GB2509125A

GB2509125A - LED lamp

Info

Publication number: GB2509125A
Application number: GB1223157.7A
Authority: GB
Inventors: Michael Zandi
Original assignee: INTERNAT LIGHTING CONSULTANTS
Current assignee: INTERNAT LIGHTING CONSULTANTS
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2014-06-25
Also published as: GB2509191A; GB201223157D0; WO2014096829A3; WO2014096829A2; GB201309945D0

Abstract

A lamp comprises a module fitted in a housing 11 of the lamp and adapted to control at least one light-emitting diode of the lamp, a first heat sink 1 for dissipating heat generated by the module when the lamp is in operation, and a second heat sink 3 for dissipating heat generated by the LED when the lamp is in operation. The second heat sink is different from the first heat sink. A remote controller is also disclosed.

Description

LED lamp This invention relates to a new and innovative LED lamp.

LED lamps (or LED light bulbs) using light-emitting diodes (LEDs) as light source tend to replace conventional lamps, such as incandescent or fluorescent lamps, because they offer long nominal service life and high nominal energy efficiency.

Known LED lamps have however several drawbacks.

The diodes used in the LED lamps must be electrically powered by direct current (DC), contrary to conventional lamps which use standard AC power, and LED lamps must therefore comprise internal or external rectifier circuits which can be cumbersome and expensive.

Furthermore, in most of the LED lamps, several diodes must be assembled in a single lamp, because the light output of each light-emitting diode is usually small compared to conventional lamps.

However LEDs are damaged when they operate at high temperatures, although they generate themselves a great amount of heat, as also do the rectifier circuits. Known heat dissipation elements provided on the commercially available LED lamps are not efficient enough, and as a consequence, although initial costs of LED lamps are much higher than those of conventional lamps, the actual life expectancy of the commercially available LED lamps is rather short compared to their advertised nominal service life.

LED lamps must also be provided with bases identical to conventional lamps (E14, E27 or B22 for example) to be fully directly interchangeable with conventional lights, but the bases are not optimally adapted for heat dissipation elements.

Moreover, the commercially available LED lamps usually provide a non-dimmable, single colour temperature light, and expensive external controllers are necessary in order to be able to dim the light of the LED lamps. A complicated setting process is also necessary to establish a communication link between each of the LED lamps with the external controllers.

LEDs do not emit light in all directions, and the commercially available LED lamps have a poor spatial efficiency.

Embodiments of the present invention aim to ameliorate at least one of the above issues.

Aspects and preferred examples of the present invention are set out in the appended claims.

In one aspect, the invention provides a lamp comprising: a module, preferably fitted in a housing of the lamp, adapted to control at least one light-emitting diode, LED, of the lamp; a first heat sink adapted for dissipating heat generated by the module when the lamp is in operation; and a second heat sink adapted for dissipating heat generated by the LED when the lamp is in operation, wherein the second heat sink is different from the first heat sink.

The first heat sink may be in a first material; and the second heat sink may be in a second material, and the second material may be different from the first material. The first material may be a ceramic material, preferably porcelain, and the second material may be a metallic material, preferably aluminium. The first heat sink may comprise radiating fins, and the second heat sink may comprise radiating fins. The fins may be twisted along a longitudinal direction of the heat sink. The second heat sink may be mounted on the first heat sink, preferably using a plurality of bolts, placed in an inner periphery of a lower part of the second heat sink and cooperating with a plurality of nuts placed in recesses of holes in an inner periphery of an upper part of the first heat sink. The nuts may have a flat arcuate shape accommodating the module.

In another aspect, the invention provides a lamp comprising: a cover mounted on a housing; at least one light-emitting diode, LED; a module adapted to control the LED between at least two operation modes, wherein the LED is adapted to emit at least a first light at a first colour temperature when controlled to operate at a first operation mode, and a second light at a second colour temperature when controlled to operate at a second operation mode, and wherein the module is further adapted to operatively communicate with a remote controller adapted to enable a user to select an operation mode of the LED.

The module may comprise a wireless communication module to operatively communicate with the remote controller. The lamp may be configured to recognize a pairing sequence with the remote controller, preferably a sequence of pressing an operating portion of the remote, preferably five times in a given period. The lamp may be configured to recognize a decoupling sequence from the remote controller, preferably is a sequence of pressing an operating portion of the remote, preferably ten times in a given period. The lamp may be configured to acknowledge recognition of a pairing sequence and/or a decoupling sequence.

