CN114352984B - Electronic screen light filling lamp with adjustable support - Google Patents

Abstract

The invention relates to a lighting device, in particular to an electronic screen light supplement lamp with an adjustable bracket, which comprises a bottom support piece, an adjusting arm, a clamping mechanism and a lighting structure, wherein the bottom support piece is provided with a light source; a second sleeving part is arranged at one end of the adjusting arm and is in running fit with a locking mechanism at the rear part of the bottom supporting piece; the clamping mechanism is used for elastically clamping the electronic screen from up, down, left and right directions; the lighting structure is arranged at the top of the clamping mechanism, one end of the lighting structure protrudes out of the clamping mechanism, and the lighting structure is used for diverging light beams from the top of the clamping mechanism towards the electronic screen to supplement light for the electronic screen; the illumination structure of design realizes when the light filling to the electronic screen top, and illumination does not influence the electronic screen and shows, and the light of light filling is not gone into the eye, and the lamp pearl does not have the model light, does not have the lamp eye.

Description

Electronic screen light filling lamp with adjustable support

Technical Field

The invention relates to a lighting device, in particular to an electronic screen light supplement lamp with an adjustable support.

Background

The intelligent mobile terminal is more and more widely used in daily life and work of people, light emitted by a screen of the mobile terminal when the intelligent mobile terminal is used can affect the eyesight of a user to a certain extent, and particularly, under the environment that the light is not particularly ideal, the intelligent mobile terminal can cause greater damage to eyes; for example: and after the lamp is turned off, the user looks at the mobile phone on the bed, and learns in a room with dark light by using a tablet personal computer.

Under the condition that the ambient light is not ideal, the eyesight of a user can be affected when the user watches the electronic screen for a long time, and the blue light emitted by the screen can further affect the eyesight and aggravate the eyesight deterioration. In order to solve the problems, most users can choose to add extra light to eliminate the influence of the light emitted by the electronic screen on the eyesight, but the existing lamp cannot ensure the uniformity and softness of the light during light supplement, so that the light in a local area of the screen is strong, and the other part of the light is light in brightness and even can be reflected to the screen to cause light reflection; although light supplement lamps with corresponding purposes are available in the market, the light emitted by the existing light supplement lamps is divergent light, and the light cannot be uniformly dispersed and does not enter a mobile phone screen, so that the problems of floodlight and lamp eyes still exist, and the light directly enters the eyes of a user or is reflected by the screen to generate glare, so that the vision of the user is influenced.

Therefore, the invention provides the electronic screen light supplement lamp with the adjustable support, and the intelligent terminal (such as a mobile phone, a tablet personal computer and the like) is used in various light environments, so that the eyes of a user can be well protected, the stimulation of the blue light of the screen to the eyes of the user is reduced, and the radiation is reduced.

Disclosure of Invention

The invention aims to provide an electronic screen light supplementing lamp with an adjustable support, and aims to solve the problem that light rays influence the display of an electronic screen in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a take electronic screen light filling lamp of adjustable support, includes:

a bottom support;

one end of the adjusting arm is provided with a second sleeving part which is in running fit with a locking mechanism at the rear part of the bottom supporting piece;

the clamping mechanism is used for elastically clamping the electronic screen from the upper direction, the lower direction and the left direction;

the lighting structure is arranged at the top of the clamping mechanism, one end of the lighting structure protrudes out of the clamping mechanism, and the lighting structure is used for diverging light beams from the top of the clamping mechanism towards the direction of the electronic screen to supplement light for the electronic screen;

wherein the lighting structure comprises:

one end of the shell protrudes out of the top of the clamping mechanism and is detachably arranged on the top of the clamping mechanism;

the LED lamp bead is arranged in the shell and fixed with the inner wall of the shell through a light blocking piece, and the LED lamp bead is used for emitting a point-shaped direct light beam towards one end of the shell protruding out of the clamping mechanism;

the semitransparent diffusion film is arranged along the light-emitting direction of the LED lamp beads in an arc shape and covers the light-emitting surface of the LED lamp beads;

the light outlet is arranged at the lower part of the section of the shell protruding out of the clamping mechanism, and an anti-reflection part is arranged at one side of the light outlet far away from the clamping mechanism;

a light absorption coating is arranged in a section of the shell protruding out of the clamping mechanism, and a triangular restraining part integrally formed with the inner wall of the shell is arranged on the upper portion of the semitransparent diffusion film.

