A light adjusting and color adjusting device and a lamp

Abstract

This utility model discloses a dimming and color-tuning device and a lamp. The dimming and color-tuning device includes: a fixed component; a rotating component adapted to receive a single rotation operation and rotate relative to the fixed component; a first electrical contact mechanism including a first contact element and a second contact element; and a second electrical contact mechanism including a third contact element and a fourth contact element. Each corresponding contact radius is adapted to change its relative angular position by rotating the rotating component relative to the fixed component to switch between multiple preset electrical contact states. A single rotation operation of the rotating component is adapted to drive the first and second electrical contact mechanisms to switch their respective multiple electrical contact states, where each of the multiple electrical contact states corresponds to multiple discrete values ​​of dimming and color-tuning signals. This dimming and color-tuning device can reduce the complexity of brightness and color temperature adjustment of lamps and improve the convenience and smoothness of adjustment.

Description

Technical Field

[0001] This invention relates to the field of lighting control technology, specifically to a dimming and color-adjusting device and a lighting fixture. Background Technology

[0002] Light-emitting diodes (LEDs), as a highly efficient, energy-saving, and long-life light source, are widely used in general lighting, commercial lighting, and special lighting. With the continuous development of LED lighting technology, users' demands for lighting quality and personalized experiences are increasing, and simply meeting basic lighting needs is far from sufficient to meet the diverse requirements of the market. Among these, adjusting the output light parameters of LED luminaires, especially the output power (which affects brightness) and output color temperature (which affects the lighting atmosphere), has become an important function of modern LED lighting products.

[0003] In existing technologies, various methods are typically used to achieve power and color temperature adjustment in LED lighting fixtures. For example, some products use independent physical buttons, knobs, or toggle switches on the fixture. Users can select the brightness level or color temperature mode by operating these different control elements. However, this approach is relatively cumbersome when users need to adjust these two parameters simultaneously or frequently, potentially requiring switching between multiple control points, which reduces the convenience and intuitiveness of adjustment. Especially in applications requiring rapid response or fine-tuning, this control method fails to provide a smooth user experience and increases operational complexity. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a dimming and color-adjusting device and a lamp, which can reduce the complexity of adjusting the brightness and color temperature of the lamp and improve the convenience and smoothness of adjustment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Technical Solution 1: A dimming and color-adjusting device for adjusting the color temperature and power level of a light source, comprising: a fixed component; a rotating component adapted to receive a single rotation operation and rotate relative to the fixed component; a first electrical contact mechanism including a first contact element and a second contact element respectively disposed on the fixed component and the rotating component, the two being adapted to change their relative angular positions through the rotation of the rotating component relative to the fixed component to switch between multiple preset electrical contact states; and a second electrical contact mechanism including a third contact element and a fourth contact element respectively disposed on the fixed component and the rotating component, the two being adapted to change their relative angular positions through the rotation of the rotating component relative to the fixed component to switch between multiple preset electrical contact states; wherein, the same single rotation operation of the rotating component is adapted to drive the first electrical contact mechanism and the second electrical contact mechanism to switch their respective multiple electrical contact states, and the multiple electrical contact states in the first electrical contact mechanism correspond to multiple discrete values ​​of a first control signal for adjusting the color temperature of the light source, and the multiple electrical contact states in the second electrical contact mechanism correspond to multiple discrete values ​​of a second control signal for adjusting the power level of the light source.

[0007] Technical Solution 2 based on Technical Solution 1: The fixing component is a fixed circuit board, and the rotating component is a rotating circuit board; the first contact element includes at least a first probe group disposed on the fixed circuit board, the second contact element includes a first conductive track disposed on the rotating circuit board; the third contact element includes at least a second probe group disposed on the fixed circuit board, and the fourth contact element includes a second conductive track disposed on the rotating circuit board.

[0008] Technical Solution 3 based on Technical Solution 2: The first conductive trajectory includes at least two concentric arc-shaped conductive regions. The concentric arc-shaped conductive regions are provided with multiple preset, electrically distinguishable contact areas. The first probe group selectively makes electrical contact with different contact areas during the rotation of the rotating circuit board to switch the multiple electrical contact states of the first electrical contact mechanism. Diodes are provided in the connection paths between the contact areas or with the control terminals of different color temperature light source strings.

[0009] Technical Solution 4 based on Technical Solution 3: The second conductive trajectory includes at least one conductive segment and at least one non-conductive segment or another conductive segment with electrical characteristics different from the conductive segment. The second probe group selectively makes electrical contact with the conductive segment or the non-conductive segment / another conductive segment during the rotation of the rotating circuit board to switch the multiple electrical contact states of the second electrical contact mechanism.

[0010] Technical Solution 5 based on Technical Solution 4: The conductive section is a section of arc-shaped conductive material with a predetermined angle range. One of the at least two probes in the second probe group is adapted to be connected to the output positive terminal of the driving circuit, and the other probe is adapted to be connected to a power adjustment signal input terminal, so as to simultaneously make electrical contact with the conductive section and form a conducting state among the multiple electrical contact states.

[0011] Technical solution six based on technical solution five: The probes in the first probe group and the second probe group are all spring pins.

[0012] In addition, the present invention also provides a seventh technical solution: a lamp comprising at least one light source and a driving circuit, the driving circuit being adapted to drive the light source, and further comprising a dimming and color-adjusting device as described in any one of technical solutions one to six; the dimming and color-adjusting device outputs a first control signal and a second control signal to the driving circuit by receiving a single rotation operation to adjust the color temperature and power level of the light source respectively.

[0013] Technical solution eight based on technical solution seven: The rotating component of the dimming and color-tuning device is partially exposed outside the housing of the lamp, or is linked with an operable rotating component on the housing of the lamp.

[0014] Technical solution nine based on technical solution seven: The driving circuit includes a DC-DC conversion unit, and the second control signal output by the dimming and color-tuning device is used to control the output power of the DC-DC conversion unit.

[0015] Technical solution ten based on technical solution seven: the light source includes at least two types of LED beads with different color temperatures, and the driving circuit is configured to selectively turn on the at least two types of LED beads with different color temperatures or a combination thereof according to the first control signal output by the dimming and color-tuning device.