In another aspect, the invention provides a remote controller of a lamp, the lamp comprising: a cover mounted on a housing, at least one light-emitting diode, LED, and a module adapted to control the LED, wherein the remote controller is adapted to automatically recognize an advertisement message relating to the module, in order to enable the remote controller to operatively communicate with the module, thus enabling a user to select an operation mode of the LED.

The remote controller may comprise an imaging module adapted to recognize the advertisement message when the advertisement message comprises an optical reference of the module of the lamp, such as a code, a barcode or a matrix barcode; or may comprise a wireless module adapted to recognize the advertisement message when the advertisement message comprises a signal emitted by the module of the lamp, such as a Bluetooth message, a Wi-Fi message or an IEEE 802.15.4 message.

In another aspect, the invention provides a remote controller of a lamp, the lamp comprising: a cover mounted on a housing, at least one light-emitting diode, LED, and a module adapted to control the LED, wherein the remote controller comprises a module adapted to send to the module an advertisement message relating to the controller and a pairing sequence or decoupling sequence, in order to enable the remote controller respectively to operatively communicate with the module, thus enabling a user to select an operation mode of the LED, or decouple the controller and the module.

The pairing sequence may be a sequence of pressing an operating portion of the controller, preferably five times in a given period. The decoupling sequence may be a sequence of pressing an operating portion of the controller, preferably ten times in a given period. The remote controller may be comprised in a wall panel or adapted to be handheld by a user and removably attachable to a wall panel.

In another aspect, the invention provides a lamp comprising: a cover mounted on a housing; at least one light-emitting diode, LED, mounted on a board using single mounted diode, SMD, technology a module adapted to control the LED; and at least one heat sink adapted for dissipating heat generated by the module and/or the LED when the lamp is in operation; wherein the board is mounted in a recess of the housing in relation to the heat sink, such that the LED is flush in relation to where the cover is mounted on the housing.

The board may be mounted on the heat sink, preferably using a plurality of screws placed in an inner periphery of the board.

In another aspect, the invention provides a method for pairing or decoupling a remote controller with or from a module of a lamp, comprising: sending to the module an advertisement message relating to the controller and a pairing sequence or decoupling sequence, by pressing an operating portion of the controller, in order to enable the remote controller respectively to operatively communicate with the module, thus enabling a user to select an operation mode of the lamp, or decouple the controller and the module.

Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1A shows a partial section view of an example lamp embodying the present invention; Figure lB shows a profile view of the example lamp of Figure 1A; Figure 1C shows a view of the bottom of the example lamp of Figure 1A; Figure 1 D shows an elevation view of the example lamp of Figure 1A; Figure 2A shows an elevation view of the housing of the example lamp of Figure 1A; Figure 2B shows a scattered view of the example lamp of Figure 2A, where the second heat sink, preferably comprising only one piece, is scattered in two elements; Figure 3 shows an elevation view of an example second heat sink embodying the present invention, where Figure 3A shows an elevation view of the second heat sink embodying the present invention; Figure 3B shows an elevation section view of the heat sink of Figure 3A; Figure 30 shows a section view of the heat sink of Figure 3A; Figures 4A and 4B show different types of bases; Figure 5A shows a section view of an example first heat sink; Figures 5B and 5D show a view of the top of the example first heat sink of Figure 5A; Figure 50 shows an elevation view of the example first heat sink of Figure 5A; Figures SE and SF show example nuts placed in the heat sinks of Figures 5A and 50; Figures 6A, 6B and 60 show a section view of another example first heat sink; Figure 6D shows a view of the top of the example first heat sink of Figures 6A, 6B and 60; Figure 6E shows example nuts placed in the heat sinks of Figures 6A, 6B and 60; Figure 7A shows a partial scattered view of the example lamp of Figure 1A; Figure 7B shows an elevation view of a LED used in the example lamp of Figure 7A; Figures 70 to 70 show different views of the LED of Figure 7B; Figure BA shows a partial scattered view of the example lamp of Figure 1A; Figures 8B to 8D show different side views of the processor of Figure 8A; Figure 8E shows a very schematic functional representation of the processor of Figure BA; Figure 9 shows an elevation view of a remote controller embodying the invention; and Figure 10 shows an elevation view of a control panel comprising two remote controllers, i.e. a static controller and a removable controller.