The electronic screen fill light as described above: the fixture includes:

the top of the back plate is fixedly provided with a top box perpendicular to the back plate, a slot detachably connected with the shell is formed in the top box, a first sleeving part is integrally arranged on one side, close to the adjusting arm, of the lower portion of the back plate, and the first sleeving part is fixedly in interference fit with the rotating shaft;

the vertical clamping structure is arranged on one surface of the back plate, which is far away from the adjusting arm, and is used for elastically clamping the electronic screen from the top and the bottom of the electronic screen along the length direction of the electronic screen;

the side clamping structures are two groups and symmetrically arranged on two sides of the back plate and used for elastically clamping the electronic screen from two sides along the width direction of the electronic screen.

The electronic screen fill light as described above: the vertical clamping structure includes:

the upper clamping piece is bent from top to bottom, and the upper end of the upper clamping piece is fixed to the upper part of one surface of the back plate, which is far away from the adjusting arm;

the supporting piece is movably connected with the back plate along the length direction of the back plate; a movable cavity is formed in the back plate along the length direction of the back plate, the movable cavity penetrates through the bottom of the back plate, and the upper part of the supporting piece is in sliding fit with the movable cavity;

the vertical elastic assembly is arranged on one surface, close to the adjusting arm, of the back plate and is connected with the supporting piece;

the lower part of the supporting piece is bent from bottom to top, a through groove is formed in one surface, close to the adjusting arm, of the back plate, and the vertical elastic assembly is connected with the supporting piece through the through groove.

The electronic screen fill light as described above: the vertical elastic assembly includes:

the mounting protrusion penetrates through the through groove and is fixed on one surface of the supporting piece, which is close to the adjusting arm;

one end of the vertical pull rod is fixed with the mounting protrusion and the vertical pull rod is arranged along the length direction of the back plate;

the vertical fixing cylinder is fixed at the lower part of the top box and is sleeved with the upper section part of the vertical pull rod in a sliding manner;

the first elastic piece is used for elastically connecting the vertical pull rod with the vertical fixed cylinder.

The electronic screen fill light as described above: the side clamping structure includes:

the horizontal fixing cylinder is horizontally fixed on one surface of the back plate, which is close to the adjusting arm;

the horizontal pull rod is combined with the horizontal fixing cylinder in a sliding sleeve mode and penetrates out of one end of the horizontal fixing cylinder;

the transverse driving plate and the horizontal pull rod penetrate through one end of the horizontal fixing cylinder to be fixed;

the side clamping piece is fixed on the transverse driving plate;

the section of the horizontal pull rod sleeved in the horizontal fixing barrel is sleeved with a second elastic piece, and the second elastic piece is used for elastically connecting the horizontal pull rod with the horizontal fixing barrel.

The electronic screen fill light as described above: the side clamping structures are connected with the vertical clamping structures through synchronous structures, and the synchronous structures drive the transverse driving plates in the two groups of side clamping structures to be separated from each other when the bearing piece is pulled downwards;

the synchronous structure comprises an opening piece which is fixed on the lower part of the mounting protrusion and is in an inverted equilateral triangle shape, and an extrusion wheel which is rotatably arranged on one end of the transverse driving plate close to the through groove.

The electronic screen fill light as described above: the rear part of the bottom supporting piece is integrally provided with a first rotating part and a second rotating part which are symmetrical, and the second sleeving part is respectively connected with the first rotating part and the second rotating part through a locking mechanism;

the locking mechanism comprises a first locking structure for connecting the first rotating part and the second nesting part, a second locking structure for connecting the second rotating part and the second nesting part, and a clutch assembly arranged in the second locking structure and used for controlling the first locking structure and the second locking structure to be combined and separated.

