Luminous display

Abstract

The invention relates in particular to a luminous display (12) comprising a first luminous unit (10), which has a first main body (16) on which a first assembly (14) of the first luminous unit (10) is arranged, wherein: the first assembly (14) has a first LED (20) for emitting light which produces an impression of a first color and a second LED (22) for emitting light which produces an impression of a second color; an electrical connection (130) to a first DC-to-DC converter (26) of the first assembly (14), an electrical connection (133) to a second DC-to-DC converter (28) of the first assembly (14), and an electrical connection (136) to a voltage supply unit (18) are branched off of a first node (128) of the first assembly (14); the first LED (20) is electrically connected to an electrical output (124) of the first DC-to-DC converter (26), and the second LED (22) is electrically connected to an electrical output (126) of the second DC-to-DC converter (28) of the first assembly (14); the LEDs (20, 22) and the DC-to-DC converters (28) are arranged (20, 26) downstream of the first node (128) in the direction of current flow through the LEDs (20, 22).

Description

[0001] Indicator light

[0002] Background of the invention: The invention relates to a light indicator.

[0003] Switching power supplies are regularly used to operate common light displays, converting a supplied mains voltage into direct current (DC) voltages. These DC voltages are used to supply power to the LED (light-emitting diode) modules of the light displays and are typically in the range of 3.0 V to 5 V.

[0004] Switching power supplies are typically disadvantageous because they are comparatively bulky and heavy.

[0005] Object of the invention

[0006] The object of the invention is to provide a light indicator in which the power supply to the LEDs is achieved while saving weight and volume.

[0007] This problem is solved according to the invention by a light indicator according to claim 1. Advantageous embodiments are set out in the dependent claims relating to the reverse.

[0008] The light indicator is designed with a first light unit, wherein the first light unit comprises a first base body and a first assembly, wherein the first assembly comprises a first LED designed to emit light in a first color, wherein the first assembly comprises a second LED designed to emit light in a second color, wherein a first DC / DC converter is connected upstream of the first LED, wherein a second DC / DC converter is connected upstream of the second LED, and wherein the first LED, the second LED, the first DC / DC converter and the second DC / DC converter are arranged on the first base body.

[0009] The term "assembly" does not necessarily refer to a physical unit, but also to components grouped together in a circuit-technical manner.

[0010] Advantageously, the voltage applied to the first and second DC / DC converters can be converted into an operating voltage suitable for operating the first and second LEDs (in particular, a voltage suitable for forward biasing the LEDs). The voltage applied to the DC / DC converters is, in particular, a DC voltage generated from a mains voltage by a switching power supply. Advantageously, the switching power supply can be positioned at a relatively large distance from the LED film, in particular at a distance of 5 to 50 meters. The switching power supply can provide a relatively high DC voltage for operating the LED film, in particular in the range of 12 V to 48 V, and most preferably in the range of 24 V to 36 V. This DC voltage is then converted by the DC / DC converters, in particular, into a DC voltage in the range of 3 V to 5 V.Advantageously, the relatively heavy switching power supply, located away from the LED panel, does not contribute to the panel's weight, for example, if the panel is to be mounted on a building. This allows the LED display to be operated with reduced weight and volume. Furthermore, an optimized operating voltage can be set for each LED via the respective DC / DC converter, enabling particularly energy-efficient operation of the LED display.

[0011] The first LED is preferably configured to emit light in a wavelength range corresponding to the color red (particularly from 600 nm to 650 nm), the color green (particularly from 520 nm to 565 nm), or the color blue (particularly from 460 nm to 490 nm). The second LED is preferably configured to emit light in a wavelength range corresponding to one of the aforementioned colors and differing from the wavelength range of the light emitted by the first LED. For example, the first LED is configured to emit light in a wavelength range corresponding to the color red, and the second LED is configured to emit light corresponding to the color green.

[0012] In an advantageous embodiment of the indicator light, the first assembly comprises further LEDs, which are supplied with voltage by the first DC / DC converter and are configured to emit light in the first color, and / or are supplied with voltage by the second DC / DC converter and are configured to emit light in the second color. By using multiple LEDs, comparatively large areas can be covered by the first assembly. In particular, 50 to 1600 further LEDs, preferably 128 to 768, and especially preferably 256 to 768, can be connected downstream of the first and / or second LED (sharing a common DC / DC converter output).

[0013] The first and second LEDs can each have their own housing. Alternatively or additionally, the first and second LEDs can be arranged in a single housing.

[0014] An advantageous embodiment of the LED indicator comprises a first line driver and a second line driver, wherein the first LED is electrically connected to the first line driver, and wherein the second LED is electrically connected to the second line driver, and wherein, in particular, the first DC / DC converter is connected upstream of the first line driver and the second DC / DC converter is connected upstream of the second line driver. The first and second line drivers enable precise control of the respective LEDs by applying voltage signals.

