EP3651555A1 - Rechargeable lamp module with charging terminal - Google Patents

Abstract

The present invention relates to a rechargeable lamp module (102) comprising: at least one light source; a controller ; and first, second and third electrical contacts intended to be brought into electrical contact with corresponding contacts of a charging station (104), the first electrical contact being coupled to a first supply voltage rail of the rechargeable lamp module , the second contact being coupled to a second supply voltage rail of the rechargeable lamp module, and the third electrical contact being coupled to an input of the controller, the controller being configured to turn on and off said at least one light source from a voltage signal supplied via the third electrical contact.

Description

Technical area

The present invention relates generally to the field of rechargeable lamps and in particular to a rechargeable lamp module and a charging station.

Prior art

Indoor or outdoor rechargeable lamps provide a versatile lighting solution. Certain types of rechargeable lamps may include a rechargeable lamp module and a charging station.

The rechargeable lamp module includes a light source, such as one or more light-emitting diodes (LEDs), a diffuser for diffusing the light produced by the light source and a rechargeable battery for powering the light source. .

The charging station includes an electric cable, such as an AC power cable or a USB (Universal Serial Bus) cable, as well as a connection interface to supply supply and ground voltages to the rechargeable lamp module when it is placed on the charging station.

During a mode of use, the rechargeable lamp module is placed in the environment to be lit, away from the charging station, and is powered by its integrated battery. A switch on the rechargeable lamp module allows for example to switch the light source on or off. For aesthetic reasons, the switch is for example positioned on a lower side of the rechargeable lamp module and is thus hidden from view during this mode of use. The interface of connection for electrically connecting the rechargeable lamp module to the charging station is also for example positioned on the lower side of the rechargeable lamp module and is thus hidden from view.

It would be desirable to allow the rechargeable lamp module to also be used while it is placed on the charging station, so as to be able to illuminate the environment of the charging station. However, due to the position of the switch and the connection interface of the rechargeable lamp module on its lower side, switching on or off the light source requires removing the rechargeable lamp module from its terminal to access the switch, then replace the rechargeable lamp module on the charging station. Such operation is relatively cumbersome, and there is a need in the art for a new technical solution making it possible to switch the rechargeable lamp module on or off when it is positioned on the charging station.

Summary of the invention

There exists in the art the need for a lamp module and a charging station meeting one or more of the needs of the prior art.

According to one embodiment, the present invention provides a rechargeable lamp module comprising: at least one light source; a controller ; and first, second and third electrical contacts intended to be brought into electrical contact with corresponding contacts of a charging station, the first electrical contact being coupled to a first supply voltage rail of the rechargeable lamp module, the second contact being coupled to a second supply voltage rail of the rechargeable lamp module, and the third electrical contact being coupled at an input of the controller, the controller being configured to switch on and off said at least one light source on the basis of a voltage signal supplied via the third electrical contact.

According to one embodiment, the controller is configured to detect a voltage transition or a voltage pulse delivered on the third electrical contact.

According to one embodiment, the controller is configured to switch on said at least one light source in response to the detection of a first voltage transition or of a first voltage pulse delivered via the third electrical contact and to switch off said at least one light source in response to the detection of a second voltage transition or of a second voltage pulse delivered via the third electrical contact.

According to one embodiment, the rechargeable lamp module comprises first and second light sources, the controller being configured so as: to turn on the first light source in response to the detection of a first voltage transition or of a first pulse voltage delivered via the third electrical contact; and turning on the second light source in response to the detection of a second voltage transition or a second voltage pulse delivered through the third electrical contact.

According to one embodiment, the controller is further configured to switch off the first and second light sources in response to the detection of a third voltage transition or of a third voltage pulse delivered via the third electrical contact. , or in response to an extended voltage pulse of duration equal to or greater than a threshold time period.

