EP2148554A1 - Umschaltbare Induktionsbeleuchtung - Google Patents

Umschaltbare Induktionsbeleuchtung Download PDF

Info

Publication number
EP2148554A1
EP2148554A1 EP08252490A EP08252490A EP2148554A1 EP 2148554 A1 EP2148554 A1 EP 2148554A1 EP 08252490 A EP08252490 A EP 08252490A EP 08252490 A EP08252490 A EP 08252490A EP 2148554 A1 EP2148554 A1 EP 2148554A1
Authority
EP
European Patent Office
Prior art keywords
light
signal
coil
power
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08252490A
Other languages
English (en)
French (fr)
Inventor
David Richard Verndondier
Richard Julian Clark
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP08252490A priority Critical patent/EP2148554A1/de
Priority to PCT/GB2009/001737 priority patent/WO2010010322A2/en
Publication of EP2148554A1 publication Critical patent/EP2148554A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources

Definitions

  • This invention relates to an induction light that can be powered by a primary power supply or by a back-up battery in the event of a failure in the primary power supply.
  • EP 1885163 having the same inventors as this invention, describes an induction lighting system for domestic use comprising two parts: a first part, corresponding to a wall (or ceiling) fitting, connected to a primary power supply such as the electricity mains; and a second part, corresponding to a luminaire with a light bulb.
  • the mains supply is connected to a primary coil.
  • the luminaire has a secondary coil that, in use, is placed next to the primary coil such that power is transferred to the light bulb by induction.
  • the light bulb also includes a back-up battery, which is activated when power is not received through the inductive coupling, for example during a power cut.
  • the first part of the system also includes a switch.
  • a switching signal based on the state of the switch, is sent via a transmitter, for example an optical device such as an LED, or an RF transmitter.
  • a transmitter for example an optical device such as an LED, or an RF transmitter.
  • This is located in the light fitting and couples directly with a receiver that is reciprocally presented in the light bulb. In this way, a switching signal is sent from the light fitting, to effect switching of the light, without the need for exposed electrical connections.
  • This uses a transmitter that is separate from the primary coil and a receiver that is separate from the secondary coil.
  • the transmitter and receiver are, like the primary and secondary coil, arranged for mutual cooperation.
  • the present invention provides a lighting apparatus comprising: a light fitting adapted to support an associated light and having a space adapted to receive the associated light; and an input arranged to receive a control signal, the control signal having at least two states corresponding to the associated light being turned on and off.
  • the light fitting further comprises an electrical output comprising a coil, arranged to simultaneously provide inductively to the associated light: a power signal; and a switch signal.
  • the switch signal is established in accordance with the state of the control signal thereby effecting turning on and off of the associated light.
  • the power signal is non-zero irrespective of the switch signal.
  • the light fitting is arranged to present the coil for cooperating with a respective coil in the associated light.
  • the coil is arranged to send the power signal and the switch signal simultaneously.
  • the power signal is advantageously sufficient to charge a battery irrespective of the switch signal.
  • the power signal is advantageously an alternating current signal.
  • a non-zero alternating current signal is well understood to be a signal of non-zero power or amplitude, although such a signal may have non-zero magnitude at particular points.
  • the light fitting may present the coil so as to be adjacent to the space that receives the associated light. This effects said cooperation.
  • the light fitting advantageously further comprises a switch, having at least two switching states corresponding to the associated light being turned on and off, and being arranged to generate the control signal.
  • the present invention may equivalently be found in a lighting apparatus comprising: a light fitting adapted to support an associated light and having a space adapted to receive the associated light; and an input arranged to receive a control signal, the control signal having: a first switching state corresponding to the associated light being turned on; and a second switching state corresponding to the associated light being turned off.
  • the light fitting further comprises: an electrical output comprising a coil arranged to provide a power signal inductively to the associated light, the light fitting being arranged to present the coil for cooperating with a respective coil in the associated light.
  • the power signal comprises one of: a first non-zero power signal; and a second non-zero power signal, and the electrical output is arranged to provide the first non-zero power signal when the control signal comprises the first switching state, and the second non-zero power signal when the control signal comprises the second switching state.
  • the first non-zero power signal has a first amplitude and the second non-zero power signal has a second amplitude, the second amplitude being less than first amplitude.