[0016] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0017] Technical solution one provides a dimming and color-adjusting device, which, through a synergistic structural design, enables users to control the color temperature and power level of the light source independently with a single, continuous rotation operation.

[0018] The fixed component in the device provides a reference for subsequent relative movement. When the user applies a single rotational operation to the rotating component, the rotating component will undergo angular displacement relative to the fixed component. This angular displacement is the initial physical change driving the entire adjustment process. Furthermore, the device contains a first electrical contact mechanism and a second electrical contact mechanism, each composed of contact elements located on the fixed component and the rotating component, respectively. The specific positions and arrangements of these two sets of contact elements on the fixed and rotating components are pre-configured. Therefore, when the rotating component rotates, the angular position of the contact elements it carries relative to the contact elements on the fixed component changes accordingly. This change directly causes the contact elements within the first and second electrical contact mechanisms to switch to different preset electrical contact states. Because the contact elements of the first and second electrical contact mechanisms can differ in structural layout or in the areas that respond to changes in rotational angle, the rotation of the same rotating component allows the two mechanisms to switch their electrical contact states independently or in a preset logical sequence. For example, the first electrical contact mechanism may switch its state within a certain angular range of rotation, while the second electrical contact mechanism switches its frequency response within another angular range or in different states. Each specific electrical contact state formed by the first electrical contact mechanism directly and uniquely corresponds to a discrete value of a first control signal used to adjust the color temperature of the light source. Similarly, each specific electrical contact state formed by the second electrical contact mechanism also directly and uniquely corresponds to a discrete value of a second control signal used to adjust the power level of the light source. Therefore, through a single, uninterrupted rotation operation, the user can generate two independent control signal sequences. This structure, which decomposes a single mechanical action into two independent electrical control outputs, allows color temperature and power adjustment tasks that previously required operating two or more independent control components to be achieved now only through the rotation of a single component. This significantly simplifies the user's operation, improves the convenience and intuitiveness of the adjustment process, and reduces potential confusion or errors caused by operating multiple control points.

[0019] In technical solution two, the fixed component is specifically defined as a fixed circuit board, and the rotating component is specifically defined as a rotating circuit board. Furthermore, the first, second, third, and fourth contact elements are further defined as first and second probe groups disposed on the fixed circuit board, and first and second conductive tracks disposed on the rotating circuit board, respectively. This specific structural configuration provides a reliable physical basis for the manufacture and assembly of the color tuning device, and by utilizing the sliding or rolling contact between the probe groups and the conductive tracks to achieve electrical contact and conduction, the stability of the electrical contact state switching can be further improved.

[0020] In technical solution three, the first conductive trajectory is defined as comprising at least two concentric arc-shaped conductive regions, and these conductive regions are provided with multiple preset, electrically distinguishable contact areas. This configuration enables precise and reliable switching between multiple preset electrical contact states of the first electrical contact mechanism, thereby generating discrete control signals for color temperature adjustment. The concentric arc-shaped conductive regions and their multiple different contact areas provide a series of clear and independent electrical connection paths for the sliding contact of the first probe group as the circuit board rotates. When the first probe group selectively contacts these different contact areas as it rotates, different electrical connection states are formed. The introduction of diodes, utilizing their unidirectional conduction characteristics, ensures that current flows accurately to the predetermined color temperature channel and effectively prevents current crosstalk between different color temperature control paths, guaranteeing the accuracy of color temperature adjustment and the purity of each color temperature mode output.

[0021] In technical solution four, the second conductive trajectory is defined as including at least one conductive segment and at least one non-conductive segment or another conductive segment with different electrical characteristics from the conductive segment. This configuration effectively enables switching between multiple preset electrical contact states of the second electrical contact mechanism, thereby generating discrete control signals for adjusting the power level. When the second probe group rotates with the rotating circuit board and selectively contacts the conductive segment or non-conductive segment (or another conductive segment with different electrical characteristics), different electrical connection states are formed. For example, contacting the conductive segment creates a conducting state, contacting the non-conductive segment creates a disconnected state, or contacting conductive segments with different parameters creates different circuit connections. This structure provides a clear physical basis for achieving at least two different power level outputs, such as high power and low power, or power on and off, enabling the device to output control signals for switching the power level of the light source.

[0022] In technical solution five, the conductive section is defined as a segment of arc-shaped conductive material with a predetermined angle range. Simultaneously, of at least two probes in the second probe group, one is adapted to connect to the positive output terminal of the drive circuit, and the other is adapted to connect to the power regulation signal input terminal. These two probes form a conductive state by simultaneously making electrical contact with the arc-shaped conductive section. By precisely positioning the arc-shaped conductive material within a predetermined angle range on the rotation path of the rotating assembly, when the rotating assembly rotates to this range, the two probes connected in a specific manner will simultaneously contact the conductive material, thereby forming a complete electrical circuit. The formation of this circuit allows a definite electrical signal, such as a high level or a low level, to be generated at the power regulation signal input terminal; this signal directly corresponds to a specific power level, such as a high power setting. This structure makes the power level switching mechanism more concrete, reliable, and easy to implement in engineering.

[0023] In technical solution six, both the probes in the first and second probe groups are defined as spring-loaded pins. The spring-loaded pin contains an internal spring structure, which provides the probe head with a certain amount of extension and contraction allowance and continuous contact pressure. Therefore, it can automatically compensate to a certain extent for assembly tolerances that may exist between the fixed and rotating components, minor unevenness of the contact surfaces, and minor vibrations that may occur during long-term use or rotation of the device. This ensures that the probe and the conductive track maintain stable and good electrical contact at all times. Furthermore, the spring-loaded pin can be made of wear-resistant materials, and its structure helps to provide a certain degree of self-cleaning during sliding contact, better adapting to wear caused by long-term sliding friction, thereby extending the effective service life of the device and ensuring the stability and accuracy of control signal transmission.

[0024] Technical solution seven provides a luminaire that integrates a dimming and color-adjusting device as defined in any one of the aforementioned technical solutions one through six. This dimming and color-adjusting device, upon receiving a single rotation operation from the user, outputs a first control signal and a second control signal to the luminaire's drive circuit for adjusting the light source's color temperature and power level, respectively. By directly integrating the aforementioned dimming and color-adjusting device into the luminaire's structure, the luminaire itself possesses the ability to simultaneously or stepwise control its light source's color temperature and power level through a single, intuitive rotation operation. Users can conveniently personalize the lighting environment parameters directly on the luminaire itself without needing an additional remote control or operating multiple scattered buttons and knobs, thereby greatly improving the luminaire's usability, human-computer interaction friendliness, and overall user experience.