According to one embodiment, the rechargeable lamp module further comprises a switch, one of the terminals of which is coupled to the input of the controller and the other terminal of which is coupled to the second supply voltage rail, the switch being for example a normally open or normally closed push button switch.

According to one embodiment, the first, second and third electrical contacts are each formed by a corresponding pad from among: a central contact pad; a first annular contact pad encircling the central contact pad; and a second annular contact pad encircling the central contact pad and the first annular contact pad.

According to one embodiment, the rechargeable lamp module comprises a diffuser on which are mounted one or more elements associated with a cartoon character.

According to another aspect, the present invention provides a charging station comprising: a switch for switching on and off at least one light source from a rechargeable lamp module; and first, second and third electrical contacts intended to be brought into electrical contact with corresponding electrical contacts of the rechargeable lamp module, the first electrical contact being coupled to a first supply voltage rail of the charging station, the second electrical contact being coupled to a second supply voltage rail of the charging station and the third electrical contact being coupled to a terminal of the switch.

According to one embodiment, the first terminal of the switch is also coupled to the first voltage rail supply and a second switch terminal is coupled to the second supply voltage rail and the switch is for example a normally open or normally closed push button switch.

According to one embodiment, the first, second and third electrical contacts are each formed by an elastic metal pin.

According to another aspect, the present invention provides a lamp comprising the above rechargeable lamp module and the above charging station.

According to yet another aspect, the present invention provides a method for controlling at least one light source of a rechargeable lamp module while the rechargeable lamp module is placed on a charging station, the rechargeable lamp module comprising first, second and third electrical contacts intended to be respectively brought into contact with the first, second and third electrical contacts of the charging station, the first electrical contact being coupled to a first supply voltage rail of the rechargeable lamp module, the second electrical contact being coupled to a second supply voltage rail of the rechargeable lamp module and the third electrical contact delivering a voltage signal, this method comprising: the detection, by a controller of the rechargeable lamp module, of a voltage transition or pulse on the third electrical contact; and switching on or off said at least one light source in response to the detection of the voltage transition or pulse.

Brief description of the drawings

• la figure 1 est une vue en perspective d'une face avant d'une lampe selon un exemple de réalisation de la présente invention ;
• la figure 2 est une vue en perspective d'une face arrière de la lampe de la figure 1 selon un exemple de réalisation de la présente invention ;
• la figure 3 est une vue en perspective d'une borne de recharge de la lampe des figures 1 et 2 selon un exemple de réalisation de la présente invention ;
• la figure 4 représente une vue de dessus et une vue de côté d'une borne de recharge de la lampe des figures 1 et 2 selon un exemple de réalisation de la présente invention ;
• la figure 5 est une vue de dessous d'un module de lampe rechargeable de la lampe des figures 1 et 2 selon un exemple de réalisation de la présente invention ; et
• la figure 6 illustre schématiquement des circuits de la borne de recharge et du module de lampe rechargeable de la lampe des figures 1 et 2 selon un exemple de réalisation de la présente invention

These and other features and advantages will be discussed in detail in the following description of modes. of specific embodiments made without limitation in relation to the attached figures among which:

• the figure 1 is a perspective view of a front face of a lamp according to an exemplary embodiment of the present invention;
• the figure 2 is a perspective view of a rear face of the lamp of the figure 1 according to an exemplary embodiment of the present invention;
• the figure 3 is a perspective view of a charging station for the lamp of the Figures 1 and 2 according to an exemplary embodiment of the present invention;
• the figure 4 represents a top view and a side view of a charging station for the lamp Figures 1 and 2 according to an exemplary embodiment of the present invention;
• the figure 5 is a bottom view of a rechargeable lamp module of the lamp Figures 1 and 2 according to an exemplary embodiment of the present invention; and
• the figure 6 schematically illustrates circuits of the charging station and of the rechargeable lamp module of the lamp Figures 1 and 2 according to an exemplary embodiment of the present invention

Description of the embodiments

The same elements have been designated by the same references in the various figures. In particular, the structural and / or functional elements common to the various embodiments may have the same references and may have identical structural, dimensional and material properties.