  • the first non-zero power signal comprises a component at a first frequency and the second non-zero power signal comprises a component at a second frequency.
  • the first and second power signals may also comprise a component at a common, third frequency.
  • the first and second power signals both provide sufficient power to charge a battery.
  • the present invention also provides a light comprising: a light source; a coil arranged to receive a electrical signal inductively and to provide electrical power to the light source, the electrical signal comprising a power signal and a switch signal; a demodulator, arranged to determine the switch signal from the electrical signal received by the coil; a back-up battery arranged to provide electrical power to the light source when the coil does not receive electrical power; a controller operable to control flow of power to the light source from the coil and the back-up battery responsive to the received switch signal; and a sealed light housing to house the light, the light housing being arranged to present the coil for cooperating with a respective coil in an associated light fitting.
  • the present invention may equivalently be found in a light comprising: a light source; a coil arranged to receive an electrical power signal inductively and to provide electrical power to the light source; a back-up battery arranged to provide electrical power to the light source when the coil does not receive electrical power; and a sealed light housing to house the light, the light housing being arranged to present the coil for cooperating with a respective coil in an associated light fitting.
  • the power signal comprises one of: a first non-zero power signal; and a second non-zero power signal.
  • the light further comprises a controller operable to provide power from the coil to the light source when the power signal comprises the first non-zero power signal so as to activate the light source, and to deactivate the light source when the power signal comprises the second non-zero power signal.
  • the light housing may comprise a connecting portion.
  • the connecting portion may house the coil to thereby present the coil to cooperate with the coil in the associated light fitting. This may be effected by ensuring that the coil in the light will be proximate to the corresponding coil in the associated light when the light is presented in the light fitting.
  • the connecting portion may be arranged to fit into an associated light fitting.
  • the controller controls whether power is supplied to the light source.
  • the controller may also control whether that power is provided by the coil or the back-up battery.
  • the controller need not be complex and may be a switch.
  • the present invention also provides a lighting system comprising a combination of the above lighting apparatus and light.
  • the coil of the light apparatus may be positioned behind an insulator.
  • the coil of the light may also be positioned behind an insulator.
  • the insulator covers all of the external surface of the light fitting to ensure the safety of the light fitting.
  • a corresponding arrangement may be used on the light as well, i.e. it may be formed such that all of its exterior is insulating.
  • the light fitting may be attached to the ceiling or wall of a building such as a home.
  • the fitting may then receive a light in a manner akin to placing a light bulb or a fluorescent strip light in their respective conventional light fittings.
  • the light fitting presents the coil so as to be adjacent to the space that receives the associated light, i.e. the coil will be disposed in the light fitting to be adjacent the coil of the light when the light is fitted to the light fitting. Of course, this promotes the inductive coupling between the coils.
  • the light fitting further comprises a modulator, which is arranged to adjust the amplitude of the power signal based upon the control signal, such that the amplitude of the power signal is greater than zero. More preferably, the modulator is arranged to generate the switch signal, the amplitude of the switch signal being based upon the control signal. Most preferably, the primary coil is arranged to provide the sum of the power signal and the switch signal to the coil of the associated light. Amplitude modulation, or amplitude shift keying, of the switch signal can be achieved in this way.
  • the switch signal can have a first amplitude
  • the switch signal can have a second amplitude.
  • the first amplitude can be zero volts and the second amplitude can be greater than zero volts.
  • the demodulator of the light is then arranged to determine the switch signal based on the amplitude of the electrical signal received by the coil in the light.
  • the light fitting may further comprise a modulator, arranged to generate the switch signal, the switch signal having a frequency based upon the control signal.
  • the primary coil is arranged to provide the sum of the power signal and the switch signal. Frequency modulation, or frequency shift keying, of the switch signal can be achieved in this way.
  • the light further comprises a filter, arranged to generate a filtered signal by removing the power signal from the electrical signal received by the coil, and wherein the demodulator is arranged to determine the switch signal based on the frequency of the filtered signal.
  • the filter may optionally be part of the demodulator.