The electronic screen fill light as described above: the first locking structure comprises a movable locking piece sleeved in the second sleeving part, a retaining sleeve elastically connected with the movable locking piece through a third elastic piece, and a first connecting piece connected with the first rotating part and used for limiting the axial position of the retaining sleeve;

the movable locking piece is in a cylindrical shape with one closed end and an opening at the other end, and one circle of first inclined locking teeth are arranged on one side, facing the second locking structure, of the closed end of the movable locking piece at equal intervals along the circumference; one side of the third elastic piece is attached to the closed end of the movable locking piece, and the other side of the third elastic piece is attached to the end part of the first connecting piece;

the retaining sleeve is a hollow stepped shaft with two through ends, a section of outer wall with smaller diameter on the retaining sleeve is provided with a third clamping key, and the inner wall of the movable locking piece is provided with a fourth key groove in sliding fit with the third clamping key;

a second clamping key is arranged on the outer wall of the section of the holding sleeve with the larger diameter, and a third key groove matched with the second clamping key is formed in the inner wall of the first rotating portion.

The light supplement lamp of the electronic screen: the second locking structure comprises a fixed locking piece sleeved in the second sleeving part and a second connecting piece connected with the second rotating part and used for limiting the axial position of the fixed locking piece; a through hole is formed in the center of the second connecting piece;

two ends of the fixed locking piece are communicated, and one end of the fixed locking piece facing the movable locking piece is provided with a circle of second inclined locking teeth staggered with the first inclined locking teeth at equal intervals along the circumference; the first oblique locking tooth and the second oblique locking tooth are opposite in inclination direction;

a key groove is formed in the inner wall of the second rotating portion, the key groove penetrates through the second rotating portion, a second key groove is formed in a section, close to the second rotating portion, of the inner wall of the second sleeving portion, and a first clamping key is arranged on the outer wall of the fixed locking piece.

The electronic screen fill light as described above: the clutch component comprises an unlocking rod movably connected with the second connecting piece, the unlocking rod penetrates through the through hole and the fixed locking piece, a groove is formed in one end, facing the movable locking piece, of the unlocking rod, a ball is movably embedded in the groove, and the ball is attached to one surface, facing the second connecting piece, of the closed end of the movable locking piece;

a section of the unlocking rod, which is close to the second rotating part, is provided with a round cap, the inner wall of the second connecting piece is provided with a sliding cavity, the length of which is greater than that of the round cap, and the round cap and the sliding cavity are in clearance fit.

Compared with the prior art, the invention has the beneficial effects that:

firstly, through the lighting structure designed in the invention, when the top of the electronic screen is subjected to light supplement, the display of the electronic screen is not influenced by illumination, the light supplemented does not enter the eyes, and the lamp beads have no model light and no lamp eyes.

Secondly, the electronic screen can be elastically and stably clamped from four directions by the clamping mechanism, the electronic screens with different widths and length sizes can be clamped by adopting a flexible clamping mode, the application range is wide, the clamping force is increased along with the increase of the length and width sizes of the electronic screen, and the phenomenon that the clamping force is insufficient and unstable due to the over-heavy dead weight of the electronic screen with larger size is prevented; in addition, the mechanism is high in stability and not easy to damage.

Finally, the included angle between the adjusting arm and the bottom supporting piece can be adjusted and fixed by means of the locking mechanism, the electronic screen can be adjusted to any height within a certain range, and the falling condition cannot occur.

Drawings

Fig. 1 is a schematic structural view of a light-compensating lamp of an electronic screen with an adjustable bracket.

Fig. 2 is a schematic structural view of the light supplement lamp of the electronic screen with the adjustable bracket in another direction.

Fig. 3 is a schematic structural view of the electronic screen light supplement lamp with the adjustable bracket after the lighting structure is detached from the top box.

Fig. 4 is a schematic perspective view of an illumination structure in a light-compensating lamp of an electronic screen with an adjustable bracket.

Fig. 5 is a top view of an illumination structure in a light supplement lamp for an electronic screen with an adjustable bracket.

Fig. 6 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 5.

Fig. 7 is a schematic structural diagram of a clamping mechanism and an illumination structure in the light-compensating lamp of the electronic screen with the adjustable bracket.