With reference to the drawings in general, it will be appreciated that the Figures are not necessarily to scale, and that for example relative dimensions may have been altered in the interest of clarity in the drawings. All the dimensions are shown as examples, and it will be appreciated that other dimensions are possible. Also any functional block diagrams are intended simply to show the functionality that exists within the lamp and should not be taken to imply that each block shown in the functional block diagram is necessarily a discrete or separate entity. The functionality provided by a block may be discrete or may be dispersed throughout the lamp or throughout a part of the lamp. In addition, the functionality may incorporate, where appropriate, hard-wired elements, software elements or firmware elements or any combination of these.

Referring now to the drawings, an example LED (light-emitting diode) lamp (or light bulb) will be described which mainly comprises a cover 5 mounted on a housing 11, and at least one LED 9.

In embodiments, the cover 5 has preferably a hemispherical shape, but it is understood that any type of shapes suitable for lamps is possible, such as prism-like shapes (possibly comprising lateral recesses and a distal tit), flame-like shapes, etc. The cover 5 is preferably made out of opaque polycarbonate (which is recyclable and does not break easily), but may also be made out of any other plastic material -or very less preferably out of glass (which breaks). The cover 5 may also be less preferably sandblasted. Information regarding the features of the lamp, such as at least one of the following: electrical power, luminance, reference number of the lamp or a part of the lamp, trade mark, etc, may be written on the surface of the cover 5, for example in a distal (or vertex) region 51 of the cover 5 (preferably at least the trade mark of the lamp) and/or in a proximal region 52 of the cover 5 (preferably the reference of the lamp), by any process known by the person skilled in the art, such as printing. In the base region, the cover 5 also comprises a belt 50 of lower diameter formed by a shoulder in the proximal region 52, so that it can be tightly fitted in the housing 11.

The housing 11 mainly comprises: a heat sink top 2, at least one heat sink, i.e. a first heat sink 1 and/or a second heat sink 3, adapted for dissipating heat generated by elements of the lamp when the lamp is in operation, and a base 8.

The top 2 comprises a disc plate 20 and a peripheral rim 21. As it will be appreciated from Figure IA, an inner surface of the rim 21 is adapted to closely cooperate with an outer surface of the belt 50, so that the cover 5 is solidarily mounted on the housing 11, and also protected from shocks in the proximal region 52 by the rim 21. The top 2 is preferably cast in one piece with the heat sink 3. The cover 5 and/or the rim 21 are slightly chamfered where they cooperate, so that there is no asperity in their cooperation region.

The LED 9 is mounted on a board 4, preferably placed on the plate 20. The board 4 will be described in greater detail below.

The board 4 and the plate 20 respectively comprise holes 42 and 22 located in an inner periphery if the board 4 and the plate 20, and accommodating screws 6. The screws 6 cooperate with threaded holes 36 located in an inner periphery of an upper part 31 of the second heat sink 3. As it will be appreciated from Figure 1A, in this example embodiment, the board 4 is mounted in a recess 110 of the housing 11 in relation to the heat sink, i.e. the top 2 of the heat sink 3, such that the LED 9 is flush in relation to where the cover 5 is mounted on the housing 11, i.e. the proximal region 52. This enables the LED 9 to emit light in more directions (and not shadowed by the rim 21 for example), and thus provides a LED lamp having an enhanced spatial efficiency.

As it will be apparent from Figure 2B, the lamp preferably comprises three screws 6 regularly spaced apart along the inner peripheries of the board 4 and the plate 20, but it is understood that any number of screws is possible.

The second heat sink 3 comprises an inner recess 33, open in a bottom part 37 opposite the top 2.

The bottom part 37 of the inner recess 33 comprises holes 35, located in an inner periphery of the bottom part 37, i.e. in a lower part 32 of the second heat sink 3, and accommodating bolts 7 adapted to enter holes 71 located in an inner periphery of an upper part 13 of the first heat sink 1. As it will be appreciated from Figures 5A, 6B and 6C, the bolts 7 are adapted to cooperate with nuts 72 placed in lateral recesses 73 of the holes 71. Bots 7 and nuts 72 (preferably made out of metallic material) are preferred to screws because it might be difficult to tap or mould threaded holes in the material of the first heat sink 1 as explained in further detail below. An outer surface of the lower part 32 of the second heat sink 3 also preferably cooperates with an inner surface of a peripheral lip 17 located in the upper part 13 of the first heat sink 1, in order to enhance cooperation between the two heat sinks 1 and 3.