[0025] In technical solution eight, the rotating component is partially exposed outside the lamp housing, or is linked with an operable rotating part on the lamp housing, ensuring that users can conveniently and directly operate the dimming and color-adjusting device integrated on the lamp.

[0026] In technical solution nine, the driving circuit includes a DC-DC converter unit, and the second control signal output by the dimming and color-tuning device, namely the power control signal, is used to directly control the output power of the DC-DC converter unit. The DC-DC converter unit can accurately and efficiently convert the input voltage and control the power output to the light source according to the control signal. By directly using the second control signal generated by the dimming and color-tuning device as the control input to the DC-DC converter unit, the power level setting selected by the user through rotation can be effectively converted into precise adjustment of the actual driving power of the light source, contributing to stable and reliable brightness changes.

[0027] In technical solution ten, the light source of the luminaire includes at least two types of LEDs with different color temperatures, and the driving circuit is configured to selectively activate these LEDs or combinations thereof based on a first control signal output by the dimming and color-tuning device, i.e., a color temperature control signal. For example, by activating only cool color temperature LEDs, or only warm color temperature LEDs, or by activating both simultaneously according to a specific logic and ratio to form an intermediate or mixed color temperature, the luminaire can produce a variety of different output light colors. This allows the color temperature mode selected by the user through rotating the dimming and color-tuning device to be accurately reflected in the actual color of the light emitted by the luminaire, thereby meeting the user's diverse lighting environment needs for different lighting atmospheres and application scenarios. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the first conductive trajectory for color temperature adjustment on the rotating component in the dimming and color-adjusting device provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the second conductive trajectory on the rotating component for power level adjustment in the dimming and color-tuning device provided in an embodiment of the present invention;

[0031] Figure 3 The circuit diagram of the dimming and color-adjusting device provided in the embodiment of the present invention is shown.

[0032] Explanation of key figure labels:

[0033] Fixing component 10; Fixing circuit board 11;

[0034] Rotating assembly 20; Rotating circuit board 21;

[0035] First contact element 31; first probe group 311; second contact element 32; first conductive trace 321; contact area 322;

[0036] Third contact element 41; second probe group 411; fourth contact element 42; second conductive trace 421; conductive section 422; non-conductive section 423. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0039] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0040] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0041] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0042] Terminology Definition

[0043] Dimming and color-adjusting device: refers to an integrated control device used to adjust the power level of the light output from a light source (thus affecting brightness) and color temperature (affecting the ambient light atmosphere). In this application, it specifically refers to a device that achieves simultaneous or discrete adjustment of these two parameters through a single rotation operation.

[0044] Light source: refers to an object or device capable of emitting light. In this application, it mainly refers to an illumination component composed of one or more light-emitting diode (LED) beads or LED strings, the color temperature and power level of the light emitted by which can be adjusted by the device of the present invention.

[0045] Color temperature: A physical quantity that measures the color characteristics of light, usually measured in Kelvin. In this application, it refers to a specific state or adjustable range of light emitted by a light source that can be adjusted by a dimming and color-tuning device, between warm tones (e.g., lower Kelvin values) and cool tones (e.g., higher Kelvin values).

[0046] Power rating: refers to the preset level of electrical energy consumed by a light source per unit time or its output luminous flux (brightness). In this application, it refers to several different, discrete output power or brightness levels of the light source that can be selected by a dimming and color-tuning device.

[0047] Fixed component 10: In the dimming and color-tuning device, this refers to a component whose structural position remains relatively stationary during operation. This component provides a reference and support for the rotational movement of the rotating component 20. In one specific embodiment of this application, the fixed component 10 is manifested as a fixed circuit board 11.

[0048] Rotating component 20: In the dimming and color-adjusting device, this refers to a component that can receive the user's rotation operation and change its angular position relative to the fixed component 10. The rotation of this component drives the state switching of the internal electrical contact mechanism. In a specific embodiment of this application, the rotating component 20 is manifested as a rotating circuit board 21.

[0049] Single rotation operation: refers to a user performing a continuous or segmented rotation action on the rotating component 20. This single operation can simultaneously or according to predetermined logic drive the first and second electrical contact mechanisms inside the device to switch their respective electrical contact states.

[0050] Electrical contact mechanism: refers to an electromechanical structure composed of contact elements respectively mounted on the fixed component 10 and the rotating component 20. This mechanism changes the relative angular position between the contact elements by rotating the rotating component 20 relative to the fixed component 10, thereby switching between multiple preset electrical contact states and generating control signals.

[0051] First electrical contact mechanism: Specifically refers to the mechanism inside the dimming and color-tuning device, which is specifically designed to respond to the rotation operation of the rotating component 20 by switching its multiple preset electrical contact states to generate a first control signal for adjusting the color temperature of the light source.

[0052] Second electrical contact mechanism: Specifically refers to the mechanism inside the dimming and color-tuning device, which is also used to generate a second control signal for adjusting the power level of the light source by switching multiple preset electrical contact states in response to the above-mentioned single rotation operation of the rotating component 20.

[0053] Contact elements: These are key components constituting an electrical contact mechanism, designed to establish or disconnect an electrical connection at specific relative positions. In this application, these elements are specifically manifested as a probe group provided on the fixed assembly 10 and a conductive track provided on the rotating assembly 20.

[0054] First contact element 31: refers to a contact element disposed on the fixed assembly 10 and forming part of the first electrical contact mechanism. In the embodiments of this application, it is specifically the first probe group 311.

[0055] The second contact element 32 refers to a contact element disposed on the rotating assembly 20 and constituting another part of the first electrical contact mechanism. In the embodiments of this application, it is specifically the first conductive track 321.

[0056] The third contact element 41 refers to a contact element disposed on the fixed assembly 10 and forming part of the second electrical contact mechanism. In the embodiments of this application, it is specifically the second probe group 411.

[0057] The fourth contact element 42 refers to a contact element disposed on the rotating assembly 20 and constituting another part of the second electrical contact mechanism. In the embodiments of this application, it is specifically the second conductive track 421.

