WO2024051744A1

WO2024051744A1 - Brightness adjustment apparatus and lamp

Info

Publication number: WO2024051744A1
Application number: PCT/CN2023/117273
Authority: WO
Inventors: 伍传基
Original assignee: 深圳市影之器科技有限公司
Priority date: 2022-09-08
Filing date: 2023-09-06
Publication date: 2024-03-14
Also published as: CN218514555U

Abstract

A brightness adjustment apparatus (400) and a lamp, relating to the technical field of lighting devices. The brightness adjustment apparatus (400) comprises a base (410), a rotating ring (420), and a circuit board (430); an accommodating cavity (411) is formed inside the base (410), a magnetic induction assembly is provided in the base (410), and the magnetic induction assembly comprises at least two magnetic sensors (440) staggered in the radial direction of the accommodating cavity (411); the rotating ring (420) is sleeved on the outer peripheral surface of the base (410) and is rotatably matched with the base (410), a preset number of first magnet pieces (450) are distributed on the inner wall surface of the rotating ring (420) in a circumferential direction, and the first magnet pieces (450) are used for being in induction fit with the magnetic sensors (440); the circuit board (430) is provided in the accommodating cavity (411), a control unit electrically connected to the magnetic sensors (440) is integrated on the circuit board (430), and the control unit is configured to acquire change information of magnetic flux in the magnetic sensors (440) and adjust the brightness of a lamp according to the change information of the magnetic flux. The brightness adjustment apparatus (400) realizes the flexible control of adjustment of the brightness of lamps, and is simple to operate, thereby improving the user experience.

Description

Brightness adjustment devices and lamps

Cross-references to related applications

This application claims the rights and interests of Chinese patent application 202222399389.4 submitted on September 8, 2022. The content of this application is incorporated herein by reference.

Technical field

The present application relates to the technical field of lighting equipment, and specifically, to a brightness adjustment device and a lamp.

Background technique

As a common tool in people's daily lives, lamps are usually used in scenes such as study, office, makeup or photography. However, different usage scenarios have different requirements for light brightness. In the prior art, brightness adjustment of lamps usually involves switching between different brightness levels set at the factory through a key switch or a touch switch to control the brightness of the lamp. However, this control method is easy to be accidentally touched during the use of the lamp, especially the touch switch, which can only upshift. Therefore, when the user accidentally skips the gear with appropriate brightness, he needs to upshift to the highest gear before returning to the lowest gear, and then upshift from the lowest gear step by step. The operation is cumbersome and the user experience is poor.

Technical solutions

The purpose of this application is to provide a brightness adjustment device and a lamp to solve the deficiencies in the prior art.

In order to achieve the above purpose, in the first aspect, the present application provides a brightness adjustment device for use in lamps. The brightness adjustment device includes:

A base with an accommodation cavity inside, and a magnetic induction assembly inside the base. The magnetic induction assembly includes at least two magnetic sensors arranged staggered along the radial direction of the accommodation cavity;

A rotating ring is sleeved on the outer peripheral surface of the base and rotates with the base. A preset number of first magnet parts are distributed along the circumferential direction on the inner wall surface of the rotating ring. The first magnet parts for inductive cooperation with the magnetic sensor; and

A circuit board is provided on the base and located in the accommodation cavity. A control unit electrically connected to the magnetic sensor is integrated on the circuit board. The control unit is configured to acquire at least two of the magnetic sensors. and adjust the brightness of the lamp according to the change information of the magnetic flux.

As a further improvement of the above technical solution:

In conjunction with the first aspect, in a possible implementation, the magnetic sensor is a Hall sensor.

In conjunction with the first aspect, in a possible implementation, a preset number of first magnet members are evenly distributed along the circumferential direction on the inner wall surface of the rotating ring.

In conjunction with the first aspect, in a possible implementation, the first magnet component is bonded or embedded on the inner wall surface of the rotating ring.

In conjunction with the first aspect, in a possible implementation, a plurality of second magnets are evenly arranged on the inner wall surface of the base along the circumferential direction, and the second magnets are used to magnetically interact with the first magnets. Matching, and the polarity of the opposite side of the second magnet piece and the first magnet piece is opposite.

In conjunction with the first aspect, in a possible implementation, the inner wall surface of the rotating ring is provided with a first limiting shoulder, and the outer peripheral surface of the base is provided with a second limiting shoulder. A limiting shoulder abuts the second limiting shoulder to limit the axial movement of the rotating ring along the base.