Fig. 8 is a schematic structural view of the clamping mechanism and the lighting structure in another position of the light-compensating lamp for an electronic screen with an adjustable bracket.

Fig. 9 is a schematic structural view of the electronic screen light supplement lamp with the adjustable bracket after the support member and the vertical pull rod are respectively detached from the back plate and the vertical fixing cylinder.

Fig. 10 is a schematic structural view of the electronic screen light supplement lamp with the adjustable bracket after the horizontal pull rod is detached from the horizontal fixing cylinder.

Fig. 11 is a schematic structural view of the light supplement lamp with an adjustable bracket after the rotating shaft is separated from the ferrule and the first fitting portion.

Fig. 12 is a schematic structural view of the damper sleeve detached from the rotary shaft based on fig. 11.

Fig. 13 is a schematic structural view of the electronic screen light supplement lamp with the adjustable bracket after the adjustment arm, the bottom support member, and the locking mechanism are detached.

Fig. 14 is a schematic structural view of fig. 12 from another angle.

Fig. 15 is a side view of an adjusting arm, a bottom support member, and a locking mechanism in a light supplement lamp for an electronic screen with an adjustable bracket.

Fig. 16 is a sectional view taken along line B-B in fig. 15.

FIG. 17 is a schematic view of the adjustment arm and base support when disassembled and the locking mechanism axially disassembled.

Fig. 18 is a partial structure sectional view of fig. 17.

Fig. 19 is a schematic view of the structure of fig. 17 from another view angle.

Fig. 20 is a cut-away view of a portion of the structure of fig. 19.

Fig. 21 is a schematic structural view of the light supplement lamp with an adjustable bracket when the movable locking piece is separated from the inclined locking teeth of the fixed locking piece.

Fig. 22 is a light ray diagram emitted from a conventional LED lamp.

Fig. 23 is a light ray diagram emitted by the fill-in light of the present invention.

Reference numerals are as follows:

1-a bottom support;

2-adjusting the arm;

3-a back plate;

4-an illumination structure; 401-LED lamp beads; 402-a translucent diffuser film; 403-light barriers; 404-a housing; 405-a light absorbing coating; 406-a light exit; 407-a beam zone; 408-a reflection-eliminating part; 409-no light zone; 410-a light supplement lamp bead; 411-triangular restraints;

5-a movable cavity;

6-a support member;

7-penetrating a groove;

8-a vertical pull rod;

9-a vertically fixed cylinder;

10-a first elastic member;

11-an upper engaging member;

12-a spreader;

13-an extrusion wheel;

14-a transverse drive plate;

15-side engaging members;

16-a horizontal pull rod;

17-a second elastic member;

18-a horizontal fixed cylinder;

19-a damping sleeve;

20-a rotating shaft;

21-a first rotating part;

22-a second rotating part;

23-connector No. one;

24-connector No. two;

25-a movable closure;

26-securing the closure;

27-a retaining sleeve;

28-an unlocking lever;

29-a third elastic member;

30-a ball bearing;

31-keyway No. one;

32-card number one;

33-key slot number two;

34-key slot number three;

35-card No. two key;

36-card No. three key;

37-key slot No. four;

38-a first nesting portion;

39-a ferrule;

40-a second nesting portion;

41-groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Along with the popularization of intelligent mobile terminals, more and more users utilize intelligent mobile terminals to study interactively, for example, video recording live broadcast and/or video call and the like, in order to ensure that the picture of an electronic screen of the intelligent terminal is clear, a light supplementing lamp is often used for enhancing light, but the existing light supplementing lamp only has the function of increasing brightness, and the light cannot be uniformly distributed and softly, so that the display of the electronic screen is influenced.

Therefore, the present invention provides an electronic screen fill-in light with an adjustable bracket, please refer to fig. 1, fig. 2, fig. 3, fig. 11 and fig. 12, as an embodiment of the present invention, including:

a bottom support 1, the bottom support 1 being of lightweight design; specifically, a plurality of hollowed-out grooves are formed in the bottom support 1, so that material cost can be saved, and the weight of the bottom support 1 can be reduced.