[0058] Relative angular position: refers to the rotation angle or orientation of the rotating component 20 relative to the fixed component 10. Changes in this relative angular position directly alter the contact relationship between the contact elements on the fixed component 10 and the contact elements on the rotating component 20, thereby switching the electrical contact state.

[0059] Electrical contact state: refers to several preset, electrically distinguishable connection modes formed between corresponding contact elements in an electrical contact mechanism due to changes in their relative angular positions. These modes include, but are not limited to, being on, off, or connected to different circuit nodes.

[0060] Control signal: refers to the electrical signal output by the electrical contact mechanism under different electrical contact states. This signal is used to instruct the drive circuit to adjust the light parameters (such as color temperature and power level) of the light source accordingly.

[0061] First control signal: Specifically refers to a series of discrete value signals that uniquely correspond to each specific electrical contact state of the first electrical contact mechanism and are used to adjust the color temperature of the light source.

[0062] Second control signal: Specifically refers to a series of discrete value signals that uniquely correspond to each specific electrical contact state of the second electrical contact mechanism and are used to adjust the power level of the light source.

[0063] Discrete values: refer to a finite number of non-continuous specific numerical values ​​or logical states that a control signal can present. These discrete values ​​correspond to several preset levels or modes of light source parameters (color temperature, power level).

[0064] Fixed circuit board 11: refers to a printed circuit board that carries and connects electronic components, and in this application, it is a specific implementation of the fixed component 10. It is usually provided with conductive paths and pads or interfaces for mounting components such as probe groups.

[0065] Rotating circuit board 21: refers to a plate-shaped component that can rotate around a specific axis or center point, and in this application, it is a specific implementation of the rotating assembly 20. It typically has conductive traces on it for cooperation with the probe group on the fixed circuit board 11.

[0066] Probe assembly: refers to a group of contact elements disposed on the fixed circuit board 11, consisting of at least one probe (e.g., a spring pin). When the rotating circuit board 21 rotates, the probe tips of the probe assembly make selective sliding electrical contact with the conductive traces on the rotating circuit board 21.

[0067] First probe group 311: Specifically refers to a probe group used to cooperate with the first conductive trace 321 to switch the electrical contact state of the first electrical contact mechanism, thereby generating a first control signal.

[0068] Second probe group 411: Specifically refers to a probe group used to cooperate with the second conductive trace 421 to switch the electrical contact state of the second electrical contact mechanism, thereby generating a second control signal.

[0069] Conductive trace: refers to a specific path, area, or pattern formed by conductive material (such as copper foil) on or inside the rotating circuit board 21. When the probe group on the fixed circuit board 11 slides along this trace or contacts different areas, different electrical connection states can be formed.

[0070] First conductive track 321: Specifically refers to the portion of the conductive track used in conjunction with the first probe group 311 to achieve the color temperature adjustment function.

[0071] Second conductive trace 421: Specifically refers to the portion of the conductive trace used in conjunction with the second probe group 411 to achieve power level adjustment function.

[0072] Concentric arc-shaped conductive area: refers to the conductive portion on the rotating circuit board 21 that has multiple arcs arranged around the same center but with different radii. This is a specific structural form of the first conductive trajectory 321 in this application, used to realize multi-level color temperature selection.

[0073] Contact area 322: refers to a pre-defined, electrically distinguishable specific location or section on the conductive path. When the probes of the probe group contact these different contact areas 322, different electrical contact states are formed or switched.

[0074] A diode is a semiconductor electronic component with unidirectional conduction characteristics. In the color temperature adjustment circuit of this application, the diode is used to ensure that the current flows in a predetermined direction to the control terminal of the light source string of a specific color temperature, and effectively prevents reverse crosstalk between different color temperature control paths, thereby ensuring the accuracy of color temperature adjustment and the purity of the output of each color temperature mode.

[0075] Conductive section 422: refers to a predetermined portion or section on the second conductive trajectory 421 that has good conductivity. When the probes of the second probe group 411 simultaneously contact this section, a conductive state is formed.

[0076] Non-conductive sections 423 and 422: These refer to predetermined portions or sections on the second conductive trace 421 whose electrical characteristics are significantly different from those of the conductive section 422 (typically insulation or high resistance). When a probe of the second probe group 411 contacts this section, it forms an open state or a different electrical state than when in contact with the conductive section 422.

[0077] Spring-loaded probe: refers to a precision probe connector with an integrated spring structure. Its probe head has axial flexibility under external force, providing continuous and stable contact pressure. In this application, using a spring-loaded probe helps compensate for assembly tolerances, maintain good electrical contact, and improve the durability and reliability of the device.

[0078] Driving circuit: refers to a set of electronic circuits used to provide the electrical energy required for the normal operation of a light source (especially a light-emitting diode light source) and to adjust the working state of the light source (such as output power, lighting a specific combination of LED beads, etc.) according to the external input control signals.

[0079] DC-DC converter unit: This refers to a core functional unit within the drive circuit, whose function is to convert the input DC voltage into a DC voltage or current output. In this application, the output power of this unit is controlled by the second control signal output by the dimming and color-tuning device, thereby achieving precise adjustment of the power level of the light source.

[0080] LED bead: refers to a single packaged light-emitting diode unit, which is the basic light-emitting element that constitutes a light-emitting diode light source. In this application, the light source may include LED beads with at least two different color temperatures.

[0081] Light-emitting diode (LED): A solid-state semiconductor device that can directly convert electrical energy into light energy. Due to its advantages such as high efficiency, energy saving, and long lifespan, it is widely used in modern lighting.

[0082] Pulse Width Modulation (PWM): A technique that uses the digital output of a microprocessor to control analog circuits, modulating the average power or equivalent voltage of a signal by changing the duty cycle of the output square wave. In LED lighting control, PWM is often used to achieve precise brightness adjustment, for example, by controlling the PWM control chip U1 mentioned in this application.

[0083] Optocoupler: An electronic component that transmits electrical signals from one circuit to another while providing electrical isolation between the two circuits, using light as a medium for signal transmission. In the power switching circuit of this application, such as... Figure 3 The optocoupler U3 shown is used to transmit power regulation signals and to achieve isolation between the high-voltage side and the low-voltage control side.