  • phase modulation for example phase modulation, phase shift keying, quadrature amplitude modulation, may alternatively be used.
  • the switch signal may comprise two different signals, one corresponding to on and one corresponding to off, or it may comprise a signal only for one state.
  • the electrical coil may send a switch signal to the light and, with the switch off, the electrical coil may not send a switch signal to the light.
  • the present invention may be used with dimmer switches, or computer controlled lighting systems.
  • the switch will have more than one state: there will be one state corresponding to off and a variable state corresponding to different power levels to be supplied to the light source to effect the required intensity of lighting.
  • the switch signal may effect the required lighting, e.g. the switch signal may be an analog signal with a value that represents the required lighting intensity as set using the dimmer switch.
  • digital techniques could be used to indicate between a number of discrete levels of light control.
  • the lighting apparatus further comprises an electrical input arranged to receive electrical power from a power source such as a main supply, and wherein the electrical output is arranged permanently to use the electrical power received to provide the power signal.
  • a power source such as a main supply
  • the electrical output is arranged permanently to use the electrical power received to provide the power signal.
  • the back-up battery may be recharged continually when electrical power is received by the light, or the charge of the battery may be monitored and recharged once it drops below a certain threshold.
  • the coil of the light is arranged to supply power to the battery when the switch signal indicates that the light source is to be switched off.
  • the light advantageously comprises a regulator, arranged to establish the power signal from the electrical signal received by the coil. This can be used to ensure that the voltage powering the light is stable and avoids noise generated by the switch signal causing damage to the components of the light.
  • the light source may be powered from either the coil or the back-up battery when no power is received by the coil.
  • the back-up battery can provide electrical power to the light source even when the coil receives electrical power.
  • the light may further comprise a switching device to manage whether the light source is powered from the coil or from the back-up battery.
  • the switching device may comprise a first diode, biased to allow power to flow from the coil to the light source when the coil receives electrical power, and a second diode, biased to allow power to flow from the back-up battery to the light source when the coil does not receive electrical power.
  • the light may correspond to many of the conventional forms of lighting.
  • the light source may comprise an incandescent light bulb, a halogen bulb, or a fluorescent tube.
  • the light source preferably comprises one or more LEDs.
  • the state of the switching signal causes the light source to be active, the light source may be continuously powered.
  • the light source may be powered intermittently, for example according to a pulse width modulation scheme, thereby requiring less energy consumption, whilst providing adequate light output.
  • the light source is preferably placed in a housing.
  • the back-up battery may be external to the housing, but is preferably also housed within the housing and preferably the housing is sealed to be watertight.
  • a valve is optionally provided in the light.
  • a hydrophobic valve is advantageously used to allow gas to exit from the light but to prevent water from entering the light.
  • a ring may be arranged on the light housing, such that the light housing is sealable to an insulating material.
  • the ring is an o-ring and is positioned adjacent to the secondary coil, such that when the light is fixed into the light fitting, a mechanical seal is created between the light and the insulator of the light fitting, advantageously so as to prevent water from entering the space between the light and the insulating material.
  • the ring may be arranged on the light fitting in the space adapted to receive the associated light. This may increase the efficiency of power transfer to the light.
  • the light fitting is integrally formed.
  • the switch may be a light switch provided on a wall or similar of a building such as a home.
  • the switch may be provided on its own, or it may be one of a plurality of switches provided on a common switch fitting, each switch operating a different light.
  • a landing light may be controlled independently by two switches, one positioned downstairs and one positioned upstairs.
  • the switch may be powered by the ring mains generally routed around the walls of a home.
  • the present invention may also reside in a lighting system comprising: a light comprising a sealed light housing and a light source; a light fitting with a first connector piece arranged to support the light and provide power thereto; a light switch operable to turn the light on and off.
  • the light fitting comprises an input connected to a power source and arranged to provide a power signal permanently to an output comprising a primary coil, the primary coil being coupled to the switch and operable to transmit a switch signal dependent upon the switch position.
  • the power signal is non-zero irrespective of the switch signal.