The first heat sink 1 comprises an inner recess 14, open in a lower part 18 opposite the heat sink 3.

The lower part 18 of the first heat sink 1 is adapted to cooperate with the base 8, in turn adapted to fit in a lamp socket linked to conventional AC power. The base 8 is preferably made out of metal. At least an indentation forming a pit is formed in the lower part 18 (but three pits regularly circularly spaced apart are preferably formed), and the material of the base 8 is squeezed in the pits on the heat sink 1, to enhance cooperation of the base Band the heat sink 1. Silicon may be added on the lower part 18 before squeezing the baseS, to enhance tightness of the cooperation and resistance to moist.

As it will be also appreciated from Figures 4A and 4B, the base 8 may be of different types and diameters, such as bayonet fitting (i.e. e.g. B22) or threaded fitting (i.e. e.g. ESIE27). It will be understood that other types of fittings may also be possible for the base 8 (such as other types of threaded or bayonet fittings (such as BA, BY, MR, GU, GZ, etc.) with suitable dimensions, as known by the skilled person in the art).

As it will be appreciated from Figure 7, the lamp may comprise any number of LEDs 9, depending on the application and the desired luminance, but the lamp preferably comprises a plurality of LEDs 9 mounted on the board 4, for example typically any number between 6 and 20 LEDs on the board, typically 14 LEDs 9.

In embodiments, the LEDs 9 are mounted on the board 4 using the known single mounted diode technology, SMD, typically in series, for a typical total voltage of 24V, and the function of the board 4 is to provide the electrical connections to the plurality of the LEDs 9.

As it will be appreciated in Figure 8, the lamp also comprises a module 10, preferably fitted in the housing 11, preferably in the recess 14 of the heat sink 1 (the recess 33 is preferably left empty, but could accommodate at least a part of the module 10 if need be in some less preferred embodiments).

The module 10 is adapted to control the LED 9 of the lamp using electrical connections through the recess 33 and central holes 23 and 43 in the plate 20 and the board 4 respectively.

The module 10 is adapted to include: a driver adapted to power on or off the LED 9 responsive to a power switch, and optionally to dim the LED 9 (when the LEDs are preferably all mounted in series on the board 4, the LEDs of one lamp are all powered simultaneously); a transformer adapted to transform standard AC power into DC power which can be used by the LED 9 (the transformer may be analogue or digital), and optionally an integrated circuit IC adapted to enhance the control of the LED 9, as explained below (the transformer may be at least partially a part of the IC in some non-limiting embodiments).

In examples, the module 10 comprises a printed circuit board comprising, among other components known by the skilled person, a processor 101 (as shown in Figures 8B, SC, 8D and SE) comprising e.g. ten pins ito 10.

In examples, the module 10 may present any one of the following features: a primary inductance of 1.95mH ± 10%; a winding Ni: 0 0.2*1 p 2UEW 73T; and/or a winding N2: 00.25*1p2UEW 33T; and/or a winding N3: 0 0.2*lp 2UEW 57T; and/or a winding N4: 00.15*1p2UEW 30T; and/or a winding N5: 00.i5*1p2UEW 1ST; and/or a resistance from primary to secondary and from primary to core = 100MQ at 500V DC; and/or a dielectric strength from primary to secondary = AC 2kV 5mA/i Mm; and/or a dielectric strength from primary to core = AC 0.5kv 5mAi Mm.

When the lamp is in operation, the LED or the plurality of LEDs 9 generates heat, and the module 10 also generates heat. The first heat sink 1 and the second heat sink 3 are therefore adapted for dissipating the generated heat. The module 10 may generate more heat than the LEDs 9, and therefore in embodiments the second heat sink 3 is different from the first heat sink 1.

In embodiments the first heat sink 1 is in a first material; and the second heat sink 3 is in a second material, and the second material is different from the first material. The heat sink 1 and the heat sink 3 are preferably formed of an integral piece, respectively. The first material may be a ceramic material, preferably porcelain, and the second material may be a metallic material, preferably aluminium.

As it will be appreciated from Figures SB and 5D, in embodiments the first heat sink 1 preferably comprises radiating fins 12. For a 7.5W lamp, e.g. 30 fins of 1.9mm thickness are provided on the first heat sink 1, in order to dissipate efficiently the heat generated by the module 10.

