WO2022027542A1

WO2022027542A1 - Dimming device of led and luminaire device

Info

Publication number: WO2022027542A1
Application number: PCT/CN2020/107655
Authority: WO
Inventors: Tjaco Middel
Original assignee: Tridonic Gmbh & Co Kg
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-02-10
Also published as: GB202300461D0; GB2611925A

Abstract

A dimming device (100) includes: a connector (101) configured to connect a LED device (200); and a pulse width modulation (PWM) switch circuit (102) configured in the connector (101), wherein the PWM switch circuit (102) is configured to transmit a controlling signal to change a lumen output of the LED device (200) in response to a switching signal. Therefore, the lumen output of the LED device (200) is able to be set easily and flexibly with a simple structure.

Description

DIMMING DEVICE OF LED AND LUMINAIRE DEVICE

TECHNICAL FIELD

Embodiments of the present disclosure generally relate to the field of power control circuits, and more particularly, to a dimming device of light emitting diode (LED) and a luminaire device.

BACKGROUND

Nowadays, some dimming schemes of LED are used in LED lamps, for example, a lumen output of the LED need to be changed in order to satisfy some requirement in some scenarios. These schemes include a pulse width modulation (PWM) scheme, a digital addressable lighting interface (DALI) scheme, a near field communication (NFC) interface scheme, and so on.

This section introduces aspects that may facilitate a better understanding of the disclosure. Accordingly, the statements of this section are to be read in this light and are not to be understood as admissions about what is in the prior art or what is not in the prior art.

SUMMARY

The inventor found that in some existing schemes, the PWM circuit is configured in a LED driver, therefore these schemes are expensive and inflexible; while in some schemes, the lumen output is fixed for a certain type of LED device (such as a LED tape or a LED strip) , these schemes are also inflexible.

In order to solve at least part of the above problems, methods, apparatus, devices are provided in the present disclosure. Features and advantages of embodiments of the present disclosure will also be understood from the following description of specific embodiments when read in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of embodiments of the present disclosure.

In general, embodiments of the present disclosure provide a dimming device of LED and a luminaire device. It is expected to set a lumen output easily and flexibly with a simple structure.

In a first aspect, a dimming device of LED is provided. The dimming device of LED includes: a connector configured to connect a LED device; and a pulse width modulation (PWM) switch circuit configured in the connector, wherein the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of the LED device in response to a switching signal.

In some embodiments, the connector includes a first terminal and a second terminal, the first terminal is connected with the LED device and the second terminal is connected with a LED driver, or, the first terminal is connected with the LED device and the second terminal is connected with another LED device.

In some embodiments, the LED device includes a LED tape which configured with a plurality of LEDs, or the LED device includes a LED strip which configured with a plurality of LEDs, or the LED device is a LED lamp.

In some embodiments, the switching signal is generated by at least one of a near field communication (NFC) switch, a dual inline-pin (DIP) switch, a Bluetooth low energy (BLE) switch, a resistor switch or a rotary switch.

In some embodiments, the PWM switch circuit is configured to change a duty cycle of a pulse width modulation signal to generate the controlling signal according to the switching signal.

In a second aspect, a luminaire device is provided. The luminaire device includes: a light emitting diode (LED) driver, a LED device configured with at least one LED; and a connector configured to connect the LED driver and the LED device; wherein a pulse width modulation (PWM) switch circuit is configured in the connector, and the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of the LED device in response to a switching signal.

According to various embodiments of the present disclosure, a PWM switch circuit is configured in a connector, the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of a LED device in response to a switching signal. Therefore, the lumen output of the LED device is able to be set easily and flexibly with a simple structure.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and benefits of various embodiments of the disclosure will become more fully apparent, by way of example, from the following detailed description with reference to the accompanying drawings, in which like reference numerals or letters are used to designate like or equivalent elements. The drawings are illustrated for facilitating better understanding of the embodiments of the disclosure and not necessarily drawn to scale, in which:

Fig. 1 is a diagram which shows a dimming device of LED in accordance with an embodiment of the present disclosure;

Fig. 2 is a diagram which shows an example the connector in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION

The present disclosure will now be described with reference to several example embodiments. It should be understood that these embodiments are discussed only for the purpose of enabling those skilled persons in the art to better understand and thus implement the present disclosure, rather than suggesting any limitations on the scope of the present disclosure.