  • the light further comprises a second connector piece having a secondary coil, the secondary coil being operable to receive the switch signal; a light source connectable to the secondary coil to be powered therefrom; a back-up battery connectable to the light source to provide power thereto in the event of a failure in the power supply from the secondary coil; and a controller operable to control power delivery to the light source in response to the switch signal thereby to turn the light on and off.
  • the light fitting and the light are arranged to present the primary coil and the secondary coil for inductive coupling therebetween.
  • the light fitting and the light may be arranged such that the primary coil in the light fitting and the secondary coil in the light are positioned such that the coils may cooperate.
  • the coil in the light fitting and coil in the light in the light may be arranged to be proximate with one another, when the light is fitted into the light fitting.
  • the lighting system comprises: a primary power supply 10; and a light module 20.
  • the primary power supply 10 provides power, such as from a mains supply 50, to the light module 20. Where the primary power supply is mains supply 50, the voltage may vary depending upon the country and application of the lighting system.
  • the primary power supply 10 provides a permanent live supply in that, barring power cuts, electricity is always available.
  • a light switch (not shown) is provided, which provides a switch output 60.
  • Power signal modulation block 30 generates a switching signal, which is provided to the light module 20. This signal may be used to control whether a light source of the light module 20 is on or off.
  • the light module 20 also receives power inductively from the primary power supply 10 and passes this to the light source depending on the state of the switching signal.
  • the primary power supply 10 includes a primary coil 15 for inductive coupling of power and the switch signal to the light module 20. As such, the primary power supply 10 does not have any exposed electrical connections.
  • the primary coil 15 has a toroidal winding.
  • the primary power supply 10 via the outlet of coil 15, corresponds to a ceiling or wall fitting.
  • the primary power supply 10 includes protection against water ingress, for example using an o-ring, such that it is water-proof.
  • the mains supply 50 may be provided using a cable that is moulded into the lamp holder so as to facilitate ingress protection.
  • the primary power supply unit may be fully encapsulated or moulded to ensure adequate water-proofing.
  • the light module 20 may correspond approximately in shape and in size to a light bulb.
  • the light module has a housing that comprises at least one connecting portion.
  • the at least one connecting portion is configured to fit into the associated light fitting and be supported by the light fitting. It may fasten to the coil outlet of the primary power supply 10 in standard fashion such as through a screw or bayonet light fitting.
  • the light module 20 includes a secondary coil 25, arranged to receive ac power from the primary coil 15. It also includes a signal demodulation block 100, back-up battery 40, and LEDs 160, which act as light sources.
  • the light module 20 uses power received via the secondary coil 25 to power light sources 160.
  • the back-up battery 40 provides an alternative power source when power from the primary power supply 10 is unavailable.
  • the light module 20 also receives the switching signal 60 via the secondary coil 25, which is used to control the light sources 160. In this way, the switching signal 60 is also received without exposed electrical connections between the light module 20 and the primary power supply 10.
  • the power signal modulation electronics 30 is provided on the neutral line.
  • the power signal modulation electronics 30 is powered by the mains supply 30 and could alternatively be located in the live line without otherwise changing this embodiment. Under normal operation, a primary coil voltage is continuously supplied to the primary coil 15.
  • the power signal modulation block 30 selects a reference voltage, which is the minimum amplitude for the primary coil voltage.
  • the reference voltage is 48V AC on the side of the primary coil 15.
  • the power signal modulation block 30 never reduces the primary coil voltage below the reference voltage irrespective of the switching signal. The only time the reference voltage is not present is when the permanent voltage supply fails, for example when there is a power cut.
  • the primary coil 15 is preferably implemented as part of a holding device such as a wall fitting or ceiling fitting, which is adapted to receive the light module 20, such that secondary coil 25 is positioned proximate to the primary coil 15.
  • the light module 20 is preferably embodied as a sealed lamp using a light housing, such that water may not enter the lamp.
  • the lamp is also therefore waterproof.
  • the secondary coil 25 is located in a connecting portion of the light housing and is positioned such that, when the light module 20 is fitted to the primary power supply 10, the secondary coil 25 is close to the primary coil 15 such that a voltage is induced across the secondary coil 25.
  • the secondary coil 35 also has a toroidal winding, with a ring diameter such that the secondary coil 25 may fit within the primary coil 15 when the light module 20 is placed in the ceiling or wall fitting.