In conjunction with the first aspect, in a possible implementation, the outer peripheral surface of the rotating ring is provided with anti-skid patterns.

In conjunction with the first aspect, in a possible implementation, the outer peripheral surface of the rotating ring is provided with an anti-slip rubber pad.

In conjunction with the first aspect, in a possible implementation, the base is provided with a power interface and display screen.

In order to achieve the above object, in a second aspect, the present application also provides a lamp, which includes a light-emitting device and a brightness adjusting device provided according to the first aspect. The brightness adjusting device is used to adjust the brightness of the light emitted by the light-emitting device. .

Compared with the existing technology, the beneficial effects of this application are:

The present application provides a brightness adjustment device and a lamp, wherein the brightness adjustment device includes a base, a rotating ring and a circuit board. A magnetic sensor assembly is provided in the base, and the magnetic sensor assembly includes at least one element staggered along the radial direction of the accommodation cavity. Two magnetic sensors, a rotating ring is sleeved on the outer peripheral surface of the base and rotates with the base. A preset number of first magnet pieces are distributed along the circumferential direction on the inner wall surface of the rotating ring. The first magnet part is used for inductive cooperation with the magnetic sensor. Therefore, the brightness adjustment device disclosed in the present application can change the magnetic flux passing through each magnetic sensor by rotating the rotating ring. Since at least two of the magnetic sensors are arranged in a radial offset along the accommodation cavity, When the rotating ring is rotated forward and reverse, the magnetic flux passing through each magnetic sensor will be different. The control unit is configured to obtain the change information of the magnetic flux in at least two magnetic sensors, and adjust the brightness of the lamp according to the change information of the magnetic flux. Thus, by associating the forward and reverse rotation of the rotating ring of the control unit with the brightening and dimming of the lamp, flexible control of the brightness of the lamp is achieved, which is simple to operate and greatly improves the user experience.

Other features and advantages of the present application will be described in detail in the following detailed description.

Description of the drawings

The accompanying drawings are used to provide a further understanding of the present application, and form a part of the specification, and are used to explain the present application together with the following detailed description. It should be understood that the following drawings only show certain embodiments of the present application, and therefore should not be seen as limiting the scope and are generally For ordinary technicians, other related drawings can also be obtained based on these drawings without exerting creative work. In the attached picture:

Figure 1 shows a schematic three-dimensional structural diagram of a lamp equipped with a lampshade provided by an embodiment of the present application;

Figure 2 shows an exploded schematic diagram of a lamp provided by an embodiment of the present application;

Figure 3 shows an exploded schematic diagram of the heat dissipation device in the lamp shown in Figure 2;

Figure 4 shows a front view of the lamp in Figure 1 with the lampshade hidden;

Figure 5 shows a cross-sectional view along the A-A direction in Figure 4;

Figure 6 shows a partially enlarged schematic view of B in Figure 5;

Figure 7 shows an exploded schematic diagram of the brightness adjustment device in the lamp shown in Figure 2;

FIG. 8 shows a schematic structural diagram of a brightness adjustment device provided by an embodiment of the present application.

Explanation of reference symbols:
100. Light-emitting device; 110. Lamp holder; 120. Light-emitting component; 130. Lampshade; 200. Heat dissipation device; 210. Heat dissipation seat; 211. Air inlet; 212. Air outlet; 220. Heat dissipation medium; 230. First connection seat ; 240. Fan assembly; 300. Power supply device; 310. Installation shell; 311. Battery compartment; 320. Power supply battery; 330. Second connection base; 400. Brightness adjustment device; 410. Base; 411. Accommodation cavity; 412. Base body; 4120. Second limiting shoulder; 4121. Second receiving groove; 413. Mounting plate; 414. Fixed ring; 420. Rotating ring; 421. First limiting shoulder; 422. Anti-slip pattern; 430. Circuit board; 440. Magnetic sensor; 450. First magnet component; 460. Second magnet component; 470. Power interface; 480. Display screen.

Detailed ways

The specific implementation manners of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementations described here are only used to illustrate and explain the embodiments of the present application, and It is not used to limit the embodiments of this application.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other.

In the embodiments of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back" ", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis", The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply the device or element to which it refers. Must have a specific orientation, be constructed and operate in a specific orientation and therefore should not be construed as a limitation on this application.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In this application, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The present application will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

Please refer to Figure 1 and Figure 2. This embodiment provides a lamp. The lamp includes a light emitting device 100, a heat dissipation device 200, a power supply device 300 and a brightness adjustment device 400. The light emitting device 100, the heat dissipation device 200, the power supply device 300 and the brightness adjustment device 400 are sequentially arranged in a linear direction and are detachable from each other. connect.