[0084] Example 1

[0085] This invention relates to a dimming and color-adjusting device, which can be applied to lamps and used to adjust the color temperature and power level of the light source in the lamps. In this embodiment, the light source can be an LED chip or an LED string. The dimming and color-adjusting device includes: a fixed component 10; a rotating component 20 adapted to receive a single rotation operation and rotate relative to the fixed component 10; a first electrical contact mechanism including a first contact element 31 and a second contact element 32 respectively disposed on the fixed component 10 and the rotating component 20, both adapted to change their relative angular positions through the rotation of the rotating component 20 relative to the fixed component 10 to switch multiple preset electrical contact states; and a second electrical contact mechanism including a third contact element 41 and a fourth contact element 42 respectively disposed on the fixed component 10 and the rotating component 20, both adapted to change their relative angular positions through the rotation of the rotating component 20 relative to the fixed component 10 to switch multiple preset electrical contact states; wherein, the same single rotation operation of the rotating component 20 is adapted to drive the first electrical contact mechanism and the second electrical contact mechanism to switch their respective multiple electrical contact states, and the multiple electrical contact states in the first electrical contact mechanism correspond to multiple discrete values ​​of a first control signal for adjusting the color temperature of the light source, and the multiple electrical contact states in the second electrical contact mechanism correspond to multiple discrete values ​​of a second control signal for adjusting the power level of the light source.

[0086] In this embodiment, refer to Figure 1 , Figure 2 and Figure 3The fixing component 10 is a fixed circuit board 11, and the rotating component 20 is a rotating circuit board 21; the first contact element 31 includes at least a first probe group 311 disposed on the fixed circuit board 11, the second contact element 32 includes a first conductive track 321 disposed on the rotating circuit board 21; the third contact element 41 includes at least a second probe group 411 disposed on the fixed circuit board 11, and the fourth contact element 42 includes a second conductive track 421 disposed on the rotating circuit board 21.

[0087] Specifically, the fixed circuit board 11 can be made of a conventional printed circuit board material such as FR-4, and has conductive paths and contact elements for establishing electrical connections. The rotating circuit board 21 can be made of an insulating substrate, such as the insulating layer of a PCB board or a plastic injection molded part, and also has conductive traces. The fixed circuit board 11 and the rotating circuit board 21 are assembled by a central pivot (not shown) or other suitable mechanical connection, so that the rotating circuit board 21 can rotate relative to the fixed circuit board 11 about the central pivot. The first contact element 31 is specifically at least a first probe group 311 disposed on the fixed circuit board 11, and the second contact element 32 is specifically a first conductive trace 321 disposed on the rotating circuit board 21, such as... Figure 1 and Figure 2 As shown. The third contact element 41 is specifically a second probe group 411 disposed on the fixed circuit board 11, and the fourth contact element 42 is specifically a second conductive track 421 disposed on the rotating circuit board 21, as shown. Figure 1 and Figure 3 As shown.

[0088] The fixed component 10 is specifically defined as a fixed circuit board 11, and the rotating component 20 is specifically defined as a rotating circuit board 21. Furthermore, the first, second, third, and fourth contact elements 42 are further defined as first and second probe groups 411 disposed on the fixed circuit board 11, and first and second conductive tracks 421 disposed on the rotating circuit board 21, respectively. This specific structural configuration provides a reliable physical basis for the manufacture and assembly of the color tuning device, and by utilizing the sliding or rolling contact between the probe groups and the conductive tracks to achieve electrical contact and conduction, the stability of the switching of electrical contact states can be further improved.

[0089] Furthermore, referring to Figure 1 and Figure 2The first conductive trajectory 321 includes at least two concentric arc-shaped conductive areas. The concentric arc-shaped conductive areas are provided with a plurality of preset, electrically distinguishable contact areas 322. The first probe group 311 selectively makes electrical contact with different contact areas 322 during the rotation of the rotating circuit board 21 to switch the plurality of electrical contact states of the first electrical contact mechanism. Diodes are provided in the connection paths between the contact areas 322 or with the control terminals of different color temperature light source strings.

[0090] Furthermore, referring to Figure 1 and Figure 3 The second conductive trajectory 421 includes at least one conductive segment 422 and at least one non-conductive segment 423 / 422 or another conductive segment 422 with different electrical characteristics from the conductive segment 422. During the rotation of the rotating circuit board 21, the second probe group 411 selectively contacts the conductive segment 422 or the non-conductive segment 423 / 422 / another conductive segment 422 to switch the plurality of electrical contact states of the second electrical contact mechanism. The conductive segment 422 is a section of arc-shaped conductive material with a predetermined angle range. One probe of the at least two probes in the second probe group 411 is adapted to connect to the positive output terminal of the drive circuit, and the other probe is adapted to connect to a power regulation signal input terminal, so as to simultaneously make electrical contact with the conductive segment 422 and form a conducting state among the plurality of electrical contact states.

[0091] Specifically, refer to Figure 2 The first conductive trace 321 is used to transmit electrical signals through electrical contacts on the plate surface to adjust the color temperature of the light source. This first conductive trace 321 can be designed to include two or more concentric arc-shaped conductive areas, for example... Figure 2The diagram schematically illustrates the outer and inner conductive areas. These concentric arc-shaped conductive areas are composed of multiple discontinuous, electrically independent contact areas 322, thus forming an unlimited number of electrical channels. For example, these contact areas 322 can be labeled as "color A," "color B," "color C," etc., representing different color temperature control states. The tips of the two first probes of the first probe group 311 on the fixed circuit board 11 correspond to and maintain elastic contact with these conductive sectors of the inner and outer rings, respectively. When the user rotates the circuit board 21, the two first probes slide simultaneously on their respective corresponding arc-shaped conductive areas. Since each contact area 322 is electrically distinguishable, when the two first probes slide to different combinations of contact areas 322, different circuit paths are connected, thus forming one of the multiple preset electrical contact states of the first electrical contact mechanism. For example, both first probes are connected to the positive output V+ of the drive circuit. When both first probes simultaneously contact the "color A" region, the V+ signal connects through these two probes and the conductive portion of the "color A" region to the control point associated with the cool color temperature LED string (e.g., the connection point labeled color1+). When rotating to the "color C" region, the V+ signal connects to the control point associated with the warm color temperature LED string (e.g., the connection point labeled color2+). When rotating to the "color B" region, the conductive design of this region, through internal wiring or external jumpers, and in conjunction with diodes, allows the V+ signal to be simultaneously or logically distributed to the control points of both the cool and warm color temperature LED strings to achieve a mixed color temperature. The diodes (e.g.,...) Figure 3 The schematic diagram of D5 and D6 in the color temperature switching circuit (or diodes such as those on the bottom layer of the rotating circuit board 21) serves to ensure unidirectional current flow, prevent reverse crosstalk between different color temperature control channels, and guarantee the accuracy of color temperature switching. Each such selective electrical contact state corresponds to a discrete value of a first control signal, which is then interpreted by the drive circuit to drive the LED string of the corresponding color temperature to emit light. It should be emphasized that the type and specific application of the electrical signal transmitted through this electrical contact method are not limited to the color temperature control signal described in this embodiment. It can be any electrical signal that can carry information through circuit switching or level changes to achieve diverse control functions.