  • the secondary coil 25 receives the inductively coupled voltage and passes the received voltage to the signal demodulation block 100. Due to the windings ratio between the primary coil 15 and the secondary coil 25, the voltage across the secondary coil 25 may be different from that across the primary coil 15. For example, when the primary coil voltage is 48V AC, the secondary coil voltage may be 12V AC. Consequently, the signal demodulation block 100 recognises a reference voltage that may be different from the reference voltage on the side of the primary coil 15.
  • the secondary coil 25 is also coupled to as an input to a rectifier circuit 110, the output of which is connected to a smoothing capacitor 115.
  • the smoothing capacitor's power output 118 is coupled to a battery charge controller 120.
  • a battery charge controller 120 is coupled to the back-up battery 40 and also receives as an input a sensing signal 125, for controlling the charging current provided to the back-up battery 40. As long as the secondary coil voltage is maintained to be at least the reference voltage, the battery charge controller 120 will continue to operate.
  • the smoothing capacitor's power output 118 is coupled to a current controller 150, firstly via a diode 135 (hereinafter referred to as the capacitor diode 135) and secondly via a sensing line 140.
  • the back-up battery power output is also coupled to the current controller 150, via a diode 130 (hereinafter referred to as the battery diode 130).
  • the current controller 150 regulates the power input to provide a power output which is provided to LEDs 160.
  • the expected lifetime of the LEDs 160 is greater than that of the back-up battery.
  • the LEDs 160 emit light.
  • the switch output 60 is provided to the power signal modulation electronics 30.
  • a preferred voltage is provided across the switch, which is suitable to match the power signal modulation electronics 30.
  • the voltage across the switch may be of a different value to that of the mains supply 50. The advantage of this is that the switch may be operated at a safety extra low voltage enabling the positioning of the switch in higher moisture areas due to the electrical safety of said switch.
  • the power signal modulation electronics 30 facilitates an increase in the primary coil voltage.
  • the primary coil voltage can be increased from the reference voltage of 48V AC to 72V AC.
  • the secondary coil voltage can be increased from the reference voltage of 12V AC to 18V AC. This is effectively a form of digital amplitude modulation (amplitude shift keying) of the inductively coupled power signal.
  • the signal demodulation electronics 100 detects this increase in voltage and sends instructions via a light control signal 105 to a current controller 150 so as to facilitate the switching on of the LEDs 160 in the array.
  • the power signal modulation electronics 30 adjusts the primary coil voltage, restoring it to the reference voltage (48V AC). This in turn affects the voltage out on the secondary side of the inductive coupling (18V ACc returns to reference voltage 12V AC)
  • the signal demodulation electronics 100 detects this change and changes the light control signal 105, such that the current controller 150 switches off of the LEDs 160 of the array.
  • the lighting system may be also used in environments with large quantities of water, for instance in a shower cubicle, or a swimming pool.
  • the lamp unit is hermetically sealed to be waterproof and also to withstand the pressure requirements of the environment in which it will be used.
  • the light module 20 comprises an o-ring (not shown), positioned on the exterior of the housing of light module 20.
  • the o-ring is used to create a seal between the housing of light module 20 and the primary power supply 10, so as to seal the space between the light module and the ceiling or wall fitting, and to keep this space watertight. This improves the induction between the primary coil 15 and the secondary coil 25.
  • Conventional light bulbs are unable to utilise an o-ring in this sealing application, as the o-ring is unable to withstand the high temperatures that other light sources may cause.
  • the battery is housed within the sealed lamp. Then, battery management is an important consideration. Over time, the back-up battery may emit gasses. These gasses should be removed from the light.
  • a valve (not shown) is provided to allow the emission of gasses from the light. Valve is hydrophobic such that gasses from within the light are allowed to exit through the valve, but water from outside the sealed light is prevented from entering the light. In this way, the light is able to withstand the required environmental pressure and maintain its waterproofing.
  • the lighting system of Figure 1 may operate in the following way.
  • power is supplied to primary coil 15, which causes a voltage to be induced across secondary coil 25, thereby providing an induced power source.
  • Modulator 30 changes the amplitude of this voltage dependent on the state of the switch output 60.
  • the induced power is provided to the rectifier circuit 110 and smoothing capacitor 115, which produces a dc power output 118.
  • This dc power output 118 is provided to battery charge controller 120 thereby charging back-up battery 40.