The light-emitting device 100 is used to emit light; in this embodiment, it is defined that the side of the light-emitting device 100 that emits light is the light-emitting side, and the side facing away from the light-emitting side is the backlight side. The heat dissipation device 200 is detachably disposed on the backlight side of the light-emitting device 100 and is used to dissipate heat for the light-emitting device 100 . The power supply device 300 is detachably connected to the heat dissipation device 200 for providing electrical energy. The brightness adjustment device 400 is detachably connected to the power supply device 300 and is used to control the brightness of the light emitting device 100 .

Specifically, the above-mentioned light-emitting device 100 includes a lamp holder 110 and a light-emitting component 120. The light-emitting component 120 is disposed in the lamp holder 110. The light-emitting component 120 is used to emit light. The light-emitting component 120 is electrically connected to the power supply device 300 and the brightness adjustment device 400.

Furthermore, the lamp holder 110 is also provided with a lampshade 130 , wherein the lampshade 130 is detachably connected to the lampholder 110 and is located on the light-emitting side of the light-emitting device 100 .

Optionally, the lampshade 130 and the lamp holder 110 are snap fit, thread fit, interference fit or screw fit.

Please refer to FIG. 2 and FIG. 3 . The heat dissipation device 200 includes a heat dissipation base 210 , a heat dissipation medium 220 , a first connection base 230 and a fan assembly 240 . The heat dissipation seat 210 has a hollow structure, and an outer peripheral surface of the heat dissipation seat 210 is provided with external threads at one end connected to the lamp holder 110 . The heat dissipation base 210 is provided with an air inlet 211 and an air outlet 212. The air inlet 211 and the air outlet 212 allow air to enter and exit the heat dissipation base 210 to facilitate heat dissipation.

The heat dissipation medium 220 , the fan assembly 240 and the first connection base 230 are sequentially arranged along the axis direction of the heat dissipation base 210 . The heat dissipation medium 220 is disposed in the heat dissipation seat 210 and contacts the light-emitting component 120 of the light-emitting device 100 to facilitate heat exchange between the heat dissipation medium 220 and the light-emitting device 100 and to fix the light-emitting component 120 at the same time. The first connection base 230 is disposed on a side of the heat dissipation base 210 away from the heat dissipation medium 220 . The first connection base 230 is used to detachably connect the power supply device 300 . The fan assembly 240 is disposed on the first connection base 230 and is located between the heat dissipation medium 220 and the first connection base 230. The fan assembly 240 is used to form an airflow flowing from the air inlet 211 to the air outlet 212 in the heat dissipation base 210 to bring The heat on the heat dissipation medium 220 is removed to achieve the purpose of heat dissipation.

Please refer to Figure 2, Figure 4 and Figure 5. The above-mentioned power supply device 300 includes a mounting housing 310, a power supply Battery 320 and second connection base 330 . Among them, the installation shell 310 has a long cylindrical structure, and one end of the installation shell 310 is detachably connected to the heat dissipation device 200. Specifically, the installation shell 310 is sleeved on the first connection base 230, and can be connected with the first connection base 230. Disassemble the connection. The detachable connection methods include snap-on or threaded connections.

Further, a battery compartment 311 is provided in the installation housing 310 . The power supply battery 320 is disposed in the battery compartment 311 of the installation housing 310. The power supply battery 320 can provide electric energy for the light emitting device 100, the heat dissipation device 200 and the brightness adjustment device 400.

The second connection base 330 is disposed at an end of the installation shell 310 away from the heat sink 200 , and the second connection base 330 is connected to the installation shell 310 through screws. The second connection base 330 is also used to detachably connect with the brightness adjustment device 400 .

Please refer to FIGS. 2 , 5 , 6 , 7 and 8 . The brightness adjustment device 400 includes a base 410 , a rotating ring 420 and a circuit board 430 . The base 410 and the second connection base 330 are detachably connected, such as snap-fit or threaded connection. A receiving cavity 411 is provided inside the base 410 , and a magnetic induction component is provided inside the base 410 . The magnetic induction component includes at least two magnetic sensors 440 . In this embodiment, the magnetic induction assembly includes two magnetic sensors 440, and the two magnetic sensors 440 are arranged offset along the radial direction of the accommodation cavity 411, that is, the two magnetic sensors 440 are not on the same straight line passing through the radial direction (please refer to the figure) 8). In this embodiment, the two magnetic sensors 440 are respectively close to the inner wall of the base 410 .