As it will be appreciated from Figures 3A to 3C, in embodiments the second heat sink 3 preferably comprises radiating fins 34. For a 7.5W lamp, e.g. 40 fins of 0.75mm thickness are provided on the second heat sink 3, in order to dissipate efficiently the heat generated by the LEDs. Preferably, to further enhance heat dissipation, the fins 34 are twisted along a longitudinal direction Z of the heat sink 3, in order to further their length and surface effective for heat dissipation.

As a non-limiting example, for a lamp of nominal power of 7.5W, with a voltage of 230V at 50Hz and with an ambient temperature of 32°C, the temperatures of the elements of the lamp are as follows: the cover 5 is 41.6°C, the top 2 is 60°C, the upper part 31 of the heat sink 3 is 70°C, the lower part 32 of the heat sink 3 is 65°C, the upper part 13 of the heat sink 1 is the 63°C, and the lower part 18 of the first that heat sink 1 is 60°C.

The heat sinks 1 and 3 provide therefore efficient heat dissipation.

As explained above, the module 10 is also adapted to control the LED 9 which is adapted to emit light having a wavelength which may be comprised between 380 nm and 740 nm, each of these wavelengths having a colour temperature which may be comprised between 1000K and 8000K.

Preferably the LED 9 can be controlled to have a chosen wavelength and/or a chosen colour temperature, the wavelength or the colour temperature being chosen and/or changed within a continuum or within one or more subsets of wavelengths or colour temperatures, when controlled into a chosen operation mode.

To that effect, the LEDs may comprise a mix of LEDs (such as a mix of Red Green Blue (RGB) LEDs), but the LEDs 9 are preferably tuneable colour LEDs, and present any one of the following features: GaN/A1203 type; and/or -40°C <operating temperature < +85°C; and/or 4.99 C lv (luminous intensity, in ccl) C 6.72; and/or -10- 2.8 <VE (forward voltage, in V) <3.3.

It is understood that the LED may alternatively have only a single colour (such as white colour, but other single colours are possible), with only one colour temperature or with a predetermined subset of colour temperatures or with any number of subsets of colours, or with a continuum of colour temperatures.

The module 10 is thus further adapted to control the LED into the desired operation modes, for example by voltage supply bias of the LED.

Preferably, the reference of the lamp, which is also marked in the proximal region 52 of the cover 5, is marked on the module 10 for quality/commercial tracking purposes.

In embodiments the module 10 is further adapted to operatively communicate with a remote controller 100 as shown in Figure 9.

The remote controller 100 is adapted to enable a user to select an operation mode of the LED 9 (such as on/off mode, specific colour and/or colour temperature operation mode, or dimmed mode, etc.). To that effect, the remote controller 100 preferably comprises processing means, a main on/off switch 101, and/or a dim and/or colour temperature switch 102, and/or one or more auxiliary on/off switches 104, and a communication module 300, preferably wireless, as explained below.

In embodiments, the module 10 comprises a wireless communication module 103 to operatively communicate with the remote controller 100. Preferably the communication module 103 is always active when the lamp is suitably fitted in a lamp socket connected to a central power supply. The module 103 can use any protocol known by the person skilled in the art, such as radio frequency (High Frequency), such as ISM/CE standard 2.40Hz RF, Bluetooth, Wi-Fi message or IEEE 802.15.4 protocols.

In embodiments, the remote controller 100 is adapted to form a pair with the communication module 103 of the module 10, as explained below.

In embodiments, the remote controller 100 is adapted to automatically recognize an advertisement message relating to the module 10 and containing information enabling the controller 100 to control the module 10 into a chosen operation mode. The information may be comprised in an optical message, such as a code, a barcode or a matrix barcode, for instance on the cover or on a packaging of the lamp. The remote controller 100 may therefore comprise an imaging module 200 adapted to recognize the information. The information is then transmitted to processing means of the remote controller 100. The information may also be comprised in a signal emitted by the module 10 of the lamp (for example via the module 103), such as a radio frequency message, a Bluetooth message, a Wi-Fi message or an IEEE 802.15.4 message. The remote controller 100 may therefore comprise a module 300 adapted to recognize the advertisement message. It is understood that once the advertisement message containing information relating to the module 10 is recognized, the remote controller 100 is enabled to operatively communicate with the module 10, thus enabling a user to select an operation mode of the LED via the remote 100.