[0092] Specifically, refer to Figure 3 The second conductive track 421 is used to adjust the power level of the light source. This second conductive track 421 includes at least one conductive segment 422 on the circumferential path of the rotating circuit board 21, for example... Figure 3The diagram illustrates a semi-circular (180-degree angle range) exposed copper foil track and at least one non-conductive section 423 (i.e., the remaining insulating substrate portion on the circumferential path) with electrical characteristics different from the conductive section 422. The tips of the two second probes of the second probe group 411 on the fixed circuit board 11 maintain elastic contact with the second conductive track 421. One second probe is connected to the positive output V+ of the drive circuit, while the other second probe is connected to the power regulation signal input terminal SW. When the user rotates the circuit board 21, if the tips of both second probes simultaneously slide onto the semi-circular conductive section 422, the V+ signal is transmitted to the SW terminal through the first second probe, the conductive section 422, and the second second probe, causing the SW terminal to present a high level. This constitutes a "conduction state" among multiple preset electrical contact states of the second electrical contact mechanism, corresponding to, for example, a second control signal of a higher power level. When the rotating circuit board 21 is rotated such that the tip of at least one of the two second probes slides onto the non-conductive section 423422, the two second probes cannot conduct through the conductive path, and the SW terminal is either at a low level or floating. This constitutes the "disconnected state" of the second electrical contact mechanism, corresponding to, for example, a second control signal of a lower power level. In this way, the rotation operation can switch between at least two different power levels.

[0093] In this embodiment, the probes in the first probe group 311 and the second probe group 411 are all spring-loaded pins. Specifically, to ensure a continuous, stable electrical connection with appropriate contact pressure between the probes and the conductive tracks during the rotation of the rotating circuit board 21, this embodiment preferably uses spring-loaded pins (POGO pins) as the probes constituting the first probe group 311 and the second probe group 411. The spring-loaded pin contains a precision spring, giving its probe head axial flexibility. This characteristic effectively compensates for minor gap changes or surface unevenness that may occur between the fixed circuit board 11 and the rotating circuit board 21 due to manufacturing, assembly tolerances, or long-term wear, while also absorbing minor vibrations during rotation. The needle tip and tube of the spring-loaded pin are typically made of highly conductive and wear-resistant materials, such as beryllium copper or phosphor bronze, and are often gold-plated to improve conductivity, oxidation resistance, and wear resistance. The continuous contact pressure of the spring-loaded pin also helps to scrape away any slight oxide layer or dirt that may exist on the surface of the conductive tracks, providing a certain degree of self-cleaning. Therefore, using spring-loaded pins can significantly improve the reliability of electrical contact and the overall service life of the device.

[0094] In addition, refer to Figure 3The diagram illustrates the circuit schematic of the dimming and color-tuning device working in conjunction with the driving circuit in this embodiment. Specifically, the AC input first passes through an EMI filter and rectification filter circuit, which consists of components such as fuse F1, varistor RV1, common-mode inductor LF1, X capacitor CX1, rectifier bridge BD1, and filter capacitors C1 and C2. This part of the circuit converts the input AC mains power into a low-pulsation DC high voltage. This DC high voltage is then supplied to a DC-DC converter circuit, i.e., the "boost-buck circuit" indicated in the diagram. This boost-buck circuit consists of core components such as the main switch Q1 (e.g., MOSFET), energy storage inductor L1 (or transformer primary winding T1a), freewheeling diode D4 (or synchronous rectifier), output filter capacitor (not shown separately in the diagram, but usually included in the "output constant current circuit" or directly connected before the LED load), and PWM control chip U1 (e.g., labeled "boost-buck control circuit"). The control chip U1 drives Q1 to operate in a high-frequency switching mode, regulating the storage and release of energy in inductor L1 to achieve voltage boosting or bucking of the output voltage to meet the needs of the LED load. The "output constant current circuit" is a key component ensuring the LED load operates under a stable current. This is typically achieved by the control chip U1 monitoring the actual current flowing through the LED load (via the current sampling resistors RS1, RS2, and RS3 in the "output current feedback detection circuit") and comparing it with an internal reference current, then adjusting the duty cycle of Q1 through negative feedback. The first control signal (color temperature control signal) and the second control signal (power control signal) generated by the dimming and color-tuning device of this invention are respectively connected to the "color temperature switching circuit" and "power switching circuit" of the drive circuit. The "color temperature switching circuit" controls different LED strings (e.g., ...) according to the first control signal. Figure 3 The diagram illustrates the on / off state or current distribution of LEDs of different colors connected in parallel or series. For example, different discrete values ​​of the first control signal can drive different switches (such as small relays, transistors, or enable terminals of multi-channel constant current drive chips) to selectively illuminate cool color temperature LEDs, warm color temperature LEDs, or combinations thereof. Figure 3The diagram schematically illustrates the connection of different LED strings switched via a selector switch RO (this RO is different from the RO board on the rotating circuit board 21, and is only for illustration), and may be isolated or controlled by diodes D5 and D6 for specific logic. The "power switching circuit" receives the second control signal (i.e., the signal at the SW terminal). When the signal at the SW terminal changes (e.g., from low level to high level), this change, through components such as resistor R13, optocoupler U3 (which serves for isolation and signal transmission), resistors R11 and R12, and transistor Q2, ultimately changes the equivalent resistance of the current sampling resistor network or directly affects the voltage of the feedback pin (e.g., the FB or CS pin) of the control chip U1. For example, when SW is high, U3 conducts, which may cause Q2 to conduct, thereby connecting resistor RS3 in parallel with the original sampling resistors RS1 and RS2, reducing the total sampling resistance. For some control chips, a decrease in sampling resistance means a decrease in feedback voltage, and the chip may mistakenly interpret this as insufficient output current, thus increasing the PWM duty cycle to increase output current and power. Conversely, when SW is low, Q2 is cut off, the sampling resistor returns to its original value, and a lower power is output. In this way, the second control signal adjusts the output power level of the drive circuit. The figure also illustrates a "dimming current detection circuit," which is typically used in conjunction with an external analog dimmer (such as a SCR dimmer) to achieve smoother brightness adjustment, but it is not a signal directly generated by the rotary adjustment mechanism of this invention.