One end of the adjusting arm 2 is provided with a second sleeving part 40 which is used for being in running fit with a locking mechanism at the rear part of the bottom supporting piece 1; the included angle between the adjusting arm 2 and the bottom supporting piece 1 can be adjusted through the mutual matching of the second nesting part 40 and the locking mechanism;

when using, at first place bottom support piece 1 level and steadily on direct broadcast platform (or table platform), then make 2 tip of regulating arm rotate around second registrates portion 40 through the unblock to locking mechanism, adjust the horizontal contained angle of regulating arm 2, adjust to reuse locking mechanism after the suitable position with the tip of regulating arm 2 fixed with second registrates portion 40, keep the contained angle between regulating arm 2 and the table platform stable.

The clamping mechanism is in rotating fit with a hoop 39 arranged at the other end of the adjusting arm 2 and is used for elastically clamping the electronic screen from the upper direction, the lower direction, the left direction and the right direction;

in detail, the hoop 39 is rotationally matched with the clamping mechanism through a rotating shaft 20, and a damping sleeve 19 is arranged at the joint of the hoop 39 and the rotating shaft 20; the rotating shaft 20 is fixedly matched with the clamping mechanism, and the damping sleeve 19 is a soft rubber damping shaft sleeve.

The electronic screen can be clamped and fixed on the upper part of the adjusting arm 2 by the aid of the clamping mechanism, the height of the clamping mechanism and the electronic screen is adjusted by adjusting the horizontal included angle of the adjusting arm 2, and after the height of the electronic screen is adjusted, the electronic screen is kept at a proper shooting angle by rotating the clamping mechanism.

It should be noted that, because the rotating shaft 20 and the clamping mechanism are fixedly matched, and the rotating shaft 20 and the hoop 39 are rotatably matched through the damping sleeve 19, a large rotating friction force exists between the rotating shaft 20 and the damping sleeve 19, and between the damping sleeve 19 and the hoop 39, and after the rotating shaft 20 is rotated relative to the hoop 39 by an external force to keep the electronic screen at a proper shooting angle, the rotating shaft 20 will not deflect due to the self weight of the electronic screen and the clamping mechanism after the external force is removed.

The lighting structure 4 is arranged at the top of the clamping mechanism, one end of the lighting structure 4 protrudes out of the clamping mechanism, and the lighting structure 4 is used for diverging light beams from the top of the clamping mechanism towards the direction of the electronic screen, so that light is supplemented for the electronic screen, and the display of the electronic screen cannot be influenced.

As another embodiment of the present invention, please refer to fig. 4 to 6, the lighting structure 4 includes a housing 404 detachably disposed at the top of the clamping mechanism;

one end of the housing 404 protrudes from the top of the clamping mechanism.

The LED lamp bead 401 is used for emitting a point-like direct light beam, and the LED lamp bead 401 is arranged in the shell 404 and is fixed with the inner wall of the shell 404 through a light blocking piece 403; the light blocking member 403 is arranged to block light beams from overflowing from the back of the LED lamp bead 401;

the light emitting direction of the LED lamp bead 401 is towards the end of the housing 404 protruding from the clamping mechanism, wherein the light emitting angle of the LED lamp bead 401 is 120 °.

The translucent diffusion film 402 covers the light-emitting surface of the LED lamp bead 401, and the translucent diffusion film 402 is arranged along the light-emitting direction of the LED lamp bead 401 in an arc shape;

after a punctiform direct light beam emitted by the LED lamp bead 401 irradiates the translucent diffusion film 402, the light beam diffuses and softens the light beam in a closed area covered by the translucent diffusion film 402, so that the light beam irradiated by the arc-shaped translucent diffusion film 402 has no lamp shadow, no glare and enters a space of the shell 404 protruding out of the clamping mechanism;

the light beam processed by the arc-shaped semitransparent diffusion film 402 becomes a full-space light beam, and the light distribution is uniform.