In embodiments, in order to form a pair between the controller 100 and a chosen module 10, the user: switches on the chosen module 10 (e.g. by suitably fitting the lamp in a lamp socket and using a corresponding central switch, e.g. fitted on a main lead or on a wall) and places the chosen module 10 in the controller's range; and switches off (e.g. by removing the corresponding lamp from the lamp socket) or puts out of the controller's range the other modules which the user does not want to pair with the controller.

The user then operates an operating portion of the remote controller 100 (such as the colour temperature or a dimming switch 102, preferably a chosen auxiliary on/off switch 104), in order to control a module 300 of the controller 100 to send an advertisement message relating to the controller 100 (such as a radio frequency message, a Bluetooth message, a Wi-Fi message or an IEEE 802.15.4 message, preferably a ISM/CE standard 2.4GHz RF message, comprising identification of the corresponding controller) and containing information enabling the module 10 to be controlled into a chosen operation mode by the controller 100.

A pairing instruction may be given to the module 10 by pressing the operating portion a number of times, corresponding to a pairing sequence (for example five times in a predetermined shod time, e.g. less than five seconds).

The communication module 103, which is always listening when the lamp is connected to a power supply, in order to receive messages from the module 300, recognizes both the advertisement message from the controller 100 and the pairing sequence.

The user then reboots the module 10 to update it, by switching it off and on again, using the corresponding central switch (e.g. fitted on a main lead or on a wall).

When the module 10 is rebooted and is thus updated, it is paired with the controller 100, and the module 10 preferably acknowledges pairing to the user, e.g. preferably by controlling the LED 9 of the -12-lamp to flash a certain number of times, e.g. five times, so the user knows that the module 10 is paired with the controller 100.

In embodiments, the sending of both the advertisement message and the pairing instruction, and the rebooting of the module 10 may be performed several times before the pairing is effective.

Once the pairing is effective, the controller 100 and the module 10 form a pair, and the module 10 will thus accept controlling instructions from the remote controller 100 (such as on/off (from the main switch 101 or the corresponding auxiliary switch 104), or dim or colour temperature instructions from the switch 102).

Conversely, the paired remote controller 100 and module 10 may be decoupled, as explained below.

In order to decouple the pair comprising the chosen module 10 and the controller 100, the user: switches on the chosen module 10 (e.g. by using a corresponding central, main or auxiliary switch, e.g. fitted on a main lead or on a wall, or on the controller 100, respectively) and places the chosen module 10 in the controller's range; and switches off (e.g. by removing the corresponding lamp from the lamp socket) or puts out of the controllers range the other modules which the user does not want to decouple.

The user then operates an operating portion of the remote controller 100 (such as the colour temperature or a dimming switch 102, preferably the auxiliary on/off switch 104), in order to control the module 300 of the controller 100 to send an advertisement message relating to the controller 100 (such as a radio frequency message, a Bluetooth message, a Wi-Fi message or an IEEE 802.15.4 message, preferably a ISM/CE standard 2.4GHz RF message, comprising identification of the controller).

A decoupling instruction may be given to the module 10 by pressing the operating portion a number of times, corresponding to a decoupling sequence (for example ten times in a predetermined shod time, e.g. less than five seconds).

The communication module 103, which is always listening when the lamp is connected to a power supply, in order to receive messages from the module 300, recognizes both the advertisement message from the controller 100 and the decoupling sequence.

The user then reboots the module 10 to update it, by switching it off and on again, using the corresponding central switch (e.g. fitted on a main lead or on a wall). -13-

When the module 10 is rebooted and thus updated, itis decoupled from the controller 100, and the module 10 preferably acknowledges decoupling to the user, e.g. preferably by controlling the LED 9 of the lamp to flash a certain number of times, e.g. ten times (other numbers are possible), so the user knows that the module 10 is decoupled from the controller 100.

In embodiments, the sending of both the advertisement message and the decoupling instruction, and the rebooting of the module 10 may be performed several times before the decoupling is effective.

Once the decoupling is effective, the controller 100 and the module 10 are decoupled, and the module 10 will thus not accept controlling instructions from the remote controller 100 anymore (such as on/off (from the main switch 101 or the corresponding auxiliary switch 104), or dim or colour temperature instructions from the switch 102).

The pairing or decoupling sequences according to the invention are therefore made easy, convenient and efficient, even with a limited number of switches on the remote controller 100.

