CN220623732U - Lighting device - Google Patents

Abstract

The present application relates to the field of lighting devices, and in particular, to a lighting device. The lighting device comprises a lamp tube, a lamp panel and a movable piece, wherein the lamp tube is provided with a lamp tube main body and a lighting part connected to one end of the lamp tube main body, and the lighting part is provided with a light outlet; the lamp panel is arranged in the illumination part, and a plurality of lamp beads for respectively emitting different light effects are arranged on one side, away from the lamp barrel main body, of the lamp panel along the circumferential direction; the movable piece is rotationally arranged between the lamp tube main body and the illumination part and is used for installing the lamp panel and driving the lamp panel to rotate so that the lamp beads positioned at different positions of the lamp panel alternately rotate to the optical center of the light outlet. The application provides a lighting device can adjust the position of lamp plate, realizes sending the optical center that the lamp pearl homoenergetic of different light efficiency moved to the light-emitting opening, has improved the light-emitting effect.

Description

Lighting device

Technical Field

The application relates to the field of lighting equipment, in particular to a lighting device.

Background

Because of the characteristic of portability, flashlights are widely applied in various fields, and along with the increase of demands, flashlights are developed into flashlights capable of emitting different light effects from traditional flashlights capable of emitting white light only. The common light effect switching implementation mode mainly comprises the following two modes, wherein one mode is to control output voltage by utilizing a relatively complex control circuit and matching with a key switch so as to control a lamp panel to emit different light effects under different voltages, so that the control circuit is complex, and the service life of a lamp bead is limited; in addition, a plurality of lamp beads are arranged on the lamp panel, each lamp bead corresponds to a group of switches, the lamp beads at different positions are controlled to be lightened through different switches, different light effects are emitted, but each lamp bead is not at an optical center point, when the light effects are switched, the positions of light spots change, and ideal light effects cannot be obtained.

Disclosure of Invention

The application provides a lighting device to solve lighting device such as flashlight lamp and change in light efficiency switching process facula position, the poor problem of luminous effect.

The application provides a lighting device, comprising:

the lamp tube is provided with a lamp tube main body and an illumination part connected to one end of the lamp tube main body, and the illumination part is provided with a light outlet;

the lamp panel is arranged in the illumination part, and a plurality of lamp beads used for respectively emitting different light effects are arranged on one side of the lamp panel along the circumferential direction;

the movable piece is rotationally arranged between the lamp tube main body and the illumination part and is used for installing the lamp panel and driving the lamp panel to rotate so that the lamp beads positioned at different positions of the lamp panel alternately rotate to the optical center of the light outlet.

In some embodiments, one of the end surface of the lamp cylinder body facing the lighting part and the end surface of the movable part facing one side of the lamp cylinder body is fixedly provided with a rotating shaft, and the other end surface is provided with a shaft hole in rotating fit with the rotating shaft; the rotating shaft deviates from the optical center of the light outlet by a preset distance, and all the lamp beads are rotationally symmetrically arranged relative to the rotating shaft.

In some embodiments, a driving member for driving the movable member to rotate is further included.

In some embodiments, the movable member is an inner toothed disc, and the outer periphery of the inner toothed disc is provided with first gear teeth;

an annular groove is formed in the outer wall between the lamp cylinder main body and the illumination portion, one side, close to the inner fluted disc, of the annular groove penetrates through the interior between the lamp cylinder main body and the illumination portion, the driving piece is an outer gear ring which is arranged in the annular groove and matched with the inner fluted disc, and second gear teeth meshed with the first gear teeth are arranged on the inner periphery of the outer gear ring.

In some embodiments, the end face of the movable part facing to one side of the lamp cylinder body is coaxially and fixedly connected with the driven gear, and the rotating shaft/shaft hole is arranged on the end face of the driven gear facing to one side of the lamp cylinder body;

the driving piece is a driving gear which is rotationally connected with the lamp tube main body, the driving gear is rotationally meshed with the driven gear, and at least part of the driving gear penetrates out and is exposed out of the outer wall of the lamp tube.

In some embodiments, the outer circumference of the outer ring gear is provided with corrugations for increasing frictional resistance.

In some embodiments, the end face of the movable part facing one side of the lamp tube main body is provided with a plurality of groups of first positioning mechanisms, and the end face of the lamp tube main body facing the lighting part is provided with a second positioning mechanism matched with the first positioning mechanism for positioning;

the second positioning mechanism coincides with the optical center of the light outlet, and the first positioning mechanism is arranged in one-to-one alignment with the lamp beads.