[0015] A preferred embodiment of the LED indicator comprises a first column driver and a second column driver, wherein the first LED is electrically connected to the first column driver and the second LED is electrically connected to the second column driver, wherein, in particular, the first DC / DC converter is connected upstream of the first column driver and the second DC / DC converter is connected upstream of the second column driver. The first column driver and the second column driver enable precise control of the respective LEDs by applying voltage signals, especially in conjunction with the aforementioned row drivers.

[0016] Advantageously, the voltages provided by the first and second DC / DC converters can be optimized, and in particular minimized, for the operation of the first and second LEDs with regard to the voltage drop and thus the power loss in the row drivers and column drivers.

[0017] In a preferred embodiment of the indicator light, the first assembly includes a third LED configured to emit light in a third color, wherein, in particular, a third DC / DC converter is connected upstream of the third LED. In this embodiment, the number of different colors that can be generated by the indicator light is particularly large. For this purpose, preferably one of the LEDs emits light with a wavelength corresponding to the color red, one of the LEDs emits light with a wavelength corresponding to the color blue, and one of the LEDs emits light with a wavelength corresponding to the color green.

[0018] The third LED can be arranged in its own housing or in a common housing with the first LED and / or the second LED. In a further development of the aforementioned embodiment of the indicator light, the first assembly has a third row driver, wherein the third LED is electrically connected to the third row driver, and / or a third column driver, wherein the third LED is electrically connected to the third column driver, wherein, in particular, the third DC / DC converter is connected upstream of the third row driver or the third column driver.

[0019] An advantageous embodiment is one in which the first lighting unit comprises several identical modules. The use of multiple modules, while maintaining a simple design for the indicator light, increases the number of possible light signals that can be emitted by the first lighting unit, particularly with regard to the locations and times at which the individual light signals are emitted by the LEDs. Furthermore, the first lighting unit can cover a comparatively large area.

[0020] An advantageous embodiment includes a first data receiver unit of the first lighting unit for receiving control data for the LEDs, attached to the first base body, particularly to a rear side of the first base body, by means of an electromechanical connection, wherein the electromechanical connection is preferably surrounded by potting material. The electromechanical connection is particularly designed as a plug connector. In this embodiment, the first data receiver unit can be attached directly to the base body without an intermediate adapter. Due to the protective effect of the potting material, no bulky housings are required to protect the first data receiver unit. Mounting the first data receiver unit on the rear side of the base body leaves more space for the other components of the light display on the front side of the base body, particularly for the LEDs and / or the DC / DC converters.Furthermore, the potting material promotes heat dissipation from the data receiving unit.

[0021] In a further development of the aforementioned embodiment, a filling material, in particular foam, is arranged at least partially between the first base body and the first data receiving unit. Advantageously, the space is not filled with heavy cast material, but with air or a lightweight foam. This results in a weight reduction of the indicator light.

[0022] A further development of the design of the indicator light with the first data receiving unit is advantageous, in which the first data receiving unit is not enclosed in a housing. This makes the indicator light light advantageously lightweight and space-saving.

[0023] The data receiving unit can be connected to a controller for processing the received data. In this case, the controller is preferably arranged on the base body, particularly on the rear side of the base body. The controller is preferably not separated from the base body by an adapter board. The controller can be applied to the base body using an SMD assembly process.

[0024] The control system can be configured to perform the following functions:

[0025] • Conversion of high-level video data into low-level control signals for row and / or column drivers, in particular mapping, cropping, scaling, rotation, adjustment of brightness and chromaticity, chromaticity curves (gamma correction), frame rates, synchronization;

[0026] • Temperature control by adjusting target brightness values ​​based on temperature measurement by the controller, by reading a digital temperature sensor, or by evaluating the operating state of an analog temperature sensor or another electrical parameter of a component on the indicator light that contains information about the operating state of the indicator light, e.g., a measured forward voltage of one or more LEDs; a value from a temperature sensor located on the base body; a value from a temperature sensor integrated into a component located on the base body, in particular a row driver, a column driver, a DC / DC converter, a microcontroller, or a memory chip;

[0027] • Monitoring of one or more supply voltages and, in case of deviations from the setpoint, implementation of measures, e.g. sending a warning, initiating a shutdown of one or more functional blocks and / or reducing the brightness / power consumption of one or more components of the indicator light;

[0028] • Storage and / or evaluation of adjustment / calibration data for color and / or brightness control in order to compensate for corresponding differences between the individual LEDs and to achieve the most uniform overall image possible;

[0029] • Compensation of the displayed image content for defective LEDs or LEDs that deviate from the specified characteristics.