For reasons of clarity, only the operations and the elements useful for understanding the embodiments described here have been illustrated and described in detail. In particular, the joints, some of which are for example hermetic, between the various components of the lamp module, such as between a diffuser and a base part of the lamp module, have not been described in detail, such joints being the scope of those skilled in the art.

Unless otherwise indicated, the term "connected" is used to denote a direct electrical connection between circuit elements, while the term "connected" or "coupled" is used to denote an electrical connection between circuit elements which may be direct or be done through one or more elements. Unless otherwise indicated, when the term "coupled" is used in the description which follows, the connection can be implemented by a direct connection.

In the description which follows, unless otherwise indicated, when reference is made to qualifiers for absolute position such as "front", "rear", "up", "down", "left", "right", etc. or relative position qualifiers such as "above", "below", "upper", "lower", etc. or to orientation qualifiers such as "horizontal", "vertical", etc., reference is made to the orientation shown in the figures, or to a rechargeable lamp as oriented in normal use.

Unless otherwise specified, the terms "approximately", "approximately", "substantially" and "on the order of" mean to the nearest 10%, preferably to the nearest 5%.

The figure 1 is a perspective view of a front face of a lamp 100 according to an exemplary embodiment of the present invention. The lamp 100 comprises a rechargeable lamp module 102 and a charging station 104. The charging station 104 comprises a switch 106. The switch 106 is for example a push button switch, such as a normally open switch which creates an electrical contact when pressed and breaks this electrical contact when released. Alternatively, the switch 106 could be a normally closed switch which breaks the electrical contact when pressed and creates the electrical contact when released.

The visible part of the rechargeable lamp module 102 of the figure 1 corresponds for example to a diffuser 108 for diffusing the light emitted by at least one light source mounted in the rechargeable lamp module and not visible to the figure 1 . Although this is not illustrated in the figure 1 , one or more elements associated with a cartoon character can be mounted on the diffuser 108. Although this is not shown in the figure 1 , the rechargeable lamp module 102 comprises for example a rechargeable battery supplying the at least one light source.

The switch 106 of the charging station 104 enables the at least one light source of the rechargeable lamp module 102 to be turned on or off.

The figure 2 is a perspective view of a rear face of the lamp 100 of the figure 1 . As the figure 2 , the charging station 104 comprises for example an electric cable 202 equipped with a socket 204 allowing the connection of the charging station 104 to an external power source, such as a mains socket, or a USB socket (not represented in the figure 2 ).

The figure 3 is a perspective view of the charging station 104 of the lamp 100 of the Figures 1 and 2 . As the figure 3 , the charging station 104 comprises for example a base part 302 having, at its upper surface, an element 304 configured to engage with a corresponding element of the rechargeable lamp module for align the rechargeable lamp module 102 with the charging station 104 when the rechargeable lamp module 102 is placed on the charging station 104.

The figure 4 shows a top view and a side view of the charging station 104 of the lamp 100 Figures 1 and 2 according to an exemplary embodiment.

As shown in the top view, the electrical contacts 402, 404 and 406 are for example positioned on the upper side of the charging station 104. In the example of the figure 4 , the element 304 is an annular rib and the electrical contacts 402, 404 and 406 are produced by metal pins positioned inside the annular rib 304. Each of the metal pins 402, 404 and 406 is for example elastic to facilitate the electrical connection with a corresponding electrical contact of the rechargeable lamp module 102. The contact pin 402 is for example positioned at a central location with respect to the alignment element 304 and the contact pins 404 and 406 are positioned at different axial distances from the central spindle 402. In the example of the figure 4 , the pins 402, 404 and 406 are aligned, the pins 404 and 406 being positioned on opposite sides with respect to the central pin 402, even if different arrangements are possible.