The rotating ring 420 is sleeved on the outer peripheral surface of the base 410, and the rotating ring 420 is rotationally matched with the base 410, so that the rotating ring 420 is sleeved on the base 410 and can rotate freely. A preset number of first magnet pieces 450 are distributed along the circumferential direction on the inner wall surface of the rotating ring 420 . The first magnet pieces 450 are used for inductive cooperation with the magnetic sensor 440 .

The circuit board 430 is disposed on the base 410 and located in the accommodation cavity 411. A control unit (not shown) is integrated on the circuit board 430. The control unit is electrically connected to the two magnetic sensors 440 respectively. The control unit is configured to acquire two magnetic sensors. The magnetic flux change information in the magnetic sensor 440 is used to adjust the brightness of the lamp according to the magnetic flux change information.

Furthermore, in this embodiment, the two magnetic sensors 440 are both Hall sensors.

Optionally, a preset number of first magnet pieces 450 are evenly distributed along the circumferential direction on the inner wall surface of the rotating ring 420 .

In some embodiments, the first magnet part 450 is bonded to the inner wall surface of the rotating ring 420. Specifically, glue is applied to the side where the first magnet part 450 is bonded to the rotating ring 420, and then the first magnet part 450 is Bonded to the inner wall surface of the rotating ring 420.

In other embodiments, the first magnet component 450 is embedded in the inner wall of the rotating ring 420. Specifically, a first receiving groove (not shown) is provided on the inner wall of the rotating ring 420, and the first magnet component 450 is It is clicked into the corresponding first receiving groove, and the first magnet part 450 is an interference fit with the first receiving groove, so as to prevent the first magnet part 450 from falling off from the first receiving groove, and the installation is more stable.

It can be understood that since the two magnetic sensors 440 are arranged in a radial offset along the accommodation cavity 411, that is to say, the two magnetic sensors 440 are asymmetrically arranged, so when the rotating ring 420 is rotated, through the two magnetic sensors 440 The magnetic flux is also different. The control unit generates corresponding control signals according to changes in the magnetic flux in the two magnetic sensors 440 to adjust the brightness of the light emitted by the light-emitting component 120, thereby achieving the purpose of brightness adjustment. Furthermore, in this embodiment, the rotation direction (forward and reverse) of the rotating ring 420 is associated with the brightening and darkening in the brightness adjustment mode. And it is defined that the rotating ring 420 rotates clockwise as forward rotation, and rotates counterclockwise as reverse rotation. Taking the perspective shown in Figure 8 as an example, in order to describe the technical solution of this embodiment more clearly, the following examples are given:

When the rotating ring 420 is rotated clockwise and the magnetic flux detected by the magnetic sensor 440 located above meets the preset value condition, and the magnetic flux detected by the magnetic sensor 440 located below is less than the preset value or the magnetic flux is 0, the rotating ring 420 is defined to be positive. Turn to brightening; when the rotating ring 420 is rotated counterclockwise, the magnetic flux detected by the magnetic sensor 440 located above meets the preset value condition, and the magnetic flux detected by the magnetic sensor 440 located below also meets the preset value condition, then it is defined Rotating ring 420 reverses to dim. It should be noted that the conditions for clockwise or counterclockwise rotation are not unique, nor are the corresponding methods of brightness adjustment and the rotation direction of the rotating ring 420 . The above conditions can be set according to actual conditions or needs. Therefore, it can be understood that the above are only examples and are not intended to limit the scope of protection of the present application.

It can also be understood that the accuracy of brightness adjustment is determined by the number of first magnet parts 450. The greater the number of first magnet parts 450, the higher the adjustment accuracy will be. Therefore, the number of the first magnet parts 450 is not limited in this embodiment.

Further, in this embodiment, the base 410 includes a base 412, a mounting plate 413, and a fixing ring 414. The base 412 is in the shape of a cylinder, and the accommodation cavity 411 is provided through the axis of the base. The base 412 is connected to the power supply device. The second connection base 330 in 300 is detachably connected. The mounting plate 413 is disposed on an end of the base body 412 away from the second connecting seat 330 . The mounting plate 413 is received in the accommodating cavity 411 and blocks the open end of the accommodating cavity 411 away from the second connecting seat 330 . The fixing ring 414 is detachably provided at an end of the base 412 away from the second connection base 330 , and the fixing ring 414 abuts the side of the mounting plate 413 facing away from the second connection base 330 to fix the mounting plate 413 to the base. 412 to prevent the mounting plate 413 from coming out.