[0030] The “training of the control for temperature control by means of adjusting brightness target values, based on temperature measurement acquisitions by the control by evaluating an electrical parameter of a component on the light display, which contains information about the operating state of the light display, in the form of a measured forward voltage of one or more LEDs” is considered an independent aspect of the invention, which can be combined with any further features disclosed herein as an independent invention.

[0031] Another advantageous embodiment of the indicator light is one in which magnets are arranged on the first light unit, each magnet preferably oriented with the opposite polarity to that of the nearest neighboring magnets, and in particular, a magnet is arranged at each corner of the first light unit, preferably on the rear side of the first light unit. Due to the attractive force of the magnets, the first light unit can be easily connected to other light units that have correspondingly arranged magnets. This is especially true when magnets are located at the corners of the light units. Furthermore, the first light unit can be easily attached to magnetizable surfaces. This simplifies the mounting of the first light unit or the indicator light.The first lighting unit may have pockets for receiving the magnets and / or be designed with magnetizable plates to which the magnets adhere.

[0032] A preferred embodiment of the indicator light is characterized by cable entries of the first lighting unit, particularly for data cables and / or power cables, facing the same side of the first lighting unit, allowing the cable entries to be oriented downwards together. Orienting the cable entries vertically downwards prevents downward-flowing water, especially rainwater, from penetrating the cable entries. This enhances the protection of the indicator light and its various electronic components. The parallel orientation of the cable entries simplifies the installation of the corresponding cables, particularly the data and power cables.

[0033] An advantageous embodiment is one in which the first base body is designed as a film, wherein the film is particularly suitable for rolling up to an inner radius of 30 mm or less, preferably 20 mm or less. This allows the light display to be flexibly adapted to different surfaces. Furthermore, transport of the light display is facilitated because the base body can be rolled up in the form of the film. The film has a weight of at most 7 kilograms per square meter, preferably at most 4 kilograms per square meter.

[0034] The film is preferably thinner than 5 mm (especially between 0.01 mm and 5 mm), particularly thinner than 3 mm (especially between 0.01 mm and 3 mm), and most preferably thinner than 1 mm (especially between 0.01 mm and 1 mm). The indicator light (especially including the base, LEDs, and control unit) is preferably thinner than 25 mm. Furthermore, the indicator light is preferably thinner than 10 mm at areas not enclosed in the housing (especially without the control unit).

[0035] An arrangement according to the invention can have a support, in particular a plate-shaped one, on which the indicator light is arranged, in particular by means of a hook-and-loop fastener. The support can have a recess, in particular in the form of a through-hole, for a projection of the indicator light, in particular in the form of the control unit. This allows the installation space on an existing support to be optimally utilized. Building permits are not required when the indicator light is arranged on an existing support.

[0036] Advantageously, such a film can be applied particularly easily to buildings, especially to facades or towers. Advantageously, such a film can be used instead of monitors, particularly on buildings, where the corresponding monitors typically have a significantly higher weight (at least 25 kilograms per square meter) than a film according to the invention.

[0037] In a further development of the aforementioned embodiment, the film is formed with several layers, in particular with 4 to 6 such layers, preferably with FR4 composite material and / or polyimide as the material. The use of an FR4 material makes the indicator light flame-retardant and thus comparatively safe. The use of polyimide makes the indicator light heat-resistant, thereby increasing its versatility.

[0038] In an advantageous embodiment, the light display comprises several, in particular identical, light units, which are preferably arranged on the carrier. This allows the light display to cover large areas, and the identical design of the light units facilitates their assembly and coordination for emitting the desired electromagnetic waves or achieving the desired lighting effects. The light units can preferably cover a total area of ​​more than [missing information]. 2 , especially more than 2m 2 , especially preferred to be more than 5m 2 , be arranged.

[0039] Independently of the aforementioned light displays, the invention also encompasses a light display with multiple LEDs, wherein a first data receiving unit of the first light unit for receiving control data for the LEDs is attached to the first base body, in particular to a rear side of the first base body, by means of potting material. The features of this light display can be combined within the scope of the invention with the features of the aforementioned light displays, in particular with the features according to the dependent claims claimed in the present application.

[0040] Independently of the aforementioned light displays, the invention also encompasses a light display with multiple LEDs, wherein magnets are arranged on the first light unit, each magnet preferably oriented with the opposite polarity to that of the nearest adjacent magnets, and wherein, in particular, a magnet is arranged at each corner of the first light unit, the magnets preferably being arranged on a rear side of the first light unit. The features of this light display can be combined within the scope of the invention with the features of the aforementioned light displays, in particular with the features according to the dependent claims claimed in the present application.

