Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
  • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
  • H05B47/10—Controlling the light source
  • H05B47/175—Controlling the light source by remote control
  • H05B47/18—Controlling the light source by remote control via data-bus transmission
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
  • H05B47/10—Controlling the light source
  • H05B47/175—Controlling the light source by remote control
  • H05B47/18—Controlling the light source by remote control via data-bus transmission
  • H05B47/183—Controlling the light source by remote control via data-bus transmission using digital addressable lighting interface [DALI] communication protocols
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2115/00—Light-generating elements of semiconductor light sources
  • F21Y2115/10—Light-emitting diodes [LED]

Definitions

• the present invention relates to an arrangement for operating an LED-based light source.
• the arrangement according to the invention is intended to be used in particular in a so-called downlight.
• LED-based light sources are also increasingly being used in the lighting sector, since effective room illumination can also be achieved with the aid of the luminous intensities which can be achieved in the meantime. Compared to conventional
• LEDs such as gas discharge lamps or light bulbs have LEDs certain advantages in terms of their reliability.
• LEDs usually require an electronic control in order to be able to use the existing mains voltage in an appropriate manner.
• an effective dissipation of the heat occurring is required.
• the LED light source in a downlight. It is a recessed ceiling light, which is arranged within a cavity between the actual ceiling and a spaced-apart ceiling construction. Often, the spatial conditions are so tight that only little space is available for the downlight. Accordingly, there is a need to make such lights compact.
• the present invention has for its object to provide an arrangement for
• an operating device is initially provided, which is designed to convert an input-side mains voltage into a supply voltage.
• This supply voltage is then from the actual electronics the light source or a corresponding control unit converted into an operating voltage with which the LEDs are operated.
• the solution according to the invention now provides that this electronics or this control unit is outsourced.
• an arrangement for operating an LED-based light source which has an operating device which is adapted to convert an input-side mains voltage into a supply voltage, and a control unit for the light source, which is connected to the operating device and operates the LEDs with the aid of the supply voltage received from the operating device.
• the control unit is in this case arranged in a module, which is formed separately from the light source and connected thereto via a - preferably flexible - cable.
• the inventive outsourcing of the control unit in a separate module brings several advantages.
• the actual lighting unit can be kept compact, which facilitates the installation of the entire lamp.
• the electronics for operating the LEDs from the actual heat source is arranged separately, so that overheating can be excluded.
• the light source is arranged on a heat sink and the control unit module is separated from the heat sink.
• the operating device and the control unit module are connected to each other via a detachable cable connection. It has been found to be particularly advantageous to use a so-called patch cable with a J45 connector.
• the cable connection has both lines for the power supply and lines for signal transmission.
• the control unit module forms a so-called DALI device. That is, the module is capable of receiving and transmitting signals or commands according to the known DALI standard.
• the control unit module can also be designed to implement dimming commands, which have been received from a control center or a local control unit, in order to influence the brightness of the light source.
• the operating device can also be a DALI device in order, for example, to transmit malfunctions or the like to a control center.
• the operating device is preferably designed to convert the mains voltage into a DC voltage suitable for the operation of the LEDs. If the light source has a plurality of LEDs of different colors, then it is preferably provided that the operating device sets the line voltage for each of the colors in a suitable one
• FIG. 1 shows an inventive arrangement for operating a light source based on LEDs in a schematic representation.
• FIG. 2 shows a perspective view of a downlight in which the arrangement according to the invention is used
• Fig. 3 is an illustration of the connection between the operating device and control unit module.
• Reference numeral 1 provided downlight here - as can be seen in FIG. 2 - on its underside means for mounting in a suspended ceiling.
• Such mounting means for downlights are already well known and should accordingly not be explained in detail below.
• an LED module 2 is used, which is arranged according to the schematic representation of Fig. 1 in the recess of a heat sink 3.
• the LED module 2 consists of a mounted on the heat sink 3 board 4, on which a plurality of individual LEDs 5 are arranged. These are emitted via a heat sink 3 upstream pot-shaped reflector 6, wherein means within the reflector for equalization of Light output can be provided. It is in the illustrated embodiment is a lens 7th
• the voltage supplied by the power supply 50 provided by two components in a suitable manner.
• an operating device 20 connected directly to the power supply network 50 is provided for this purpose, the object of which is to convert the input-side mains voltage into a supply voltage.
• the AC voltage of the power supply network 50 is converted into a suitable DC voltage.