The electrical contacts 402, 404 and 406 and the element 304 are for example formed at an upper surface 306 of the charging station 104, this upper surface 306 being circular in the example of the figure 4 . The switch 106 is for example formed on an edge portion 308 of the charging station 104 outside the upper surface 306. This edge portion 308 is not covered by the rechargeable lamp module 102 when it is placed on the charging station 104, so that the switch 106 is visible and accessible while the rechargeable lamp module 102 is placed on the terminal.

The figure 5 is a view of the lower side of a base part 500 of the rechargeable lamp module 102, which is for example mounted on a lower side of the diffuser 108 of the rechargeable lamp module 102 and is therefore not visible in the views of the Figures 1 and 2 . This base part 500 comprises for example a support 502 on which feet 504 are for example mounted, the feet 504 being for example positioned so as to rest on the upper surface 306 of the charging station 104 when the rechargeable lamp module 102 is placed on it. Following the example of the figure 5 , there are four feet 504, but a different number of feet could be provided in alternative embodiments.

An element 505 formed on the support 502 is for example configured to engage with the element 304 of the charging station 104 when the rechargeable lamp module 102 is placed on it, to align the rechargeable lamp module 102 with the charging station 104, and in particular for aligning the electrical contacts 402, 404 and 406 of the charging station 104 with the corresponding electrical contacts of the rechargeable lamp module 102. In the example of the figure 5 , the element 505 corresponds to concentric annular ribs 506, 508 forming an annular groove 510 therebetween, in which the annular rib 304 of the charging station 104 is adapted to engage.

Following the example of the figure 5 , the electrical contacts of the rechargeable lamp module 102 include the electrical contacts 512, 514 and 516, for example formed in an area delimited by the annular rib 506. The electrical contact 512 corresponds for example to a central contact pad, the electrical contact 514 corresponds for example to a stud of annular contact encircling the pad 512 and the electrical contact 516 corresponds for example to an annular contact pad encircling the pads 512 and 514. It will be noted that the annular pads 514, 516 may be substantially annular or have other shapes, and the pad central 512 can be circular or have another shape.

An advantage of providing the contact pads 512, 514 and 516 which are substantially symmetrical in rotation is that an electrical contact between the contact pads 402, 404, 406 and the corresponding contact pads can be made for any angular orientation of the module of a rechargeable lamp 102 with respect to the charging station 104. The contact pin 402 of the charging station 104 is for example positioned so as to come into contact with the pad 512 of the rechargeable lamp module 102, the contact pin 404 of the charging station 104 is for example positioned so as to come into contact with the pad 514 of the rechargeable lamp module 102 and the contact pin 406 of the charging station 104 is for example positioned so as to come into contact with the pad 516 of the rechargeable lamp module 102.

The lower side of the base part 500 for example also comprises a molded part 518 in which is housed a switch of the rechargeable lamp module 102, as will be described in more detail below.

In what follows, it is assumed that the contact pin 402 of the charging station 104 supplies a supply voltage VIN to the contact pad 512 of the rechargeable lamp module 102, that the contact pin 404 of the charging station 104 supplies a ground voltage GND to the contact pad 514 of the rechargeable lamp module 102 and that the contact pin 406 of the charging station 104 provides a voltage signal to the contact pad 516 of the lamp module rechargeable 102. However, in alternative embodiments, it will appear to those skilled in the art that any of the pins and pads can be used to deliver any of the supply voltages or the voltage signal from the charging station 104 to the rechargeable lamp module 102.

The figure 6 schematically illustrates an example of circuits 600 implemented in the charging station 104 and in the rechargeable lamp module 102.

The charging station 104 comprises for example a circuit 602 comprising the switch 106, a first terminal of which is coupled to a GND ground rail of the charging station 104 and of which a second terminal is coupled to a node 604 connected to the electrical contact 406 of the charging station 104. A circuit block 606 couples for example the node 604 to a supply voltage rail VIN of the charging station 104 and the first terminal of the switch 106 to the ground rail GND of the charging station 104.

