DE10330261B4|2007-07-12|vehicle light
    EP2042801B1|2016-11-02|Light source with adjustable emission characteristics
    DE102010054923B4|2015-03-12|Lighting device for a vehicle for two light functions
    EP0780265A2|1997-06-25|Vehicle rear light
    DE102014208340A1|2014-11-13|Luminaire unit and light deflection device
    EP2502784B1|2019-06-26|Vehicle light, in particular for lighting the interior of a vehicle
    DE10308703A1|2004-11-11|Motor vehicle headlight has light diode modules with a shade at the focus to vary the light distribution and then an outer dispersion unit
    DE102006035842A1|2007-03-22|Vehicle lamp e.g. side blinking lamp, for use in cap of external rear mirror, has integrally formed optical fiber-blind unit that includes optical fiber and blind section, where unit is manufactured by two-component spray casting process
    AT516554B1|2018-02-15|Lighting device for a motor vehicle
    DE19646042A1|1998-05-14|Lighting device for motor vehicle
    DE10143415A1|2003-03-20|light assembly
    CH714949B1|2019-10-31|Light source for a signaling device with light guide and signal device with such a light source.
    DE102014212918A1|2016-01-21|Motor vehicle lighting device
    EP2796769A2|2014-10-29|LED light with a light conductor assembly
    DE102010001526B4|2016-03-31|Lighting unit with a prism for a vehicle
    DE202016103287U1|2016-07-15|Headlights for rail vehicles
    DE102018220623A1|2020-06-04|Lamp arrangement for a vehicle
    EP2747060B1|2019-07-10|Indicator lamp
    DE102011104055A1|2012-12-13|Illumination device, particularly headlight or rear light for vehicle, comprises light source, which has multiple semiconductor light sources, where reflector has reflector body and reflection surface
    EP3853518A1|2021-07-28|Light module, in particular for use in a lighting device for a motor vehicle
    EP2352045B1|2018-12-12|Assembly for influencing light with a light guide element and a reflector element
    EP3619466A1|2020-03-11|Lighting device for vehicles
    DE102017102003A1|2018-08-02|Lighting device for a motor vehicle
    EP3486563A1|2019-05-22|Light source for a signaling device with a sensor element for monitoring and a signaling device including such a light source
    同族专利:
    公开号 | 公开日
    AT521121A2|2019-10-15|
    DE102018205652A1|2019-10-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6880962B2|2002-12-09|2005-04-19|Osram Sylvania, Inc.|LED light source mimicking a filamented lamp|
    DE102008039188A1|2008-08-20|2010-05-27|Siemens Aktiengesellschaft|Ground-level light signal|
    DE102008047664A1|2008-09-15|2010-05-20|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|light signal|
    DE102010009429A1|2010-02-24|2011-08-25|Siemens Aktiengesellschaft, 80333|Symbol Gazette|
    DE102010024381A1|2010-06-16|2011-12-22|Siemens Aktiengesellschaft|light signal|
    DE102012206614A1|2012-04-23|2013-10-24|Siemens Aktiengesellschaft|light signal|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018205652.8A|DE102018205652A1|2018-04-13|2018-04-13|Light source for a signaling device with light guide and signal device with such a light source|
    [返回顶部]