Referring to FIG. 8 , in some embodiments, two magnetic sensors 440 are fixedly installed on the mounting plate 413 and extend along the direction in which the mounting plate 413 is close to the circuit board 430 . The angle C formed by the vertical lines connecting the two magnetic sensors 440 to the axis O of the base 410 is C, and the angle C is less than 180°.

Please refer to Figure 7. The inner wall of the rotating ring 420 is provided with a first limiting shoulder 421, which is annular. The outer peripheral surface of the base 410 is provided with a second limiting shoulder 4120. The first limiting shoulder 421 is annular. The limiting shoulder 421 abuts the second limiting shoulder 4120 to limit the axial movement of the rotating ring 420 along the base 410 .

Specifically, a stepped shaft structure is processed on the outer peripheral surface of the seat body 412, and a second limiting shoulder 4120 is formed at a sudden change in the outer diameter of the stepped shaft structure. In the same way, a stepped hole structure is processed along the axial direction on the inner wall of the rotating ring 420, and a first limiting shoulder 421 is formed at a sudden change in the inner diameter of the stepped hole structure.

Therefore, when installing the rotating ring 420, the end with the smaller outer diameter of the base body 412 is inserted until the first limiting shoulder 421 abuts the second limiting shoulder 4120, and then the rotating ring 420 is installed in place.

Referring to Figures 7 and 8, further, a plurality of second magnets 460 are evenly arranged on the inner wall surface of the base 412 along the circumferential direction. The second magnets 460 are used to magnetically cooperate with the first magnets 450, and the The opposite sides of the second magnet part 460 and the first magnet part 450 have opposite polarities. For example, the opposite sides of the first magnet part 450 and the second magnet part 460 are N pole and S pole respectively. The two magnetic sensors 440 are respectively located between two adjacent second magnet parts 460 to prevent the magnetic sensors 440 from being interfered by the second magnet parts 460 after installation.

It can be understood from this that when the rotating ring 420 rotates to the preset position, the rotating ring 420 is released, and the first magnet component 450 on the free-state rotating ring 420 and the third magnet on the base 412 use the principle of magnet attraction. The two magnet parts 460 attract each other, so that the rotating ring 420 automatically aligns and remains in its original position. Through the magnetic force between the first magnet part 450 and the second magnet part 460, a certain rotation resistance will be given to the rotating ring 420 to prevent the rotating ring 420 from continuing to rotate due to non-human factors, and at the same time improve the user experience.

In some embodiments, the second magnet component 460 is bonded to the inner wall surface of the base body 412. Specifically, glue is applied to the surface where the second magnet component 460 is bonded to the base body 412, and then the second magnet component 460 is bonded to the inner wall surface of the base body 412. Connected to the inner wall surface of the base 412.

In other embodiments, the second magnet component 460 is embedded in the inner wall of the base 412. Specifically, a second receiving groove 4121 is provided on the inner wall of the base 412, and the second magnet component 460 is inserted into the corresponding second receiving groove 4121. In the receiving groove 4121, and the second magnet member 460 and the second receiving groove 4121 are in interference fit to prevent the second magnet member 460 from falling off the second receiving groove 4121, and the installation is more stable.

In some embodiments, ticking teeth (not shown) are evenly provided on the inner wall surface of the rotating ring 420 along the circumferential direction, and elastic pieces (not shown) are installed on the outer peripheral surface of the base body 412, and the elastic pieces are in contact with the tooth tips of the ticking teeth. When rotating the rotating ring 420, through the contact between the elastic piece and the ticking teeth, the vibration of the elastic piece will make a "tick" sound. At the same time, the contact between the elastic piece and the tooth top of the ticking teeth will bring a certain resistance to the rotation of the rotating ring 420, thus also It can prevent the rotating ring 420 from continuing to rotate due to non-human factors, thereby improving the user experience.

In some embodiments, the outer circumferential surface of the rotating ring 420 is provided with anti-slip grooves 422 to facilitate the rotation of the rotating ring 420 . Optionally, the anti-skid patterns 422 are strip-shaped ridges extending along the axis of the rotating ring 420; or the anti-skid patterns 422 are annular ridges formed around the axis of the rotating ring 420; or they are criss-crossed. of relief.

In other embodiments, the anti-skid pattern 422 can be replaced with an anti-skid rubber pad.