In the rechargeable lamp module 102, the contact pad 516 is coupled to a node 608 which is in turn coupled to a first terminal of a switch 610 of the lamp module 102, which is for example mounted in the molded part 518 of the figure 5 on the lower side of the rechargeable lamp module 102. The second terminal of the switch 610 is coupled to a GND ground rail of the lamp module 102. The switch 610 is for example a push button switch, such as a switch normally open. Alternatively, the switch 610 could be a normally closed push button switch. The switches 106 and 610 are advantageously of the same type. The node 608 is also for example coupled to the GND power rail via the parallel connection of the capacitors 612 and 614.

The rechargeable lamp module 102 comprises for example a blue LED 616 and the light sources 618 and 620, which are for example produced by white LEDs. LED 616 has its anode coupled to the GND ground rail and its cathode coupled to an input of a controller 622 via a resistor 624. The controller 622 is for example a microcontroller. The controller 622 comprises for example input / output pins numbered from 1 to 14 and the LED 616 is coupled to the input / output pin 2.

The LED 618 is for example controlled by a control signal supplied at the level of an output pin 6 of the controller 622, this pin being coupled to a node 626 which is in turn coupled to a control node of a transistor 628 The node 626 is also coupled to the GND ground rail via a resistor 630. The transistor 628 has one of its main current conductor nodes coupled to the GND ground rail and its other main conductive node coupled to the cathode of LED 618 via a resistor 632.

The LED 620 is for example controlled by a control signal supplied at the level of an output pin 5 of the controller 622, this pin being coupled to a node 636 which is in turn coupled to a control node of a transistor 638 The node 636 is also coupled to the ground rail GND via a resistor 640. The transistor 638 has one of its main current conductor nodes coupled to the ground rail GND and its other main conductor node coupled to the cathode of LED 620 via a resistor 642.

The anodes of the LEDs 618, 620 are for example coupled to a supply voltage rail VCC of the lamp module 102.

The supply voltage rail VCC is coupled to the input pin 1 of the controller 622 via a resistor 644, to the input pin 4 via a resistor 646 and to the pin input 3 via a resistor 648. The input pin 3 of the controller 622 is also coupled to node 608. The input pin 14 of the controller 622 is coupled to the GND ground rail, pins 1 and 14 being coupled to each other via a capacitor 650. The input pin 7 of the controller 622 is coupled to an intermediate node between the resistors 652 and 654, which are coupled in series between the voltage rails VIN and GND supply. The input pin 8 of the controller 622 is coupled to a charging socket 656 as will now be described in detail.

The charging socket 656 comprises for example an interface 658 receiving the supply voltages from the charging station 104, for example via the contact pads 512 and 514 (not shown in the figure 6 ). The VIN power rail is coupled via a diode 660 to a node 661, which in turn is coupled to an input of a circuit block 662 and via a diode 664 to the rail VCC supply voltage.

The circuit block 662 has 5 input / output pins numbered from 1 to 5. The node 661 is coupled to the input pin 4. A transistor 666 is coupled by its main current nodes between the voltage rail VCC power supply and a node 667, which is in turn coupled to input 3 of the circuit block 662. The node 667 is coupled to a positive terminal of a rechargeable battery 668 of the lamp module 102, a negative terminal of the 668 battery being coupled to the GND ground rail. The node 661 is also coupled to the GND ground rail via a capacitor 670. An input pin 5 of the circuit block 662 is for example coupled to the GND ground rail via a resistor 672.

A control node of the transistor 666 is for example coupled to the ground rail GND via a resistor 674, as well as to the node 661. A capacitor 676 is for example coupled between the supply voltage rail VIN and GND ground rail. An input pin 2 of the circuit block 662 is for example coupled to the GND ground rail and the input pin 1 of the circuit block 662 is for example coupled to the input pin 8 of the controller 622.