[0095] The dimming and color-adjusting device provided in this embodiment, through its structural collaborative design, enables users to control the color temperature and power level of the light source independently with a single, continuous rotational operation. The fixed component 10 in the device provides a reference for subsequent relative movement. When the user applies a single rotational operation to the rotating component 20, the rotating component 20 will undergo angular displacement relative to the fixed component 10. This angular displacement is the initial physical change driving the entire adjustment process. Furthermore, the device internally includes a first electrical contact mechanism and a second electrical contact mechanism, both composed of contact elements located on the fixed component 10 and the rotating component 20, respectively. The specific positions and arrangements of these two sets of contact elements on the fixed component 10 and the rotating component 20 are pre-configured. Therefore, when the rotating component 20 rotates, the angular position of the contact elements it carries relative to the contact elements on the fixed component 10 changes accordingly. This change directly causes the contact elements within the first and second electrical contact mechanisms to switch to different preset multiple electrical contact states. Because the contact elements of the first and second electrical contact mechanisms can differ in structural layout or in their response areas to changes in rotation angle, the rotation of the same rotating component 20 allows these two mechanisms to switch their electrical contact states independently or in a preset logical sequence. For example, the first electrical contact mechanism may switch its state within a certain rotation angle range, while the second electrical contact mechanism may switch its frequency response within another angle range or with a different state. Each specific electrical contact state formed by the first electrical contact mechanism directly and uniquely corresponds to a discrete value of a first control signal used to adjust the color temperature of the light source. Similarly, each specific electrical contact state formed by the second electrical contact mechanism directly and uniquely corresponds to a discrete value of a second control signal used to adjust the power level of the light source. Therefore, through a single, uninterrupted rotation operation, the user can generate two independent control signal sequences. This structure, which decomposes a single mechanical action into two independent electrical control outputs, allows color temperature and power adjustment tasks that previously required operating two or more independent control components to be completed to now be achieved with the rotation of only one component. This significantly simplifies the user's operation steps, improves the convenience and intuitiveness of the adjustment process, and reduces the confusion or errors that may occur due to operating multiple control points.

[0096] Example 2

[0097] This embodiment provides a lamp, which includes at least one light source and a driving circuit. The driving circuit is adapted to drive the light source and also includes the dimming and color-adjusting device described in Embodiment 1. The dimming and color-adjusting device outputs a first control signal and a second control signal to the driving circuit by receiving a single rotation operation to adjust the color temperature and power level of the light source, respectively.

[0098] Specifically, the dimming and color-adjusting device described in Embodiment 1 is integrated as a component within the lamp. The fixed component 10 (fixed circuit board 11) and the rotating component 20 (rotating circuit board 21) of the dimming and color-adjusting device are mounted in appropriate positions within the lamp. The LED light-emitting module serves as the light source, and its required driving current and control signals are provided by the driving circuit inside the lamp. The first control signal for adjusting the color temperature and the second control signal for adjusting the power level generated by the dimming and color-adjusting device are both connected to the corresponding input terminals of the driving circuit. When the user rotates the rotating component 20 of the dimming and color-adjusting device on the lamp, the device outputs corresponding control signals to the driving circuit. The driving circuit then changes the way it drives the LED light-emitting module based on these signals, thereby adjusting the color temperature and power level (i.e., brightness) of the light emitted by the lamp.

[0099] The luminaire integrates a dimming and color-adjusting device as defined in Embodiment 1. This device receives a single rotation operation from the user and outputs a first control signal and a second control signal to the luminaire's drive circuit to adjust the light source's color temperature and power level, respectively. By directly integrating the aforementioned dimming and color-adjusting device into the luminaire's structure, the luminaire itself possesses the ability to simultaneously or sequentially control its light source's color temperature and power level through a single, intuitive rotation operation. Users can conveniently personalize the lighting environment parameters directly on the luminaire itself without needing an additional remote control or operating multiple separate buttons and knobs, thereby greatly improving the luminaire's usability, human-computer interaction friendliness, and overall user experience.

[0100] In this design, the rotating component 20 of the dimming and color-changing device is partially exposed outside the lamp housing or linked to an operable rotating part on the lamp housing. Specifically, to facilitate user adjustment, the rotating component 20 (i.e., the rotating circuit board 21) can be designed to be directly exposed as part of the lamp housing; for example, a rotatable disc can be provided on the end cap or side of the lamp, which is either the rotating component 20 itself or directly connected to it. Alternatively, the rotating component 20 can be located inside the lamp housing but connected to a user-operable knob, dial, or slider outside the lamp housing via a mechanical linkage, gear, or other linkage mechanism. The user indirectly drives the internal rotating component 20 to rotate by operating this external component. Regardless of the method used, the goal is to provide the user with an easily accessible and operable physical interface to adjust the lamp's light parameters.

[0101] The rotating component 20 is partially exposed outside the lamp housing or linked to an operable rotating part on the lamp housing, ensuring that the user can conveniently and directly operate the dimming and color-tuning device integrated on the lamp.