As it will be appreciated from Figure 9, in embodiments the remote controller 100 comprises several independent control channels (or circuits), e.g. 400, 500, 600. Although three channels are shown, any number of channels may be comprised in the remote controller 100, such as for example four channels or more.

It is appreciated that information in each advertisement message from a module 10 may be related to a specific module 10, and the controller 100 of Figure 9 may thus be adapted to control the operation mode of several lamps independently, i.e. a specific module 10 per control channel 400, 500, or 600.

Similarly, it is appreciated that information in each advertisement message from a control channel 400, 500, or 600 of the controller 100 may be related to the specific control channel, and each channel of the controller 100 of Figure 9 may thus be adapted to control the operation mode of several lamps independently from the other channels, i.e. one or more lamps being paired with a specific channel 400, 500 or 600. As a non-limiting example, up to 25 lamps may be controlled simultaneously by one channel, and it is understood that one controller 100 with three channels may then control e.g. a total of 75 lamps, each channel 400, 500 or 600 controlling independently e.g. 25 lamps simultaneously.

The user may set (e.g. using the switch 102) e.g.: the colour temperature and/or dimming for a first lamp or set of lamps using the channel 400 -14- (whilst the channels 500 and 600 are switched off), the colour temperature and/or dimming for a second lamp or set of lamps using the channel 500 (whilst the channels 400 and 600 are switched oft), the colour temperature and/or dimming for a third lamp or set of lamps using the channel 600 (whilst the channels 400 and 500 are switched off).

In embodiments, the module 10 keeps the last settings (such as colour and/or colour temperature and/or dimming) in a non-volatile memory. Thus when a user switches off and on again all the lights, e.g. using the main switch 101, the lamps are lit using the last settings and the user does not need to set the lamps again.

Similarly and as can be appreciated from Figure 10, information in each advertisement message may be related to a corresponding control channel 400, 500, or 600 of a plurality of controllers 100, and a same module 10 may be thus controlled by a control channel 400, 500, or 600 of a first controller 100 and by a corresponding control channel 400, 500, or 600 of a second controller 100. This thus provides more flexibility and convenience for the user.

In embodiments, a panel 1000, which is preferably placed on a wall of a room comprising the lamp, comprises: a first part 1001 comprising a first remote controller 100, preferably cast in a single piece with the panel 1000 (i.e. the first remote controller cannot thus be moved by the user, and the user then always knows where the first remote controller is located); and a second part 1002 comprising a holder (e.g. comprising a recess) where a second remote controller 100, preferably which can be handheld by the user, may be removably attached to the holder, for example using a movable clip or any other type of removable attachment means for the second remote controller 100.

As can be seen in Figure 10, the first part 1001 and the second part 1002 may control the same module 10, which provides more flexibility and convenience for the user.

Modifications and Variations Various features described above may have advantages with or without other features described above.

The above embodiments are to be understood as illustrative examples of the invention. Further embodiments of the invention are envisaged. It is to be understood that any feature described in relation to any one embodiment may be used alone, or in combination with other features described, -15-and may also be used in combination with one or more features of any other of the embodiments, or any combination of any other of the embodiments. Furthermore, equivalents and modifications not described above may also be employed without departing froni the scope of the invention, which is defined in the accompanying claims. -16-