[0041] Independently of the aforementioned indicator lights, the invention also encompasses an indicator light with multiple LEDs, wherein the cable inputs of the first indicator light unit, in particular for data cables and / or power cables, are oriented towards the same side of the first indicator light unit, so that the cable inputs can be oriented downwards together. The features of this indicator light can be combined within the scope of the invention with the features of the aforementioned indicator lights, in particular with the features according to the dependent claims claimed in the present application. The indicator light according to the invention preferably has two power supplies. A first power supply includes the several different DC / DC converters for supplying the various LEDs. The DC / DC converters are designed to output different voltages, in particular in the single-digit volt range, e.g., 3.5V, in order to supply the various LEDs with the optimal voltage.

[0042] In other words, the first power supply is designed as a decentralized power supply distributed across the base unit without a unified housing. This allows the first power supply to be particularly flat and the first base unit to be particularly flexible. The first power supply preferably consists of the DC / DC converters for powering the LEDs.

[0043] The first power supply, especially in the form of several DC / DC converters, is preferably located on the back of the first base body.

[0044] According to the invention, the rear side of the base body is understood to be the side of the base body that is opposite a front side with the LEDs arranged on the base body.

[0045] A second power supply, different from the first, is designed to power the first. The second power supply can be an AC / DC converter, specifically for outputting a voltage to the first power supply in the double-digit volt range, e.g., 24V. The second power supply can be connected to the first via a cable. The cable can be from 0.5m to 50m long, specifically from 1m to 30m.

[0046] The base of the illuminated display can be designed as a rollable, flexible film. Preferably, the first power supply is permanently attached to the base, while the second power supply is not permanently attached, allowing for separate installation. The base with its components, but without the second power supply, can thus be advantageously made very lightweight and installed without a separate building permit.

[0047] The LEDs can be controlled via drivers. The drivers can include current regulators. The drivers can be powered via DC / DC converters. The drivers can be configured as row drivers or column drivers. The DC / DC converters can each power chains consisting of row drivers, LEDs, and column drivers. Alternatively, the DC / DC converters can each power chains consisting of column drivers, LEDs, and row drivers.

[0048] In a particularly preferred embodiment of the present invention, the light indicator

[0049] - a base body in the form of a film that is less than 3mm thick;

[0050] - wherein a first power supply in the form of several DC / DC converters distributed on the film is arranged on the back of the film, and in particular a data receiving unit and preferably a control unit are arranged on the back of the film;

[0051] - wherein the indicator light has a second power supply unit that is spaced away from the film and is connected to the film via a cable of the indicator light.

[0052] Flock (Deep Black) may be applied, particularly by gluing, to the front of the base body. The flock coating may be designed to reduce sound by at least 3 dB. The base body may exhibit a high local contrast of more than 1000:1 between the flocked and unflocked areas. Contrast in this context refers to Weber contrast.

[0053] Alternatively or additionally, the front of the base body can feature a shader (a plastic shading unit with holes for the assemblies to increase contrast and provide mechanical protection). The shader can have ribs to prevent light reflection at certain angles. The base body can be attached to another surface, particularly the carrier, via a hook-and-loop fastener on the back. For this purpose, the back side has a hook-and-loop fastener, especially in the form of loop material. Alternatively or additionally, the base body can be centered, held, and / or screwed in place by pins or plastic rivets ("clips") on the back, and / or fixed by through-bolts or clips, thus enabling front-side maintenance.

[0054] Alternatively or additionally, the base body can be provided with an outdoor coating. This allows the indicator light to preferably achieve a Bl fire protection classification. The outdoor coating can be in the form of a protective lacquer and / or a potting compound. Before the protective lacquer or potting compound has cured, a shader, a flock coating, and / or a portion of a hook-and-loop fastener (especially in the form of loop material) can be attached to the base body through the protective lacquer or potting compound. The outdoor coating can simultaneously serve to fix and encapsulate the components against environmental influences.

[0055] Further advantages of the invention will become apparent from the description and the drawing. Likewise, the features mentioned above and those described in more detail below can each be used individually or in any combination according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples for illustrating the invention.

[0056] Detailed description of the invention and drawing

[0057] Fig. 1 schematically shows a top view of a first lighting unit of a light display according to the invention;

[0058] Fig. 2 schematically shows a top view of a section of a second embodiment of the first lighting unit;

[0059] Fig. 3 schematically shows a top view of the second embodiment of the first lighting unit; Fig. 4 schematically shows a top view of the light display, wherein the light display is formed with the first lighting unit and a second lighting unit;

[0060] Fig. 5 schematically shows a cross-section through a first base body of the light display and a data receiving unit of the light display;

[0061] Fig. 6 schematically shows a rear view of the back of the first basic body.

[0062] Fig. 1 schematically shows a top view of a first lighting unit 10 of a light display 12 according to the invention. A first assembly 14 of the first lighting unit 10 is arranged on a first base body 16 of the first lighting unit 10. A supply voltage for powering a first LED 20, a second LED 22, and a third LED 24 of the first assembly 14 is supplied to the first assembly 14 by a power supply unit 18. The power supply unit 18 is arranged, in particular, on a rear side 92 (see Fig. 5) of the first lighting unit 10. This is indicated by the dashed lines.