In some embodiments, the first positioning mechanism is a positioning groove and the second positioning mechanism is an elastic protrusion.

In some embodiments, the light collecting device further comprises a light collecting component, wherein the light collecting component is an optical lens arranged at the light outlet.

In some embodiments, the first electrode elastic sheet and the second electrode elastic sheet are arranged on the inner wall of the illumination part, which is close to one side of the lamp panel, in a vertically staggered manner;

the lower part of the peripheral wall surface of the lamp panel is provided with a second annular electrode which is in rotary contact with the second electrode elastic sheet, and the upper part of the peripheral wall surface of the lamp panel is provided with a plurality of groups of first electrode strips which are used for being in contact with the first electrode elastic sheet at intervals along the circumferential direction;

the second electrodes of all the lamp beads are electrically connected with the second annular electrode, the first electrode strips are arranged in one-to-one correspondence with the lamp beads and are electrically connected with the first electrodes of the lamp beads, and when any lamp bead rotates to the optical center of the light outlet, the corresponding first electrode strip is abutted with the first electrode elastic sheet to realize the electric conduction of the lamp bead.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the advantages that the lamp panel mounted on the movable piece is driven to rotate by means of the rotation of the movable piece relative to the lamp barrel main body, so that different lamp beads fixed on one side periphery of the lamp panel alternately rotate to the optical center of the light outlet, the lamp beads in the current working state are overlapped with the optical center of the light outlet, the optimal light outlet effect is ensured, and the problem of light spot position change in the light effect switching process is avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic view of a lighting device according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the other view of FIG. 2;

fig. 4 is a side view of a lamp panel according to an embodiment of the present application.

Wherein:

10-a lamp barrel body; 20-an illumination section; 21-an optical lens; 30-a lamp panel; 31-a first electrode strip; 32-a second ring electrode; 40-an inner fluted disc; 50-an outer gear ring; 60-rotating shaft; 70-shaft holes; 80-positioning grooves; 90-resilient protrusions.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

In order to solve the technical problems that the positions of light spots of the lamp beads emitting different light effects change and the luminous effect is poor when the light effects are switched in the prior art, the application provides a lighting device which can realize that the lamp beads emitting different light effects alternately move to the optical center of a light outlet and improve the light outlet effect.

Referring to fig. 1 to 3, the lighting device at least includes a light tube, a light plate 30 and a movable member. The lamp cartridge includes a lamp cartridge body 10 and an illumination portion 20, the lamp cartridge body 10 being mainly held by a user, and having a battery/accumulator mounted therein and a wire assembly for connecting the lamp panel 30. The illumination portion 20 is connected at the tip of lamp section of thick bamboo main part 10, and the light outlet is offered to illumination portion 20, encloses into a relatively confined cavity between illumination portion 20 and the lamp section of thick bamboo main part 10, and moving part and lamp plate 30 are arranged in the cavity between illumination portion 20 and lamp section of thick bamboo main part 10, and the moving part is located the one side that is close to lamp section of thick bamboo main part 10, and lamp plate 30 is located illumination portion 20 one side and the one side that lamp plate 30 set up the lamp pearl sets up towards the light outlet. The lamp plate 30 evenly arranges a plurality of groups of lamp pearls along circumference towards light outlet one side, and each lamp pearl is used for the circular telegram to send a kind of light efficiency, and the lamp plate 30 is fixed to the moving part through the one side installation that deviates from the light outlet. The movable member is rotatably connected to an end surface of the lamp tube main body 10 on the side facing the illumination portion 20. When the light efficiency needs to be switched, the control switch is used for controlling the lamp beads which emit the corresponding light efficiency to emit electricity to emit light, then the movable part rotates to drive the lamp panel 30 to rotate, so that the lamp beads at the periphery of the lamp panel 30 synchronously rotate, and after the emitted lamp beads move to the optical center positions corresponding to the light outlet, the movable part stops rotating, so that the light efficiency is switched, and meanwhile, the good light-emitting effect is ensured.

It should be noted that the movable member may be self-driven to rotate, for example, the movable member is connected to a micro motor, and the micro motor is in transmission connection with the movable member through a speed reducing mechanism; the movable part can also be driven to rotate by external force, such as an operator manually directly or indirectly drives the movable part to rotate. The rotation mode of the movable member is not specifically limited, and the principle of the present application will be described below by taking an example that an operator manually drives the movable member to rotate to drive the lamp panel 30 and the lamp beads to move, and the movable member adopting self-driving rotation also falls into the protection scope of the present application.