In operation, due to the parallel connection of switches 106 and 610, each of these switches can be used to switch the LEDs 618 and 620 on or off. In particular, for example the figure 6 , each time that the switch 106 or 610 is pressed for less than a threshold period, the controller 622 detects the transition or corresponding voltage pulse and causes the transition from the state of illumination of the LEDs 618 and 620 to a state following the sequence of states S1 to S2 to S3 to S4, then again to S1.

The state S1 corresponds for example to the off state of the two LEDs 618, 620. The state S2 corresponds for example to a low light state in which the LED 620 is on and the LED 618 is off. The state S3 corresponds for example to a state of medium brightness in which the LED 618 is on and the LED 620 is off. The state S4 corresponds for example to a state of high luminosity in which the two LEDs 618 and 620 are lit.

In addition, the controller 622 is for example configured so that when the lighting state is S2, S3 or S4 and that one or the other of the switches 106, 610 is pressed for an extended period, equal or greater than the threshold period, the lighting state returns to S1. Indeed, the prolonged pressure on the switch 106 or 610 causes for example a relatively long voltage pulse, which is a low voltage pulse in the example of the figure 6 in which node 608 is discharged by the normally open switch 106 or 610.

For example, the voltage signal at node 608 is delivered to pin 3 of the controller. Before the switch 106 or 610 is pressed, the voltage at the node 608 is for example close to VCC. When either switch is pressed, the voltage at node 608 discharges to ground, then resistors 644 and 648 limit the current drawn to node 608. In one embodiment, the controller 622 includes a counter which counts the duration of the voltage pulse at pin 3, in other words, the time during which the node 608 remains in the low state during the pressing of the switch 106 or 610.

In addition, the controller 622 is for example configured to control the LED 616 as a charge indicator. The LED is lit by the controller 622 during the charging of the battery 668 and until the battery is fully charged, from the voltage signal on the input pin 8 of the controller 622. However, whenever the one or both LEDs 618, 620 is on, LED 616 is for example off.

The charging socket 656 is for example configured so that when the battery 668 is fully charged to a given level and a supply voltage from the external power source is available, the lamp module 102 is directly powered by the external power source, avoiding the 668 battery.

An advantage of the embodiments described here is that the light sources of a rechargeable lamp module can be controlled by a switch when it is placed on a charging station without adding a switch on the rechargeable lamp module. This is achieved at relatively low cost by incorporating a switch into the charging station and adding a contact in the electrical interface between the charging station and the rechargeable lamp module to communicate a voltage signal produced by the switch to the module of rechargeable lamp. Advantageously, a switch is also present in the rechargeable lamp module and the switches of the charging station and of the rechargeable lamp module are coupled in parallel to provide a particularly simple and inexpensive embodiment.

Various embodiments and variants have been described. Those skilled in the art will understand that certain features of these embodiments can be combined and other variants will appear to those skilled in the art. In particular, an example of circuits implemented in the charging station and the lamp module has been described with reference to the figure 6 , but many variations are applicable. For example, there could be a different number of LEDs and a different type of switch could be used.

Furthermore, it will be apparent to those skilled in the art that, although circuits have been described comprising one or more positive supply rails and a ground rail, more generally, the ground rail can be considered as another supply voltage rail which can be at ground voltage or at another voltage lower than that of the other supply rails, including a negative voltage.

Claims (13)