Claims

CLAIMS1. A lamp comprising: a module (10) fitted in a housing (11) of the lamp and adapted to control at least one light-emitting diode (9), LED, of the lamp; a first heat sink (1) adapted for dissipating heat generated by the module (10) when the lamp is in operation; and a second heat sink (3) adapted for dissipating heat generated by the LED when the lamp is in operation, wherein the second heat sink is different from the first heat sink.
2. The lamp of claim 1, wherein the first heat sink (1) is in a first material; and the second heat sink (3) is in a second material, and wherein the second material is different from the first material.
3. The lamp of claim 2, wherein the first material is a ceramic material, preferably porcelain, and wherein the second material is a metallic material, preferably aluminium.
4. The lamp of any one of claims ito 3, wherein the first heat sink (1) comprises radiating fins (12).
5. The lamp of any one of claims ito 4, wherein the second heat sink (3) comprises radiating fins (34).
6. The lamp of claim 5, wherein the fins (34) are twisted along a longitudinal direction of the heat sink (3).
7. The lamp of any one of claims ito 6, wherein the second heat sink (3) is mounted on the first heat sink (1), preferably using a plurality of bolts (7), placed in an inner periphery of a lower pad (32) of the second heat sink (3) and cooperating with a plurality of nuts (72) placed in recesses (73) of holes (71) in an inner periphery of an upper pad of the first heat sink (1).
8. The lanip of claim 7, wherein the nuts (72) have a flat arcuate shape accommodating the module (10). -17-
9. A lamp comprising: a cover (5) mounted on a housing (11); at least one light-emitting diode (9), LED; a module (10) adapted to control the LED between at least two operation modes, wherein the LED is adapted to emit at least a first light at a first colour temperature when controlled to operate at a first operation mode, and a second light at a second colour temperature when controlled to operate at a second operation mode, and wherein the module (10) is further adapted to operatively communicate with a remote controller (100) adapted to enable a user to select an operation mode of the LED.
10. The lamp of claim 9, wherein the module (10) comprises a wireless communication module (103) to operatively communicate with the remote controller (100).
11. The lamp of any one of claims 9 or 10, configured to recognize a pairing sequence with the remote controller (100), preferably a sequence of pressing an operating portion (104) of the remote, preferably five times in a given period.
12. The lamp of any one of claims 9 to 11, configured to recognize a decoupling sequence from the remote controller (100), preferably is a sequence of pressing an operating portion (104) of the remote, preferably ten times in a given period.
13. The lamp of any one of claims 9 to 12, configured to acknowledge recognition of a pairing sequence and/or a decoupling sequence.
14. A remote controller (100) of a lamp, the lamp comprising: a cover (5) mounted on a housing (11), at least one light-emitting diode (9), LED, and a module (10) adapted to control the LED, wherein the remote controller (100) is adapted to automatically recognize an advertisement message relating to the module (10), in order to enable the remote controller (100) to operatively communicate with the module (10), thus enabling a user to select an operation mode of the LED.
15. The remote controller of claim 14, comprising an imaging module (200) adapted to recognize the advertisement message when the advertisement message comprises an optical reference of the module (10) of the lamp, such as a code, a barcode or a matrix barcode. -18-
16. The remote controller of claim 14, comprising a wireless module (300) adapted to recognize the advertisement message when the advertisement message comprises a signal emitted by the module (10) of the lamp, such as a Bluetooth message, a Wi-Fi message oran IEEE 802.15.4 message.
17. A remote controller (100) of a lamp, the lamp comprising: a cover (5) mounted on a housing (11), at least one light-emitting diode (9), LED, and a module (10) adapted to control the LED, wherein the remote controller (100) comprises a module (300) adapted to send to the module (10) an advertisement message relating to the controller (100) and a pairing sequence or decoupling sequence, in order to enable the remote controller (100) respectively to operatively communicate with the module (10), thus enabling a user to select an operation mode of the LED, or decouple the controller (100) and the module (10).
18. The remote controller of claim 17, wherein the pairing sequence is a sequence of pressing an operating portion (104) of the controller, preferably five times in a given period.
19. The remote controller of any one of claims 17 or 18, wherein the decoupling sequence is a sequence of pressing an operating portion (104) of the controller, preferably ten times in a given period.
20. The remote controller of any one of claims 14 to 19, comprised in a wall panel (1000) or adapted to be handheld by a user and removably attachable to a wall panel (1000).
21. A lamp comprising: a cover (5) mounted on a housing (11); at least one light-emitting diode (9), LED, mounted on a board (4) using single mounted diode, SMD, technology a module (10) adapted to control the LED; and at least one heat sink (1, 2, 3) adapted for dissipating heat generated by the module (10) and/or the LED (9) when the lamp is in operation; wherein the board (4) is mounted in a recess (110) of the housing (11) in relation to the heat sink (1, 2, 3), such that the LED (9) is flush in relation to where the cover (5) is mounted on the housing (11).
22. The lamp of claim 21, wherein the board (4) is mounted on the heat sink (1, 2, 3), -19-preferably using a plurality of screws (6) placed in an inner periphery of the board (4).
23. A method for pairing or decoupling a remote controller (100)with or from a module (10) of a lamp, comprising: sending to the module (10) an advertisement message relating to the controller (100) and a pairing sequence or decoupling sequence, by pressing an operating portion (104) of the controller, in order to enable the remote controller (100) respectively to operatively communicate with the module (10), thus enabling a user to select an operation mode of the lamp, or decouple the controller (100) and the module (10).