It should be understood that when an element is referred to as being “connected” or “coupled” or “contacted” to another element, it may be directly connected or coupled or contacted to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” or “directly coupled” or “directly contacted” to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between” , “adjacent” versus “directly adjacent” , etc. ) .

As used herein, the terms “first” and “second” refer to different elements. The singular forms “a” and “an” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises, ” “comprising, ” “has, ” “having, ” “includes” and/or “including” as used herein, specify the presence of stated features, elements, and/or components and the like, but do not preclude the presence or addition of one or more other features, elements, components and/or combinations thereof.

The term “based on” is to be read as “based at least in part on” . The term “cover” is to be read as “at least in part cover” . The term “one embodiment” and “an embodiment” are to be read as “at least one embodiment” . The term “another embodiment” is to be read as “at least one other embodiment” . Other definitions, explicit and implicit, may be included below.

In this disclosure, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

A first aspect of embodiments

A dimming device of LED is provided in the embodiments.

Fig. 1 is a diagram which shows a dimming device of LED in accordance with an embodiment of the present disclosure.

As shown in Fig. 1, a dimming device 100 of light emitting diode (LED) includes: a connector 101 configured to connect a LED device 200; and a pulse width modulation (PWM) switch circuit 102 configured in the connector 101, the PWM switch circuit 102 is configured to transmit a controlling signal to change a lumen output of the LED device 200 in response to a switching signal.

It should be appreciated that some components or elements are illustrated only as examples in Fig. 1. However, it is not limited thereto, for example, connections or positions of the components or elements may be adjusted, and/or, some components or elements may be omitted.

In some embodiments, the LED device 200 includes a LED tape which configured with a plurality of LEDs, or the LED device 200 includes a LED strip which configured with a plurality of LEDs, or the LED device 200 is a LED lamp. It is not limited thereto; the LED device may be other LED products.

In some embodiments, as shown in Fig. 1, the connector 101 includes a first terminal 1011 and a second terminal 1012, the first terminal 1011 is connected with the LED device 200 and the second terminal 1012 is connected with a LED driver 300.

For example, the LED driver 300 is a standard fixed output constant voltage driver. Therefore, the driver 300 is low cost while the dimming function is able to be realized by the connector 101 with the PWM switch circuit 102, such that lumen setting is easy and flexible.

In some embodiments, the first terminal 1011 is connected with the LED device 200 and the second terminal 1012 is connected with another LED device. That is to say, the connector 101 is an interconnector between LED devices.

For example, there are two LED tapes which connected by the connector 101 with the PWM switch circuit 102, both of the two LED tapes are driven by a standard fixed output constant voltage driver. Therefore, the driver 300 is low cost while the dimming function can be realized by the connector 101 with the PWM switch circuit 102, such that lumen setting is easy and flexible.

Fig. 2 is a diagram which shows an example of the connector in accordance with an embodiment of the present disclosure. It should be appreciated that some components or elements are illustrated only as examples in Fig. 2. However, it is not limited thereto, for example, connections or positions of the components or elements may be adjusted, and/or, some components or elements may be omitted.

As shown in Fig. 2, a connector 201 is configured to connect a LED driver 202 and a LED device 203 which configured with at least one LED. A pulse width modulation (PWM) switch circuit 204 (includes a switch S1) is configured in the connector 201, the PWM switch circuit 204 is configured to transmit a controlling signal P2 to change a lumen output of the LED device 203 in response to a switching signal P1.

In some embodiments, the switching signal P1 is generated by at least one of a near field communication (NFC) switch, a dual inline-pin (DIP) switch, a Bluetooth low energy (BLE) switch, a resistor switch or a rotary switch. However, it is not limited thereto, it may be generated by other ways.

For example, the PWM switch circuit 204 includes an NFC interface, which is capable of receiving a switching signal from a terminal device handled by a user. The switch signal is generated by triggering an NFC function.

For another example, the PWM switch circuit 204 includes a DIP interface, which is capable of receiving a switching signal from a user. The switch signal is generated by an operation of the user on the DIP switch.