With continued reference to fig. 2 and 3, in this embodiment, the end surface of the lamp barrel body 10 adjacent to the movable member is provided with a rotating shaft 60, the end surface of the movable member facing the lamp barrel body 10 is correspondingly provided with a shaft hole 70 in rotation fit with the rotating shaft 60, and the movable member realizes rotation around the rotating shaft 60 through the shaft hole 70. Wherein, all the lamp beads are rotationally symmetrically arranged about the rotating shaft 60, the rotating shaft 60 deviates from the optical center of the light outlet by a preset distance, and the preset distance is equal to the distance between the center of the lamp bead and the center of the rotating shaft 60. It will be appreciated that there may be some damping between the shaft 60 and the shaft aperture 70 so that the movable member remains stationary relative to the shaft 60 after rotation in place, with the corresponding light bulb being located exactly at the optical center of the light outlet. In the illustrated embodiment, the rotating shaft 60 is disposed on the end face of the lamp barrel body 10, and the shaft hole 70 is formed on the end face of the movable member; the same applies to the structure in which the shaft 60 is provided in the movable member and the shaft hole 70 is provided in the end face of the lamp tube main body 10.

Because the movable part is used for installing the lamp panel 30, it is located between lamp barrel main body 10 and illumination portion 20 promptly and is located the inside of lamp barrel, and the movable part needs to rotate in order to adjust the position of different lamp pearls on the lamp panel 30, the size of movable part is usually limited, in order to conveniently follow lamp barrel outside manual drive movable part and rotate, the lighting device that this application embodiment provided still includes and is used for driving movable part pivoted driving piece, the driving piece realizes the pivoted connection of two through direct connection or transmission connection with the movable part, the driving piece is partly exposed outside the outer wall of lamp barrel at least, so that the operator manually stirs the driving piece and rotates, drive the movable part with the help of the driving piece and rotate, and then drive lamp panel 30 and rotate, adjust luminous lamp pearl to the optical center of light-emitting mouth.

In one embodiment provided in the present application, the movable member adopts the inner gear disc 40, and the attached lamp panel 30 can be fixed relative to the inner gear disc 40 by various modes such as clamping and gluing, so that the lamp panel 30 is driven to rotate when the inner gear disc 40 rotates; the outer circumference of the inner fluted disc 40 is uniformly provided with first gear teeth, the driving member adopts an outer gear ring 50, and the inner circumference of the outer gear ring 50 is uniformly provided with second gear teeth which are rotationally engaged with the first gear teeth. In order to realize the engagement of the inner toothed disc 40 inside the lamp tube and the outer gear ring 50 outside the lamp tube, the outer wall of the lamp tube at the connecting position of the lamp tube main body 10 and the lighting part 20 is provided with an annular groove, the nearest partial section of the annular groove from the outer periphery of the inner toothed disc 40 is penetrated and provided with an arc notch, the inner toothed disc 40 and the outer toothed ring 50 are engaged through the arc notch, and the rotation of the outer gear ring 50 can conveniently drive the rotation of the inner toothed disc 40, so that the rotation of the lamp panel 30 and the adjustment of the lamp bead position are realized. The outer wall of the outer ring gear 50 may be provided with insections or protruding points as needed to increase friction resistance and facilitate the operator to rotate the outer ring gear 50.

In another embodiment provided in the application, the movable piece can be coaxially and fixedly connected with a driven gear, the driven gear and the movable piece are integrally injection molded, and the driven gear is positioned on one side end face of the movable piece, which is close to the lamp cylinder main body 10; the driving piece adopts the drive gear of rotating connection in lamp section of thick bamboo main part 10, the arc notch is offered to the outer wall that the lamp section of thick bamboo was located in the hookup location of lamp section of thick bamboo main part 10 and illumination portion 20 equally, this arc notch link up to in the lamp section of thick bamboo to drive gear exposes in the outer wall of lamp section of thick bamboo through this arc notch at least partially, the driven gear of drive gear and moving part rotates the meshing, thereby make things convenient for the operator to stir the driven gear and drive driven gear and moving part and rotate, realize the position adjustment of the lamp pearl of lamp plate 30 week portion, improve the light-emitting effect.