  • the induced power is also passed to demodulator 100, which determines the switch output signal 60 on the basis of the amplitude of the induced power signal.
  • the dc power output 118 is also provided to current controller 150, which senses that the dc power output is non-zero using sense line 140.
  • the voltage at the dc power output 118 is greater than the voltage across back-up battery 40.
  • the capacitor diode 135 is forward biased such that current flows from the dc power output 118 through the capacitor diode 135 and into the current controller 150.
  • the battery diode 130 is thereby reverse biased and so no current is drawn from the back-up battery 40.
  • the current controller arranges itself to provide an output using only the dc power output 118.
  • the smoothing capacitor's power output 118 provides zero power.
  • the voltage across the back-up battery 40 is greater than the voltage at the dc power output 118.
  • the capacitor diode 135 is reverse biased and the battery diode 130 is forward biased such that current flows from the back-up battery 40 through the battery diode 130 and the back-up battery 40 provides power to the current controller 150.
  • the current controller 150 also senses that the smoothing capacitor's power output is zero using sense line 140. Hence, the current controller arranges itself to provide an output using the output from back-up battery 40.
  • the light module 20 may be powered using back-up battery 40 and may advantageously be used as a portable torch. Nevertheless, since no voltage is received across the secondary coil 25, the light will remain on. In this embodiment, the current controller 150 does not respond to the light control signal 105 when it senses that smoothing capacitor's power output 118 is zero.
  • the sealed light may be partially or fully evacuated to prevent condensation within the sealed light due to the materials or due to trapped vapour, when a temperature differential exists between the interior and exterior of the light.
  • the primary coil and secondary coil of the preferred embodiment has toroidal windings, the skilled person will understand that other shapes may be alternatively used and that the secondary coil need not fit within the primary coil.
  • the light module 20 may include other power controlling circuits, for instance, a regulator for regulating the power output received by secondary coil 25.
  • the current controller 150 may be responsive to a second switching signal, that may be used to switch the light on and off, in the event of a mains failure.
  • the o-ring may be attached either the exterior of the insulating material of the primary power supply 10, or the exterior of the housing of the light module 20.
  • the o-ring should thereby seal the space between the insulator housing for the primary power supply 10 and the light housing.
  • an o-ring is described, the skilled person will understand that other shapes of ring are possible, such that the desired seal may be provided in an alternative way.
  • the skilled person will also appreciate that the location of the o-ring may be varied to provide the seal.
  • the switch output signal 60 may instead be used to modulate the voltage across the primary coil 25 using a frequency modulated signal. This frequency modulated switch signal may be superimposed on top of the AC power signal. Then a low pass filter may be used in the light module 20 to recover the power signal and a high pass filter may be used in the demodulator 100 to recover the switch output signal 60.
  • the switching signal 75 has been shown as a digital signal, being either positive or negative.
  • an analogue signal may alternatively be used, and that other digital signals may be used, for instance a pulse coded modulation signal, a line-coded binary signal or other known signalling means.
  • the switch may be mounted on a wall or may be a remote control.
  • the switch has been described as a simple on/off device, although the skilled person will recognise that a dimmer switch may also be used with an appropriately adapted switching signal.
  • the switch may alternatively be embodied in a computer controlled data stream providing an input to modulator 30.
  • the light source 60 may comprise a device other than an LED, for instance, other semiconductor lighting devices, light bulbs of all types or fluorescent tubes.
  • the light module 20 is described above as a sealed lamp and the primary coil 15 is described as being embodied in a holder. Alternatively, the primary coil 15 and light module 20 may be fixed in place.
  • the embodiments of a light described herein only use the back-up battery 40 when the inductive power source is not available, the skilled person will understand that power can be drawn from the back-up battery 40 even when the inductive power source is available. In such a case, the inductive power source can be used to charge the battery, as the battery is being used.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Push-Button Switches (AREA)
  • Electronic Switches (AREA)
EP08252490A 2008-07-22 2008-07-22 Umschaltbare Induktionsbeleuchtung Withdrawn EP2148554A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08252490A EP2148554A1 (de) 2008-07-22 2008-07-22 Umschaltbare Induktionsbeleuchtung
PCT/GB2009/001737 WO2010010322A2 (en) 2008-07-22 2009-07-14 Switchable induction light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08252490A EP2148554A1 (de) 2008-07-22 2008-07-22 Umschaltbare Induktionsbeleuchtung