For another example, the PWM switch circuit 204 includes a rotary interface, which is capable of receiving a switching signal from a user. The switch signal is generated by an operation of the user on a rotary switch (such as a rotary knob) .

In some embodiments, the PWM switch circuit is configured to change a duty cycle of a pulse width modulation signal to generate the controlling signal according to the switching signal. The lumen output of LED is able to be changed according to the duty cycle of the PWM signal.

For example, the dimming level may include level 0 and level 1. The PWM switch circuit may change a duty ratio of the PWM signal to 90%when the switching signal is corresponding to level 0; The PWM switch circuit may change a duty ratio of the PWM signal to 50%when the switching signal is corresponding to level 1.

For another example, the dimming level may include levels 0, 1, 2. The PWM switch circuit may change a duty ratio of the PWM signal to 95%when the switching signal is corresponding to level 0; The PWM switch circuit may change a duty ratio of the PWM signal to 75%when the switching signal is corresponding to level 1; The PWM switch circuit may change a duty ratio of the PWM signal to 55%when the switching signal is corresponding to level 2.

It should be appreciated that the above contents are illustrated only as examples. However, it is not limited thereto, for example, other information and other levels (such as more than three levels) may be used on demand in some scenarios.

Therefore, flexible choice in lumen output can be realized in small steps, it is easy to set the lumen output as a desired level. Furthermore, independent lumen setting and/or in-field adjustment can be implemented.

It is to be understood that, the above examples or embodiments are discussed for illustration, rather than limitation. Those skilled in the art would appreciate that there may be many other embodiments or examples within the scope of the present disclosure. Furthermore, some contents of PWM dimming, LED driving may be referred to relevant art, and these are omitted in this disclosure.

It can be seen from the above embodiments, a PWM switch circuit is configured in a connector, the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of a LED device in response to a switching signal. Therefore, the lumen output of the LED device is able to be set easily and flexibly with a simple structure.

A second aspect of embodiments

A luminaire device is provided in the embodiments. The corresponding device 100 is illustrated in the first aspect of embodiments, and the same contents as those in the first aspect of embodiments are omitted.

The luminaire device includes:

a light emitting diode (LED) driver,

a LED device configured with at least one LED; and

a connector configured to connect the LED driver and the LED device; wherein a pulse width modulation (PWM) switch circuit is configured in the connector, and the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of the LED device in response to a switching signal.

It is to be understood that, the above examples or embodiments are discussed for illustration, rather than limitation. Those skilled in the art would appreciate that there may be many other embodiments or examples within the scope of the present disclosure.

Further, it is expected that one of ordinary skill, notwithstanding possibly significant effort and many design choices motivated by, for example, available time, current technology, and economic considerations, when guided by the concepts and principles disclosed herein will be readily capable of generating such software instructions and programs and integrated circuits (ICs) with minimal experimentation.

Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device.

While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.

Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.

Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.

Although the present disclosure has been described in language specific to structural features and/or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

A dimming device of light emitting diode (LED) , comprising:

a connector configured to connect a LED device; and

a pulse width modulation (PWM) switch circuit configured in the connector, wherein the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of the LED device in response to a switching signal.
The device according to claim 1, wherein the connector comprises a first terminal and a second terminal,

the first terminal is connected with the LED device and the second terminal is connected with a LED driver, or, the first terminal is connected with the LED device and the second terminal is connected with another LED device.
The device according to claim 1, wherein the LED device comprises a LED tape which configured with a plurality of LEDs, or the LED device comprises a LED strip which configured with a plurality of LEDs, or the LED device is a LED lamp.
The device according to any one of claims 1-3, wherein the switching signal is generated by at least one of a near field communication (NFC) switch, a dual inline-pin (DIP) switch, a Bluetooth low energy (BLE) switch, a resistor switch or a rotary switch.
The device according to any one of claims 1-3, wherein the PWM switch circuit is configured to change a duty cycle of a pulse width modulation signal to generate the controlling signal according to the switching signal.
A luminaire device, comprising:

a light emitting diode (LED) driver,

a LED device configured with at least one LED; and

a connector configured to connect the LED driver and the LED device; wherein a pulse width modulation (PWM) switch circuit is configured in the connector, and the PWM switch circuit is configured to transmit a controlling signal to change a lumen output of the LED device in response to a switching signal.