On the basis of the embodiment, in order to ensure that each lamp bead can be aligned with the optical center of the light outlet after rotating. The embodiment of the application still sets up positioning mechanism between the terminal surface that moving part and lamp section of thick bamboo main part 10 are relative, and positioning mechanism specifically includes the first positioning mechanism that sets up at moving part orientation lamp section of thick bamboo main part 10 one side terminal surface and sets up the second positioning mechanism of lamp section of thick bamboo main part 10 laminating moving part terminal surface. The first positioning mechanisms are arranged in one-to-one alignment with the lamp beads on the lamp panel 30, wherein the one-to-one alignment comprises the first positioning mechanisms and the lamp beads with the number corresponding to that of the lamp beads, and each lamp bead and each first positioning mechanism are positioned on the same axis; the second positioning mechanism coincides with the optical center of the light outlet. By means of the cooperation positioning of the second positioning mechanism and the first positioning mechanism, the corresponding lamp beads are guaranteed to move to the optical center of the light outlet exactly.

In this embodiment, the first positioning mechanism adopts a positioning groove 80 formed on an end surface of the movable member far away from the lamp panel 30, the second positioning mechanism adopts an elastic protrusion 90 adapted to the positioning groove 80, the elastic protrusion 90 may be an elastic glass bead, and the positioning groove 80 is a hemispherical groove, so that the movable member is rotated with a small force after positioning to release the positioning between the first positioning mechanism and the second positioning mechanism. It will be appreciated that the same technical effect can be achieved by the first positioning mechanism using the elastic protrusions 90 and the second positioning mechanism using the positioning grooves 80.

To further improve the light emitting effect, the lighting device further includes a light condensing component disposed at the light emitting opening of the lighting portion 20, and in this embodiment, the light condensing component employs an optical lens 21 attached to the lamp panel 30 and disposed at the light emitting opening. In other embodiments, the light focusing component may also adopt a form of matching the reflector with a planar lens, and the position of each lamp bead on the lamp panel 30 after being rotated and matched and positioned by the first positioning mechanism and the second positioning mechanism coincides with the focal point of the reflector.

In the above embodiment, in order to realize that the lamp tube body 10 supplies power to the rotating lamp panel 30, the lamp tube body 10 may be directly connected with each lamp bead of the lamp panel 30 through a wire, and the lamp tube body 10 is provided with a control switch for controlling the on/off of the wire, and a certain length allowance needs to be reserved for the wire. Meanwhile, when the lamp panel 30 is regulated to rotate, the lamp panel 30 is prevented from rotating by more than 180 degrees to avoid winding of wires, and the position of each lamp bead on the lamp panel 30 can be regulated in a positive rotation and reverse rotation combined mode. The end surface of the movable part, which is matched with the lamp barrel main body 10, can be provided with a corresponding limiting structure or a gear structure according to the needs so as to limit the forward rotation and the reverse rotation angles, and the details are not repeated here.

In order to avoid winding wires caused by rotation of the lamp panel 30, as shown in fig. 4, in the structure of the lamp panel 30 provided in one embodiment of the present application, a first electrode strip 31 and a second annular electrode 32 are respectively disposed on the peripheral side wall of the lamp panel 30, the second annular electrode 32 is a ring-mounted metal electrode and is disposed at the lower part of the periphery of the lamp panel 30, and the second electrodes of all the lamp beads are electrically connected with the second annular electrode 32; the number of the first electrode strips 31 corresponds to the number of the lamp beads on the lamp panel 30, all the first electrode strips 31 are arranged at intervals along the upper part of the periphery of the lamp panel 30, and the first electrode of each lamp bead is electrically connected with the first electrode strips 31 on the periphery of the lamp bead.

The first electrode elastic sheet and the second electrode elastic sheet are arranged on the inner wall of the lighting part 20 in a vertically staggered manner, and are electrically connected with a power supply in the lamp tube main body 10, and the second electrode elastic sheet is positioned at the lower part of the first electrode elastic sheet and is arranged in a parallel manner. The second electrode elastic sheet is elastically abutted against the second annular electrode 32 of the lamp panel 30, and the electric connection with the second annular electrode 32 is always kept in the rotation process of the lamp panel 30; the first electrode elastic sheet is used for elastically abutting against the first electrode strip 31 at the upper part of the periphery of the lamp panel 30, and when the corresponding lamp bead rotates the optical center of the light outlet, the first electrode elastic sheet abuts against the first electrode strip 31 at the periphery of the corresponding lamp bead, and the lamp bead realizes electric conduction; when the lamp beads rotate to adjust positions, the first electrode elastic sheets are abutted against gaps between the first electrode strips 31, and no lamp beads emit light. The second ring electrodes 32 and the first electrode strips 31 alternately arranged along the upper part of the periphery of the lamp panel 30 effectively avoid the power supply problem in the rotating process of the lamp panel 30. The manner of rotationally powering the light panel 30 may also refer to existing rotationally powered structures, and is not limited to the embodiments herein. A control switch can be arranged between the power supply inside the lamp tube main body 10 and the first electrode elastic sheet and the second electrode elastic sheet according to the requirement.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A lighting device, comprising:

the lamp tube is provided with a lamp tube main body and an illumination part connected to one end of the lamp tube main body, and the illumination part is provided with a light outlet;

the lamp panel is arranged in the illumination part, and a plurality of lamp beads for respectively emitting different light effects are arranged on one side, away from the lamp barrel main body, of the lamp panel along the circumferential direction;

the movable piece is rotationally arranged between the lamp tube main body and the illumination part and is used for installing the lamp panel and driving the lamp panel to rotate, so that the lamp beads at different positions of the lamp panel alternately rotate to the optical center of the light outlet.

2. A lighting device as recited in claim 1, wherein one of an end surface of said lamp tube main body facing said lighting portion and an end surface of said movable member facing said lamp tube main body side is fixedly provided with a rotation shaft, and the other is provided with a shaft hole in rotation fit with said rotation shaft; the rotating shaft deviates from the optical center of the light outlet by a preset distance, and all the lamp beads are rotationally symmetrically arranged relative to the rotating shaft.

3. A lighting device as recited in claim 2, further comprising a drive element for driving rotation of said movable element.

4. A lighting device as recited in claim 3, wherein said movable member is an internal toothed disc, and a first gear tooth is provided on an outer periphery of said internal toothed disc;

the lamp tube comprises a lamp tube body, a lamp tube illuminating part, a driving piece, an annular groove, an outer gear ring and an outer gear ring, wherein the outer wall between the lamp tube body and the illuminating part is provided with the annular groove, one side of the annular groove, which is close to the inner gear ring, penetrates through the lamp tube body and the inner part between the lamp tube body and the illuminating part, the driving piece is an outer gear ring which is arranged in the annular groove and is matched with the inner gear ring, and the inner circumference of the outer gear ring is provided with second gear teeth meshed with the first gear teeth.

5. A lighting device as recited in claim 3, wherein said movable member has a driven gear coaxially and fixedly connected to an end surface of said movable member facing said lamp housing main body, and said rotary shaft/said shaft hole is provided in an end surface of said driven gear facing said lamp housing main body;

the driving piece is a driving gear which is rotationally connected with the lamp tube main body, the driving gear is rotationally meshed with the driven gear, and at least part of the driving gear penetrates out and is exposed out of the outer wall of the lamp tube.

6. A lighting device as recited in claim 4, wherein an outer circumference of said outer ring gear is provided with a ridge for increasing frictional resistance.

7. A lighting device as recited in any one of claims 1-6, wherein a plurality of sets of first positioning mechanisms are provided on an end surface of said movable member facing said lamp tube main body, and a second positioning mechanism which is positioned in cooperation with said first positioning mechanism is provided on an end surface of said lamp tube main body facing said lighting portion;

the second positioning mechanism is coincident with the optical center of the light outlet, and the first positioning mechanism is arranged in one-to-one alignment with the lamp beads.

8. A lighting device as recited in claim 7, wherein said first positioning mechanism is a positioning groove and said second positioning mechanism is an elastic projection.

9. A lighting device as recited in claim 1, further comprising a light gathering component, said light gathering component being an optical lens disposed at said light exit.

10. The lighting device of claim 1, wherein the lighting portion has a first electrode dome and a second electrode dome arranged in a staggered manner up and down on an inner wall of the lighting portion adjacent to the side of the light panel;

the lower part of the outer peripheral wall surface of the lamp panel is provided with a second annular electrode which is in rotary contact with the second electrode elastic sheet, and the upper part of the outer peripheral wall surface of the lamp panel is provided with a plurality of groups of first electrode strips which are used for being in contact with the first electrode elastic sheet in a circumferential direction at intervals;

all the second electrodes of the lamp beads are electrically connected with the second annular electrodes, the first electrode strips are arranged in one-to-one correspondence with the lamp beads and are electrically connected with the first electrodes of the lamp beads, and when any one of the lamp beads rotates to the optical center of the light outlet, the corresponding first electrode strip is abutted with the first electrode elastic sheet to realize the electric conduction of the lamp beads.