In some embodiments, the power interface 470 and the display screen 480 are provided on the mounting plate 413 of the base 410 . Among them, the power interface 470 can be used to charge the power supply battery 320 in the power supply device 300, and can also provide power to external devices. The display screen 480 can display the brightness adjustment level, and can also display the power status of the power supply battery 320 .

Furthermore, this embodiment also provides a brightness adjustment device 400. The brightness adjustment device 400 has been described in detail above and will not be described again here.

The brightness adjustment device 400 provided in this embodiment can change the magnetic flux passing through the two magnetic sensors 440 by rotating the rotating ring 420, because the two magnetic sensors 440 are arranged in a radial offset along the accommodation cavity 411. , so when the rotating ring 420 is rotated forward and reverse, the magnetic flux passing through the two magnetic sensors 440 will be different, so that the control unit associates the forward and reverse rotation of the rotating ring 420 with the brightening and dimming of the lamp to achieve Flexible control of brightness and dimming of lamps is easy to operate and greatly improves the user experience.

In addition, by increasing the number of first magnet parts 450 in the rotating ring 420, high-precision brightness adjustment can be achieved to adapt to different users' needs for different brightness and further enhance the user experience.

The optional implementations of the embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present application are not limited to the specific details of the above implementations. Within the scope of the technical concept of the embodiments of the present application, the embodiments of the present application can be modified. The technical solution is subjected to various simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the present application.

In addition, it should be noted that each specific technical feature described in the above-mentioned specific embodiments can be combined in any suitable manner unless there is any contradiction. In order to avoid unnecessary repetition, the embodiments of this application combine various Possible combinations are not specified further.

In addition, any combination of different implementation modes of the embodiments of the present application can also be performed. As long as they do not violate the ideas of the embodiments of the present application, they should also be regarded as the content disclosed in the embodiments of the present application.

Claims

A brightness adjustment device, characterized in that it is applied to lamps, and the brightness adjustment device (400) includes:

The base (410) is provided with an accommodation cavity (411) inside. The base (410) is provided with a magnetic induction component. The magnetic induction assembly includes at least two staggered components arranged along the radial direction of the accommodation cavity (411). Magnetic Sensor(440);

The rotating ring (420) is sleeved on the outer peripheral surface of the base (410) and rotates with the base (410). The inner wall of the rotating ring (420) has a preset number distributed along the circumferential direction. The first magnet part (450) is used for inductive cooperation with the magnetic sensor (440); and

A circuit board (430) is provided on the base (410) and located in the accommodation cavity (411). A control unit electrically connected to the magnetic sensor (440) is integrated on the circuit board (430). The control unit is configured to obtain the change information of the magnetic flux in at least two of the magnetic sensors (440), and adjust the brightness of the lamp according to the change information of the magnetic flux.
The brightness adjustment device according to claim 1, characterized in that the magnetic sensor (440) is a Hall sensor.
The brightness adjustment device according to claim 1, characterized in that a preset number of the first magnet members (450) are evenly distributed along the circumferential direction on the inner wall surface of the rotating ring (420).
The brightness adjustment device according to claim 1, characterized in that the first magnet component (450) is bonded or embedded on the inner wall surface of the rotating ring (420).
The brightness adjustment device according to claim 1, characterized in that a plurality of second magnet pieces (460) are evenly arranged on the inner wall surface of the base (410) along the circumferential direction, and the second magnet pieces (460) It is used to magnetically cooperate with the first magnet part (450), and the polarity of the opposite side of the second magnet part (460) and the first magnet part (450) is opposite.
The brightness adjustment device according to claim 1, characterized in that the inner wall surface of the rotating ring (420) is provided with a first limiting shoulder (421), and the outer peripheral surface of the base (410) is provided with a third limiting shoulder. Two limiting shoulders (4120) contact the first limiting shoulder (421) and the second limiting shoulder (4120) to limit the rotating ring (420) along the base. (410) axial movement.
The brightness adjustment device according to claim 1, characterized in that the outer peripheral surface of the rotating ring (420) is provided with anti-slip patterns (422).
The brightness adjustment device according to claim 1, characterized in that an anti-slip rubber pad is provided on the outer peripheral surface of the rotating ring (420).
The brightness adjustment device according to claim 1, characterized in that the base (410) is provided with a power interface (470) and a display screen (480).
A lamp, characterized by comprising a light-emitting device (100) and a brightness adjustment device (400) according to any one of claims 1-9, the brightness adjustment device (400) being used to adjust the light-emitting device (100) brightness of the emitted light.