• the DC voltage can be converted into a PWM signal in order to influence the intensity of the light emitted by the LEDs 5 by influencing the pulse width.
• This electronics required for operating LEDs was hitherto arranged directly on the light source itself or directly in its vicinity. According to the invention, however, it is now provided to outsource this electronics in a control unit module 30, which is arranged away from the light source 2.
• the control unit module 30 is even arranged separately from the heat sink 3 and connected to the light source via a flexible cable 31.
• the connection between the operating device 20 and the control unit module 30 via a cable 21, the configuration will be explained later in more detail.
• the outsourcing of the LED electronics in the control unit module 30 brings first the advantage that the electronics away from the LEDs 5 and thus the
• Heat source of the lamp 1 is arranged.
• the heat occurring during operation of the LED 5 is considerable and must be dissipated via the heat sink 3 in an effective manner.
• the heat can not adversely affect the electronics.
• the heat in comparison to a direct arrangement of the electronics at the light source 2, the heat can also be better dissipated via the heat sink 3.
• a third advantage is that - as explained in more detail below - the arrangement according to the invention enables a very simple installation of the downlight 1.
• the outsourcing of electronics also brings with it the advantage that the
• Downlight 1 with the heat sink and the reflector 6 can be made very compact, which also allows installation in very confined spaces.
• the operating device 20 is additionally connected to the bus line 51 of a bus system, for example a DALI bus.
• the corresponding signal lines are then continued by the operating device 20 to the control unit module 30, wherein this is preferably done within the connecting cable 21.
• Fig. 1 shows a section of the bus system
• Connection cable 21 This first has lines 22a, 22b and 22c for the transmission of the supply voltage. Furthermore, lines 23 a and 23 b are provided for signal transmission. With regard to the lines 22a to 22c for transmitting the supply voltage, it should be noted that the number of lines used depends on the configuration of the LED light source 2.
• the task of the operating device 20 is, as already mentioned, to convert the mains voltage into a suitable DC voltage for operating the LEDs 5. If LEDs of different colors are used, they are usually operated at different voltages. For this purpose, it is now provided that the operating device 20 provides a suitable supply voltage for each of the different colors. In the illustrated
• Embodiment thus be transmitted three different voltages, which can then be used to operate LEDs of three different colors, for example. Red, green and blue. If, on the other hand, only LEDs of a single color are used, the number of lines can also be reduced.
• the brightness for each color can of course be changed individually by the control unit module 30. In this way, it is possible to give light of a suitable mixed color.
• the control unit module 30 thus represents a DALI device, which can implement the signals transmitted via the bus line 51 in a suitable manner. Furthermore, it is also possible to transmit feedback messages to a central control unit in accordance with the DALI standard. In the same way, however, the operating device 20 may be designed as a DALI device. Again, a transmission of operating information would be useful to be able to report about malfunction or the like to a control unit or control center. Of course, however, another protocol for signal transmission could be used instead of the DALI standard.
• Control unit module 30 and the operating device 20 are received.
• This is preferably a detachable cable connection, whereby the installation or assembly of the downlight 1 is considerably simplified.
• the operating device 20 must first be arranged in a suitable manner in the ceiling area and connected to the corresponding lines of the power supply network and possibly the DALI bus. Since this can still be done separately from the use of the downlight, such measures can be easily performed.
• Control unit module 30 made.
• the downlight can then be inserted into the ceiling and fixed there using the mounting means.
• Controller module 30 achieved by the use of a so-called patch cable, for which purpose a J45 plug 22 is used, which cooperates with a corresponding socket 23 on the control unit module 30.
• this patch cable which includes both the lines for signal transmission and the lines for power supply, a connection between the two units can be made in a particularly simple, elegant and fast way.
• the use of alternative plugs would of course be conceivable.
• Control unit module 30 detachable to design. However, as a rule, that
• the present invention opens up the possibility of using LED light sources, for example, in downlights, wherein the luminaire resulting therefrom can be kept extremely compact and at the same time mounted in a simple and comfortable way.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Push-Button Switches (AREA)
• Illuminated Signs And Luminous Advertising (AREA)
• Circuit Arrangement For Electric Light Sources In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44312240

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Citations (1)

Family Cites Families (16)

• 2010
  • 2010-02-23 DE DE202010002655U patent/DE202010002655U1/de not_active Expired - Lifetime
• 2011
  • 2011-02-23 EP EP11704984A patent/EP2539631A2/de not_active Withdrawn
  • 2011-02-23 WO PCT/EP2011/052649 patent/WO2011104256A2/de active Application Filing
  • 2011-02-23 CN CN2011800106299A patent/CN102782403A/zh active Pending
  • 2011-02-23 US US13/580,460 patent/US20130049596A1/en not_active Abandoned

Patent Citations (1)

Also Published As

Similar Documents

Legal Events