Publications (1)

Publication Number Publication Date
EP2148554A1 true EP2148554A1 (de) 2010-01-27

Family

ID=40361465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08252490A Withdrawn EP2148554A1 (de) 2008-07-22 2008-07-22 Umschaltbare Induktionsbeleuchtung

Country Status (2)

Country Link
EP (1) EP2148554A1 (de)
WO (1) WO2010010322A2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9468075B1 (en) 2015-07-21 2016-10-11 Wipro Limited Emergency lighting system with smart switching
CN109690186A (zh) * 2016-09-05 2019-04-26 昕诺飞控股有限公司 灯杆
CN110708827A (zh) * 2019-10-18 2020-01-17 华荣科技股份有限公司 一种光源控制电路

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050127842A1 (en) * 2003-12-10 2005-06-16 Chao-Tung Kuo Emergency lighting function illumination appliance
EP1885163A1 (de) 2006-07-27 2008-02-06 David Richard Vernondier Umschaltbare Induktionsbeleuchtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050127842A1 (en) * 2003-12-10 2005-06-16 Chao-Tung Kuo Emergency lighting function illumination appliance
EP1885163A1 (de) 2006-07-27 2008-02-06 David Richard Vernondier Umschaltbare Induktionsbeleuchtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9468075B1 (en) 2015-07-21 2016-10-11 Wipro Limited Emergency lighting system with smart switching
CN109690186A (zh) * 2016-09-05 2019-04-26 昕诺飞控股有限公司 灯杆
CN109690186B (zh) * 2016-09-05 2020-12-11 昕诺飞控股有限公司 灯杆
CN110708827A (zh) * 2019-10-18 2020-01-17 华荣科技股份有限公司 一种光源控制电路
CN110708827B (zh) * 2019-10-18 2024-05-28 华荣科技股份有限公司 一种光源控制电路

Also Published As

Publication number Publication date
WO2010010322A2 (en) 2010-01-28
WO2010010322A3 (en) 2010-05-27

Similar Documents

Publication Publication Date Title
US8030851B2 (en) Switchable induction light
CA2594591C (en) Switchable induction light
CN109691229B (zh) 从主电源和辅助电源供电的照明设备
CN1783573B (zh) 智能开关系统
WO2006030432A1 (en) An illumination unit employing a led or a fluorescent lamp for normal and emergency operation
JP2009245834A (ja) 照明装置及び照明システム
CN108293287B (zh) 照明装置控制开关和方法
US9615433B1 (en) Occupancy sensor with a bypass photo sensor
EP2148554A1 (de) Umschaltbare Induktionsbeleuchtung
JP2008084613A (ja) 照明制御システム
US10122206B2 (en) Devices, systems and methods for emergency light operation
US11770023B2 (en) Wireless power transfer method, circuit and apparatus
JP2016213140A (ja) 照明システム
JP2008228427A (ja) スイッチングシステム
KR101698346B1 (ko) 별도의 배선없이 led 조명 제어를 수행하는 교류전원 벽스위치
JP2014078457A (ja) 光源点灯装置及び照明システム
US9674932B1 (en) Dual sensor lighting controller with 1-button remote control
EP4271134A1 (de) Bedienvorrichtung, sensorvorrichtung und beleuchtungssystem
JP2007165016A (ja) 照明装置
US20090237919A1 (en) Illuminating device
US11122658B2 (en) Solid-state lighting with remote tuning and dimming
JP7497048B2 (ja) 照明器具用リモートコントロール装置及び照明器具
KR20150050290A (ko) 스마트 led 조명 장치
KR20230007613A (ko) 무선전력송신시스템체 및 탈부착 무선전력조명체
JP2011101468A (ja) 負荷制御装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20100723

17Q First examination report despatched

Effective date: 20100823

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20121002