A light outlet 406, wherein the light outlet 406 is arranged at a lower part of the housing 404 protruding out of the clamping mechanism, and an anti-reflection part 408 is arranged at one side of the light outlet 406 far away from the clamping mechanism;

note that the side of the antireflection portion 408 facing the light exit port 406 does not have a reflection function, and the light processed by the arc-shaped translucent diffusion film 402 exits through the light exit port 406, and since the side of the antireflection portion 408 facing the light exit port 406 does not have a reflection function, the light exiting from the light exit port 406 does not enter the no light zone 409.

In addition, a layer of light absorption coating 405 is arranged in a section of the shell 404 protruding out of the clamping mechanism, and a triangular restraint part 411 integrally formed with the inner wall of the shell 404 is arranged at the upper part of the semitransparent diffusion film 402;

the angle of the light emitted from the translucent diffusion film 402 is controlled by the triangular restraining part 411, so that the light emitted from the translucent diffusion film 402 is shielded by the triangular restraining part 411, the light emitting angle is changed to 50-60 degrees, and the light is emitted through the light outlet 406, a fixed beam angle of the beam area 407 in the figure is formed, and an ideal optical effect is achieved;

the light-absorbing coating 405 disposed in the housing 404 can prevent the light from being reflected and refracted disorderly in the housing 404, so as to ensure that the light is not reflected or refracted to the no-light region 409;

in addition, if the irradiation angle of the beam region 407 is to be changed, the size of the light outlet 406 can be changed, the width of the light outlet 406 is 1.5-4.5 mm, and the optical irradiation angle emitted from the light outlet 406 can be 15-65 °.

Finally, one side upper portion that deviates from LED lamp pearl 401 at casing 404 is provided with light filling lamp pearl 410, can give out light at the top of casing 404 through light filling lamp pearl 410, increases space light, promotes visual comfort level.

In this embodiment, please refer to fig. 23, the supplementary lighting is disposed at the top of the electronic screen, and one side of an included angle between the light beam area 407 formed by the supplementary lighting is parallel to the electronic screen, and the other side of the included angle is diffused toward a direction away from the electronic screen, so that the light of the supplementary lighting does not affect the display of the electronic screen, the light distribution area is relatively flat, the light of the supplementary lighting does not enter the eye, and the lamp bead has no model light or no lamp eye.

However, the light emitted from the conventional LED lamp is distributed around, as shown in fig. 22, and is easily refracted or reflected to the electronic screen.

Referring to fig. 1, fig. 2, fig. 3, fig. 7, fig. 8, fig. 9 and fig. 10, as still another embodiment of the present invention, the clamping mechanism includes:

a top box perpendicular to the backboard 3 is fixed on the top of the backboard 3, a slot detachably connected with the shell 404 is formed in the top box, a first nesting portion 38 is integrally arranged on one side of the lower portion of the backboard 3 close to the adjusting arm 2, and the first nesting portion 38 is fixed with the rotating shaft 20 in an interference fit manner;

the first sleeve part 38 and the rotating shaft 20 are fixed, and then the damping sleeve 19 and the hoop 39 are matched to realize the rotating fit between the back plate 3 and the adjusting arm 2, and the damping between the back plate 3 and the adjusting arm 2 is relatively large, so that the rotating shaft 20 is prevented from rotating relative to the hoop 39 under the self-weight action of the back plate 3, the top box and the electronic screen.

The vertical clamping structure is arranged on one surface of the back plate 3, which is far away from the adjusting arm 2, and is used for elastically clamping the electronic screen from the top and the bottom of the electronic screen along the length direction of the electronic screen;

the two groups of side clamping structures are symmetrically arranged on two sides of the back plate 3 and are used for elastically clamping the electronic screen from two sides along the width direction of the electronic screen;

in this embodiment, through the side clamp structure and the vertical clamp structure that set up can be on a parallel with and laminate the backplate 3 and press from both sides tightly, arrange the backplate 3 in and deviate from the one side of adjusting arm 2 on, guarantee from the light-emitting port 406 the light of beating evenly disperse in the place ahead of electronic screen, and can not influence the screen display.