Rechargeable lamp module comprising: - at least one light source (618, 620); - a controller (622); and - first, second and third electrical contacts (512, 514, 516) intended to be brought into electrical contact with corresponding contacts (402, 404, 406) of a charging station (104), the first electrical contact (512 ) being coupled to a first supply voltage rail (VIN) of the rechargeable lamp module, the second electrical contact (514) being coupled to a second supply voltage rail (GND) of the rechargeable lamp module and the third electrical contact (516) being coupled to an input of the controller (622), the controller (622) being configured to turn on and off said at least one light source (618, 620) from a voltage signal supplied by the the third electrical contact (516). The rechargeable lamp module according to claim 1, wherein the controller (622) is configured to detect a voltage transition or a voltage pulse supplied to the third electrical contact (516). The rechargeable lamp module of claim 2, wherein the controller (622) is configured to turn on said at least one light source (618, 620) in response to the detection of a first voltage transition or a first pulse. voltage delivered via the third electrical contact (516) and for switching off said at least one light source (618, 620) in response to the detection of a second voltage transition or a second voltage pulse delivered by l 'through the third electrical contact (516). Rechargeable lamp module according to claim 2, comprising first and second light sources (616, 618), in which the controller (622) is configured so as to: - switching on the first light source (616) in response to the detection of a first voltage transition or of a first voltage pulse delivered via the third electrical contact (516); and - switching on the second light source (618) in response to the detection of a second voltage transition or of a second voltage pulse supplied via the third electrical contact (516). The rechargeable lamp module of claim 4, wherein the controller (622) is further configured to turn off the first and second light sources (616, 618) in response to the detection of a third voltage transition or a third voltage pulse delivered via the third electrical contact (516), or in response to an extended voltage pulse of duration equal to or greater than a threshold time period. Rechargeable lamp module according to any of claims 1 to 5, further comprising a switch (610) one of whose terminals is coupled to said controller input (622) and the other terminal of which is coupled to the second rail supply voltage (GND), in which the switch (610) is for example a normally open or normally closed push button switch. Rechargeable lamp module according to any one of Claims 1 to 6, in which the first, second and third electrical contacts (512, 514, 516) are each formed by a corresponding pad from: - a central contact pad (512); - a first annular contact pad (514) encircling the central contact pad (512); and - A second annular contact pad (516) encircling the central contact pad and the first annular contact pad (512, 514). Rechargeable lamp module according to any one of claims 1 to 7, comprising a diffuser (108) on which are mounted one or more elements associated with a cartoon character. Charging station including: - a push button switch (106) for switching on and off at least one light source (618, 620, 622) of a rechargeable lamp module (102); and - first, second and third electrical contacts (402, 404, 406) intended to be brought into electrical contact with corresponding electrical contacts (512, 514, 516) of the rechargeable lamp module (102), the first electrical contact (402 ) being coupled to a first supply voltage rail (VIN) of the charging station, the second electrical contact (404) being coupled to a second supply voltage rail (GND) of the charging station and the third electrical contact (406) being coupled to a first terminal of the switch (106). A charging station according to claim 9, wherein the first switch terminal (106) is further coupled to the first supply voltage rail (VIN) and a second switch terminal (106) is coupled to the second supply voltage rail (GND) and in which the switch (106) is for example a normally open or normally closed push button switch. Charging station according to claim 9 or 10, wherein the first, second and third electrical contacts (402, 404, 406) are each formed by an elastic metal pin. Lamp comprising a rechargeable lamp module according to any one of claims 1 to 8 and a charging station according to any one of claims 9 to 11. Method for controlling at least one light source (618, 620) of a rechargeable lamp module (102) while the rechargeable lamp module is placed on a charging station (104), the rechargeable lamp module (102 ) comprising first, second and third electrical contacts (512, 514, 516) intended to be respectively brought into contact with the first, second and third electrical contacts (402, 404, 406) of the charging station (104), the first electrical contact (512) being coupled to a first supply voltage rail of the rechargeable lamp module (VIN), the second electrical contact (514) being coupled to a second supply voltage rail (GND) of the module rechargeable lamp and the third electrical contact (516) delivering a voltage signal to a controller (622) configured to switch on and off said at least one light source (618, 620) from the voltage signal, this method comprising: - the detection, by the controller (622) of the rechargeable lamp module (102), of a voltage transition or pulse on the third electrical contact (516); and - switching on or off said at least one light source (618, 620) in response to the detection of the voltage transition or pulse.

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