[0063] The first, second, and third LEDs 20, 22, 24 of the first assembly 14 serve to display light signals and colors. For this purpose, the first LED 20 is configured to emit light in a first color. The second LED 22 and third LED 24 are correspondingly configured to emit light in a second and a third color, respectively. In the illustrated embodiment, the first, second, and third LEDs 20, 22, 24 are connected in parallel.

[0064] A first DC / DC converter 26 is connected upstream of the first LED 20. This first DC / DC converter 26 transforms an input voltage into a supply voltage that is optimal for operating the first LED 20. Similarly, a second DC / DC converter 28 is connected upstream of the second LED 22, and a third DC / DC converter 30 is connected upstream of the third LED 24. The DC / DC converters 26, 28, and 30 are connected by an input line 32, through which the input voltage from the power supply unit 18 is routed to the DC / DC converters 26, 28, and 30. Further LEDs (one of which is designated 34 here as an example) are connected downstream of the first LED 20. These LEDs are designed to emit light in the same wavelength range as the wavelength range of the light emitted by the first LED 20. Alternatively, at least some of the further LEDs 34 can be connected in parallel with the first LED 20.Accordingly, further LEDs 36 are connected downstream of the second LED 22 (one of which is designated 36 here as an example), which are configured to emit light in the same wavelength range as the wavelength range of the light emitted by the second LED 22. Alternatively, at least some of the further LEDs 36 can be connected in parallel with the second LED 22. Further LEDs 38 are also connected downstream of the third LED 24 (one of which is designated 38 here as an example), wherein these further LEDs are configured to emit light in the same wavelength range as the wavelength range of the light emitted by the third LED 24. Alternatively, at least some of the further LEDs 38 can be connected in parallel with the third LED 24.

[0065] The first, second, and third LEDs 20, 22, 24 are connected directly or via the further LEDs 34, 36, 38 to an output line 40. The output line 40 serves as GND (ground) line, and the voltages of the input signals are measured with respect to the potential at the output line 40.

[0066] Specifically, the first LED 20 is electrically connected to an electrical output 124 of the first DC / DC converter 26, and the second LED 22 is electrically connected to an electrical output 126 of the second DC / DC converter 28. From a first node 128 of the first assembly 14, an electrical connection 130 leads to an electrical input 132 of the first DC / DC converter 26, an electrical connection 133 leads to an electrical input 134 of the second DC / DC converter 28, and an electrical connection 136 leads to the power supply unit 18. From a second node 138 of the first assembly 14, an electrical connection 140 leads to the first LED 20, an electrical connection 142 leads to the second LED 22, and an electrical connection 144 leads to the power supply unit 18. In particular, the third LED 24 and the further LEDs 34, 36, 38, which are connected downstream of the first, second and third LEDs 20, 22, 24, are optional.

[0067] Fig. 2 schematically shows a top view of a section of a second embodiment of the first lighting unit 10 (see Fig. 3) with the power supply unit 18, the first base body 16, and a second embodiment of the first assembly 14. A first line driver 146 is connected downstream of the first DC / DC converter 26, a second line driver 148 downstream of the second DC / DC converter 28, and a third line driver 150 downstream of the third DC / DC converter 30. In the embodiment shown, the first line driver 146 has a first electrical connection 152 and a second electrical connection 154. The second line driver 148 has a first electrical connection 156 and a second electrical connection 158. The third line driver 150 has a first electrical connection 160 and a second electrical connection 162.

[0068] Fig. 3 schematically shows a top view of the second embodiment of the first lighting unit 10 with the power supply unit 18, the first base body 16 and the second embodiment of the first assembly 14. In this embodiment, the assembly 14 includes the DC / DC converters 26, 28, 30 and the line drivers 146, 148 and 150 (see Fig. 2).

[0069] The first lighting unit 10 comprises, in addition to the first LED 20, several further LEDs of a first type, which are designed to emit light in the same wavelength range as the wavelength range of the light emitted by the first LED 20. For example, a first further LED of the first type is designated 164, a second further LED of the first type 166, and a third further LED of the first type 168. Furthermore, the first lighting unit 10 comprises, in addition to the second LED 22, several further LEDs of a second type, which are designed to emit light in the same wavelength range as the wavelength range of the light emitted by the second LED 20. For example, a first further LED of the second type is designated 170, a second further LED of the second type 172, and a third further LED of the second type 174.Furthermore, the first lighting unit 10, in addition to the third LED 24, has several further LEDs of a third type, which are designed to emit light in the same wavelength range as the wavelength range of the light emitted by the third LED 24. For example, a first further LED of the third type is designated 176, a second further LED of the third type is designated 178, and a third further LED of the third type is designated 180.