Referring to fig. 7, 8, 9 and 10, as another embodiment of the present invention, the vertical clamping structure includes an upper engaging member 11 fixed on an upper portion of a surface of the backboard 3 away from the adjusting arm 2, a supporting member 6 movably connected to the backboard 3 along a length direction of the backboard 3, and a vertical elastic component disposed on a surface of the backboard 3 adjacent to the adjusting arm 2 and connected to the supporting member 6;

the upper clamping piece 11 is bent from top to bottom, the lower part of the support piece 6 is bent from bottom to top, the electronic screen can be clamped on the back plate 3 along the length direction of the electronic screen by utilizing the lower parts of the upper clamping piece 11 and the support piece 6, and the electronic screen is clamped and fixed from the vertical direction.

Furthermore, a movable cavity 5 is formed in the back plate 3 along the length direction of the back plate, the movable cavity 5 penetrates through the bottom of the back plate 3, a through groove 7 is formed in one surface, close to the adjusting arm 2, of the back plate 3, the vertical elastic assembly is connected with the supporting piece 6 through the through groove 7, and the upper portion of the supporting piece 6 is in sliding fit with the movable cavity 5.

In this embodiment, when the electronic screen needs to be clamped on the backboard 3, the lower part of the supporting member 6 is pulled down to slide the upper part of the supporting member 6 in the movable cavity 5, and the elastic potential energy of the vertical elastic assembly is continuously increased in the process of sliding down the supporting member 6;

when the lower part of the supporting piece 6 is pulled down to a proper position, the electronic screen is vertically placed on the back plate 3 and attached to the back plate 3, then the lower part of the supporting piece 6 is loosened, the supporting piece 6 is driven to slide upwards along the movable cavity 5 under the action of the elastic potential energy of the vertical elastic assembly, and the electronic screen is clamped on the back plate 3 from the vertical direction by means of the matching of the bending section at the lower part of the supporting piece 6 and the upper clamping piece 11.

Referring to fig. 9, as another embodiment of the present invention, the vertical elastic assembly includes a mounting protrusion fixed on one surface of the supporting member 6 adjacent to the adjusting arm 2 through the through slot 7, a vertical pull rod 8 having one end fixed to the mounting protrusion and arranged along the length direction of the backboard 3, a vertical fixing cylinder 9 fixed on the lower portion of the top box and slidably sleeved on the upper portion of the vertical pull rod 8, and a first elastic member 10 for elastically connecting the vertical pull rod 8 and the vertical fixing cylinder 9.

Furthermore, first elastic component 10 cover is established vertical pull rod 8 registrate in one section in the vertical solid fixed cylinder 9 is provided with the flange at vertical pull rod 8's top, the upper end of first elastic component 10 with the flange laminating, the lower extreme with the ladder laminating that the lower extreme opening part of vertical solid fixed cylinder 9 set up.

In the embodiment, in the process of pulling down the supporting piece 6, the supporting piece 6 slides down along the movable cavity 5 to drive the mounting protrusion to slide down, so as to drive the vertical pull rod 8 to move down, the flange at the top of the vertical pull rod 8 is continuously close to the opening at the lower end of the vertical fixed cylinder 9 in the vertical fixed cylinder 9, and finally the first elastic piece 10 is continuously compressed;

after the electronic screen is arranged between the lower parts of the upper clamping piece 11 and the supporting piece 6, when the lower part of the supporting piece 6 is released, the compressed first elastic piece 10 drives the vertical pull rod 8 to move upwards, so that the supporting piece 6 is driven to move upwards through the installation bulge, and at the moment, the electronic screen attached to the back plate 3 can be clamped between the upper clamping piece 11 and the lower part of the supporting piece 6 along the length direction.

Referring to fig. 10 as another embodiment of the present invention, the side clamping structure includes a horizontal fixed cylinder 18 horizontally fixed on a surface of the backboard 3 adjacent to the adjusting arm 2, a horizontal pull rod 16 slidably sleeved with the horizontal fixed cylinder 18 and extending out from one end of the horizontal fixed cylinder 18, a transverse driving plate 14 fixed at one end of the horizontal pull rod 16 extending out of the horizontal fixed cylinder 18, and a side engaging member 15 fixed on the transverse driving plate 14;

the section of the horizontal pull rod 16 sleeved in the horizontal fixing cylinder 18 is sleeved with a second elastic part 17, a convex ring is arranged at one end of the horizontal pull rod 16 sleeved in the horizontal fixing cylinder 18, a flange is arranged at one end of the horizontal fixing cylinder 18, through which the horizontal pull rod 16 penetrates out, and two ends of the second elastic part 17 are respectively attached to the convex ring and the flange.