[0102] In this embodiment, the driving circuit includes a DC-DC converter unit, and the second control signal output by the dimming and color-tuning device is used to control the output power of the DC-DC converter unit. Specifically, the core part of the driving circuit inside the lamp is a DC-DC converter unit, for example... Figure 3 The diagram shows a step-up / step-down circuit and its control chip U1. This DC-DC converter unit is responsible for converting the input electrical energy into a stable current and voltage suitable for driving the LED light-emitting module. The second control signal (power control signal, such as the level signal at the SW terminal) generated by the dimming and color-tuning device is input to the drive circuit and acts on the control loop of the DC-DC converter unit. As mentioned earlier, this can be achieved by changing the equivalent value of the current sampling resistor or by directly adjusting a control pin of the control chip U1 (such as the PWM duty cycle control pin or the reference voltage pin). The DC-DC converter unit adjusts its output power accordingly based on the change in the second control signal, thereby directly changing the current or voltage driving the LED light-emitting module, ultimately achieving adjustment of the lamp's output power level (i.e., brightness).

[0103] Furthermore, the light source includes at least two types of LED beads with different color temperatures, and the driving circuit is configured to selectively turn on the at least two types of LED beads with different color temperatures, or a combination thereof, according to the first control signal output by the dimming and color-tuning device. Specifically, the light source of the lamp can be an LED light-emitting module. The LED light-emitting module of the lamp consists of at least two types of LED beads or LED strings with different color temperatures, for example, including a set of cool color temperature (e.g., 6000K) LED beads and a set of warm color temperature (e.g., 3000K) LED beads. The driving circuit has corresponding control paths (e.g., Figure 3 The color temperature switching circuit in the lamp can selectively supply power to LEDs of different color temperatures based on different discrete values ​​of the first control signal (color temperature control signal) received from the dimming and color-tuning device. For example, when the first control signal corresponds to the "cool color" mode, the drive circuit only lights up the cool color temperature LEDs; when it corresponds to the "warm color" mode, it only lights up the warm color temperature LEDs; and when it corresponds to the "mixed color" mode, it can simultaneously light up LEDs of both cool and warm color temperatures, and may achieve a richer range of intermediate color temperatures by adjusting their respective current ratios (if the drive circuit supports this). In this way, the lamp can present a variety of different output color temperatures according to the user's rotation operation.

[0104] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A dimming and color-adjusting device for adjusting the color temperature and power level of a light source, characterized in that it comprises: A fixed component (10); A rotating component (20) adapted to receive a single rotational operation and rotate relative to the fixed component (10); The first electrical contact mechanism includes a first contact element (31) and a second contact element (32) respectively disposed on the fixed component (10) and the rotating component (20), which are adapted to change their relative angular positions by rotating the rotating component (20) relative to the fixed component (10) to switch multiple preset electrical contact states; and The second electrical contact mechanism includes a third contact element (41) and a fourth contact element (42) respectively disposed on the fixed component (10) and the rotating component (20), which are adapted to change their relative angular positions by rotating the rotating component (20) relative to the fixed component (10) to switch multiple preset electrical contact states. The same single rotation operation of the rotating component (20) is adapted to drive the first electrical contact mechanism and the second electrical contact mechanism to switch their respective multiple electrical contact states, and the multiple electrical contact states in the first electrical contact mechanism correspond to multiple discrete values ​​of the first control signal for adjusting the color temperature of the light source, and the multiple electrical contact states in the second electrical contact mechanism correspond to multiple discrete values ​​of the second control signal for adjusting the power level of the light source.

2. The dimming and color-adjusting device as described in claim 1, characterized in that, The fixing component (10) is a fixed circuit board (11), and the rotating component (20) is a rotating circuit board (21); the first contact element (31) includes at least a first probe group (311) disposed on the fixed circuit board (11), the second contact element (32) includes a first conductive track (321) disposed on the rotating circuit board (21); the third contact element (41) includes at least a second probe group (411) disposed on the fixed circuit board (11), and the fourth contact element (42) includes a second conductive track (421) disposed on the rotating circuit board (21).

3. The dimming and color-adjusting device as described in claim 2, characterized in that, The first conductive trajectory (321) includes at least two concentric arc-shaped conductive areas. The concentric arc-shaped conductive areas are provided with a plurality of preset, electrically distinguishable contact areas (322). The first probe group (311) selectively makes electrical contact with different contact areas (322) during the rotation of the rotating circuit board (21) to switch the plurality of electrical contact states of the first electrical contact mechanism. Diodes are provided in the connection paths between the contact areas (322) or with the control terminals of different color temperature light source strings.

4. The dimming and color-adjusting device as described in claim 3, characterized in that, The second conductive trace (421) includes at least one conductive segment (422) and at least one non-conductive segment (423) (422) or another conductive segment (422) with different electrical characteristics from the conductive segment (422). The second probe group (411) selectively makes electrical contact with the conductive segment (422) or the non-conductive segment (423) (422) / another conductive segment (422) during the rotation of the rotating circuit board (21) to switch the plurality of electrical contact states of the second electrical contact mechanism.

5. The dimming and color-adjusting device as described in claim 4, characterized in that, The conductive section (422) is a section of arc-shaped conductive material with a predetermined angle range. One of the at least two probes of the second probe group (411) is adapted to be connected to the output positive terminal of the driving circuit, and the other probe is adapted to be connected to a power regulation signal input terminal, so as to simultaneously make electrical contact with the conductive section (422) and form a conducting state among the plurality of electrical contact states.

6. The dimming and color-adjusting device as described in claim 5, characterized in that, The probes in the first probe group (311) and the second probe group (411) are all spring pins.

7. A luminaire comprising at least one light source and a driving circuit, said driving circuit being adapted to drive the light source, characterized in that, It also includes the dimming and color-adjusting apparatus as described in any one of claims 1-6; The dimming and color-adjusting device outputs a first control signal and a second control signal to the drive circuit by receiving a single rotation operation to adjust the color temperature and power level of the light source, respectively.

8. A lamp as described in claim 7, characterized in that, The rotating component (20) of the dimming and color-tuning device is partially exposed outside the housing of the lamp or is linked to an operable rotating component on the housing of the lamp.

9. A lamp as described in claim 7, characterized in that, The driving circuit includes a DC-DC converter unit, and the second control signal output by the dimming and color-tuning device is used to control the output power of the DC-DC converter unit.

10. A lamp as described in claim 7, characterized in that, The light source includes at least two types of LEDs with different color temperatures, and the driving circuit is configured to selectively turn on the at least two types of LEDs with different color temperatures or a combination thereof according to the first control signal output by the dimming and color-tuning device.

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