[0070] The first lighting unit 10 also includes a first column driver 182, a second column driver 184, a third column driver 186, a fourth column driver 188, a fifth column driver 190, and a sixth column driver 192. The first column driver 182 is connected downstream of the first LED 20 and the other referenced LEDs 164, 166, and 168 of the first type. The second column driver 184 is connected downstream of the second LED 22 and the other referenced LEDs 170, 172, and 174 of the second type. The third column driver 186 is connected downstream of the third LED 24 and the other referenced LEDs 176, 178, and 180 of the third type.

[0071] The first LED 20 is electrically connected to the first terminal 152 (see Fig. 2) of the first row driver 146 and to a first terminal 194 of the first column driver 182. The first additional LED 164 of the first type is electrically connected to the second terminal 154 (see Fig. 2) of the first row driver 146 and to the first terminal 194 of the first column driver 182, with the first LED 20 and the first additional LED 164 being connected to the first terminal 194 of the first column driver 182 via a common line 196. The second additional LED 166 of the first type is electrically connected to the first terminal 152 (see Fig. 2) of the first row driver 146 and to a second terminal 198 of the first column driver 182. The first LED 20 and the second further LED 166 of the first type are connected to the first terminal 154 of the first row driver 146 via a common line 200.The third LED 168 of the first type is electrically connected to the second terminal 154 (see Fig. 2) of the first row driver 146 and the second terminal 198 of the first column driver 182. Similarly, the other LEDs of the first type shown, which are not labelled, are each connected to a terminal 152, 154 (see Fig. 2) of the first row driver 146 and a terminal of the fourth column driver 188.

[0072] The second LED 22 and the other LEDs of the second type (for example, LEDs 170, 172, 174) are electrically connected to the second row driver 148 and the second and fifth column drivers 184, 190 in the same way as the first LED 20 and the other LEDs of the first type (for example, LEDs 164, 166, 168) are connected to the first row driver 146 and the first and fourth column drivers 182, 188. Similarly, the third LED 24 and the other LEDs of the third type (for example, LEDs 176, 178, 180) are electrically connected to the third row driver 150 and the third and sixth column drivers 186, 192.

[0073] Fig. 4 schematically shows a top view of the light display 12, which is formed with the first light unit 10 and a second light unit 42. The light units 10 and 42 are arranged adjacent to each other on a support 44.

[0074] The first lighting unit 10, with its first base body 16, comprises, in addition to the first assembly 14, further assemblies 46 and 48. These further assemblies 46 and 48 are identical in design to the first assembly 14. This identical design allows for efficient coordination of the assemblies 14, 46, and 48 to generate the desired light signal. A first data receiver unit 54 is located on the rear of the first base body 16 to control the first assembly 14 and the further assemblies 46 and 48.

[0075] Magnets 60, 62, 64, 66 are positioned at the corners of the first lighting unit 10 with alternating polarity (the orientation of the north pole N and the south pole S of the respective magnet 60, 62, 64, 66). In particular, the polarity of each of the magnets 60, 62, 64, 66 is oriented opposite to the polarity of the magnets 60, 62, 64, 66 of the first lighting unit 10 that are closest to this magnet 60, 62, 64, 66. Preferably, the polarity of each of the magnets 60, 62, 64, 66 is oriented opposite to the polarity of the magnets 60, 62, 64, 66 that are closest to this magnet 60, 62, 64, 66 along a boundary curve 68 of the first lighting unit 10.

[0076] The second lighting unit 42 has a base body 76 on which modules 70, 72, and 74 are arranged. A data receiver unit 82 is located on the rear of the base body 76, which receives data for controlling the modules 70, 72, and 74. Magnets 116, 118, 120, and 122 are located at the corners of the second lighting unit 42 for mounting the second lighting unit 42.

[0077] The second light unit 42 is designed identically to the first light unit 10. In the light indicator 12, the second light unit 42 is oriented rotated by 180° compared to the first light unit 10, so that the magnets 60, 66 of the first light unit 10 and the magnets 118, 120 of the second light unit 42 adhere to each other.

[0078] Fig. 5 schematically shows a cross-section through the first base body 16 of the indicator light 12 and the first data receiving unit 54 in the form of a receiver card 88 and a connector 90 on the rear side 92 of the first base body 16. The first data receiving unit 54 and the connector 90 are attached to the first base body 16 by electromechanical connections 202, 204 and 206, which are designed in particular as plug connections. The electromechanical connections 202, 204, 206 are surrounded by a potting material 94, also referred to as potting compound. This allows the first data receiving unit 54 to be attached to the first base body 16, in particular without an intermediate adapter. Furthermore, the potting material 94 protects the first data receiving unit 54 and the connector 90 from harmful influences from the environment of the indicator light 12.Between the first data receiving unit 54 and the first base body 16, there is a filler material 96, which is particularly lighter than the potting material 94. The filler material 96 is preferably a foam. The filler material 96 prevents, in particular, the potting material 94 from penetrating the area between the first data receiving unit 54 and the first base body 16. This results in a light indicator 12 being lighter. A potting frame 98 serves to spatially confine the potting material 94 during the potting process.

[0079] Fig. 6 schematically shows a view of the rear side 92 of the first base body 16 of the first lighting unit 10 with the potting material 94. Cable entries 102, 104, 106, 108 in the potting material 94 are indicated by dashed lines. Cables, e.g., power cables and / or data cables, can be routed through these entries to the first data receiving unit 54 (see Fig. 3). The cable entries 102–108 are all aligned parallel to each other. In particular, the cable entries 102–108 face the same side 110 of the first lighting unit 10. This allows the cable entries 102–108 to be oriented vertically downwards together, as shown in Fig. 6. In this way, the cable entries 102–108 are better protected against downward-flowing water, especially rainwater.

[0080] Taking together all the figures of the drawing, the invention relates in particular to a light display 12 with a first light unit 10, which is formed with a first base body 16 on which a first assembly 14 of the first light unit 10 is arranged, wherein the first assembly 14 has a first LED 20 for emitting light that creates the impression of a first color and a second LED 22 for emitting light that creates the impression of a second color, wherein an electrical connection 130 to a first DC / DC converter 26 of the first assembly 14, an electrical connection 133 to a second DC / DC converter 28 of the first assembly 14 and an electrical connection 136 to a power supply unit 18 branch off from a first node 128 of the first assembly 14.wherein the first LED 20 is electrically connected to an electrical output 124 of the first DC / DC converter 26 and the second LED 22 is electrically connected to an electrical output 126 of the second DC / DC converter 28 of the first assembly 14, wherein the LEDs 20, 22 and the DC / DC converters 26, 28 are arranged in the direction of current flow through the LEDs 20, 22 downstream of the first node 128.

[0081] 10 first lighting unit 60 magnet of the first

[0082] 12 indicator lights 35 light unit

[0083] 14 first assembly 62 magnet of the first

[0084] 16 first basic body lighting unit

[0085] 18 voltage- 64 magnet of the first

[0086] Power supply unit, lighting unit

[0087] 20 first LED 40 66 magnet of the first

[0088] 22 second LED light unit

[0089] 24 third LED 68 edge curve of the first

[0090] 26 first DC / DC converter lighting unit

[0091] 28 second DC / DC converter 70 assembly of the second

[0092] 30 third DC / DC converter 45 lighting unit

[0093] 32 input lines, 72 further assemblies of the

[0094] 34 more LEDs, which are from the second lighting unit to the first DC / DC converter; 74 more modules of the

[0095] The converter is supplied with voltage to the second lighting unit. 50 76 Base body of the second

[0096] 36 additional LEDs, which are supplied with voltage by the lighting unit, the second DC / DC converter, and the 82 data receiver of the second lighting unit. 88 Receiver card

[0097] 38 more LEDs, which are connected from the 55 90 connector to the third DC / DC- 92 rear of the first

[0098] Converter supplied with voltage to base body 94 potting material

[0099] 40 Output line 96 Filling material

[0100] 42 second light unit 60 98 potting frame

[0101] 44 carriers, 102 cable inputs

[0102] 46 additional modules 104 cable input

[0103] 48 additional modules 106 cable input

[0104] 54 first data reception unit 108 cable input unit 110 side of the first light 154 second connection of the unit 35 first line driver

[0105] 116 Magnet of the second 156 First connection of the

[0106] Lighting unit of the second line driver 118 Magnet of the second 158 Second connection of the

[0107] Lighting unit of the second line driver

[0108] 120 Magnet of the second 40 160 first connection of the

[0109] Lighting unit of the third line driver

[0110] 122 Magnet of the second 162 second connection of the lighting unit third line driver

[0111] 124 electrical output of the 164 first further LED of the first DC / DC converter 45 first type

[0112] 126 electrical output 166 second further LED of the second DC / DC converter of the first type 168 third further LED of the

[0113] 128 first node of the first type

[0114] 130 electrical connection 50 170 first further LED of the

[0115] 132 Electrical input of the second type of first DC / DC converter 172 Second further LED of the 133 Electrical connection of the second type

[0116] 134 electrical input of the 174 third further LED of the second DC / DC converter 55 second type lers 176 first further LED of the

[0117] 136 electrical connection of the third type 138 second node 178 second further LED of the

[0118] 140 electrical connection of the third type

[0119] 142 electrical connection 60 180 third further LED of the

[0120] 144 electrical connection of the third type

[0121] 146 first row driver 182 first column driver 148 second row driver 184 second column driver

[0122] 150 third row driver 186 third column driver

[0123] 152 first connection of the first 65 188 fourth column driver 190 fifth column driver 10 sixth column driver 200 common line of first connection of the first LED and second column driver 202 first connection of the first LED 204 second connection 206 third connection second connection of the first column driver

Claims

Patent claims 1. Light indicator (12) with a first light unit (10), wherein the first light unit (10) comprises a first base body (16) and a first assembly (14), wherein the first assembly (14) comprises a first LED (20) configured to emit light in a first color, wherein the first assembly (14) comprises a second LED (22) configured to emit light in a second color, wherein a first DC / DC converter (26) is connected upstream of the first LED (20), wherein a second DC / DC converter (28) is connected upstream of the second LED (22), wherein the first LED (20), the second LED (22), the first DC / DC converter (26) and the second DC / DC converter (28) are arranged on the first base body (16).

2. Light indicator according to claim 1, wherein the first assembly (14) comprises further LEDs (34, 36, 164, 166, 168, 170, 172, 174) which are supplied with voltage by the first DC / DC converter (26) and are configured to emit light in the first color and / or are supplied with voltage by the second DC / DC converter (28) and are configured to emit light in the second color.

3. Light indicator according to one of claims 1 or 2, wherein the first assembly (14) comprises a first line driver (146) and a second line driver (148), wherein the first LED (20) is electrically connected to the first line driver (146), wherein the second LED (22) is electrically connected to the second line driver (148), wherein in particular the first DC / DC converter (26) is connected upstream of the first line driver (146) and the second DC / DC converter (28) is connected upstream of the second line driver (148).

4. Light indicator according to one of the preceding claims, wherein the first assembly comprises a first column driver (182) and a second column driver (184), wherein the first LED (20) is electrically connected to the first column driver (182) and the second LED (22) is electrically connected to the second column driver (184), wherein in particular the first DC / DC converter (26) is connected upstream of the first column driver (182) and the second DC / DC converter (28) is connected upstream of the second column driver (184).

5. Light indicator according to one of the preceding claims, wherein the first assembly (14) has a third LED (24) which is configured to emit light in a third color, wherein in particular a third DC / DC converter (30) is connected upstream of the third LED (24).

6. Light indicator according to claim 5, wherein the first assembly (14) has a third row driver (150), wherein the third LED (24) is electrically connected to the third row driver (150) and / or has a third column driver (186), wherein the third LED (24) is electrically connected to the third column driver (186), wherein in particular the third DC / DC converter (30) is connected upstream of the third row driver (150) or the third column driver (186).

7. Light indicator according to one of the preceding claims, wherein the first light unit (10) comprises several identical assemblies (14, 46, 48).

8. Light indicator according to one of the preceding claims, wherein a first data receiving unit (54) of the first light unit (10) for receiving control data for the LEDs is attached to the first base body (16), in particular to a rear side (92) of the first base body (16), by means of an electromechanical connection (202, 204, 206), wherein the electromechanical connection (202, 204, 206) is preferably surrounded by potting material (94).

9. Light indicator according to claim 8, wherein a filling material (96), in particular foam, is arranged at least partially between the first base body (16) and the first data receiving unit (54).

10. Light indicator according to one of the preceding claims, wherein magnets (60, 62, 64, 66) are arranged on the first light unit (10), wherein each magnet (60, 62, 64, 66) is preferably oriented with opposite polarity to the polarity of the nearest adjacent magnets (60, 62, 64, 66), wherein in particular a magnet (60, 62, 64, 66) is arranged at each corner of the first light unit (10), wherein the magnets (60, 62, 64, 66) are preferably arranged on a rear side (92) of the first light unit (10).

11. Light indicator according to one of the preceding claims, wherein cable inlets (102, 104, 106, 108) of the first light unit (10), in particular for data cables and / or power cables, are oriented towards the same side (110) of the first light unit (10), so that the cable inlets (102, 104, 106, 108) can be oriented downwards together.

12. Light indicator according to one of the preceding claims, wherein the first base body (16) is designed as a film, wherein the film is particularly rollable to an inner radius of 30 mm or less, preferably 20 mm or less.

13. Light indicator according to claim 12, wherein the film is formed with several layers, in particular with 4 to 6 such layers, preferably with FR4 composite material and / or polyimide as material.

14. Light indicator according to one of the preceding claims, wherein the light indicator (12) has several, in particular identical, light units (10, 42) which are preferably arranged on a support (44).

15. Light indicator according to one of the preceding claims, wherein the majority of the DC / DC converters (26, 28, 30), in particular all DC / DC converters (26, 28, 30), are arranged on the rear side of the first base body (16).

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