In this embodiment, the lateral driving plate 14 is pulled to move towards the lateral side of the backboard 3 to drive the lateral engaging member 15 and the horizontal pull rod 16 to move along with the horizontal driving plate, and when the horizontal pull rod 16 moves along with the horizontal driving plate, one end of the horizontal pull rod sleeved in the horizontal fixing cylinder 18 approaches to the port of the horizontal fixing cylinder 18 and presses the second elastic member 17;

when the side engaging members 15 on both sides are separated to a width larger than the electronic screen, the transverse driving plates 14 on both sides can automatically drive the side engaging members 15 on both sides to gather together by the elastic force of the second elastic member 17, thereby clamping the electronic screen along the width direction thereof.

Since the vertical clamping structure and the side clamping structure respectively clamp the electronic screen from four directions through the first elastic member 10 and the second elastic member 17, the clamping force is flexible clamping, and compared with rigid clamping, the electronic screen is not scratched or even squeezed;

in addition, this fixture adopts the flexible tight mode of clamp to carry out the centre gripping to the electronic screen of different width and length dimensions, application scope is wide, and along with the increase of electronic screen length and width dimensions, the weight of electronic screen also increases certainly, and the deflection of first elastic component 10 and second elastic component 17 increases along with the increase of the length and the width dimensions of electronic screen when the centre gripping, clamping force increases promptly, prevents that the electronic screen of bigger size from producing clamping force owing to the dead weight is too big not enough, and the unstable phenomenon of centre gripping appears.

As another embodiment of the present invention, please refer to fig. 8, 9 and 10, the side clamping structures are connected to the vertical clamping structures through a synchronizing structure, which is used for driving the transverse driving plates 14 of the two sets of side clamping structures to separate from each other when the supporting member 6 is pulled down;

still further, the synchronous structure comprises an inverted equilateral triangle-shaped strut 12 fixed at the lower part of the mounting boss and a pressing wheel 13 rotatably mounted at one end of the transverse driving plate 14 close to the through groove 7.

In this embodiment, when the supporting member 6 is pulled down, the mounting protrusion is used to drive the spreading member 12 to move down, and when the spreading member 12 moves down to the two waist edges at the bottom thereof to be attached to the squeezing wheels 13 on the transverse driving plates 14 on the two sides, the supporting member 6 can be continuously pulled down to separate the transverse driving plates 14 on the two sides from each other through the spreading member 12, so as to drive the side engaging members 15 on the two sides to separate from each other, thereby achieving the effect of four-way cooperative spreading.

It is described here that, although there is a structure that can be unfolded in four directions in the prior art, for example, a vehicle-mounted mobile phone gravity sensing bracket, it adopts an electric drive to cooperate with a sensor to realize clamping, so that on one hand, the clamping force is limited, on the other hand, the failure rate is extremely high, the service life is not long and is not easy to damage, the maintenance and replacement cost is high, and moreover, the use is very inconvenient because the battery needs to be charged.

In addition, part of the mobile phone support is realized by adopting a parallel contraction arm structure, and the principle is that when the mobile phone is pressed to the bottom support, the internal linkage structure is driven to contract; after the electronic screen is placed on the mobile phone, the lower arm is pressed down under the action of natural gravity to trigger the linkage mechanism, so that the left arm and the right arm automatically clamp the mobile phone inwards. Although a sensor is not needed, the clamping force on the two sides is completely determined by the self weight of the mobile phone, and the clamping force is not large, so that the effect of stable clamping cannot be achieved.

The electronic screen is clamped from four directions by matching the mechanical interlocking mode with the elastic piece, the clamping force is sufficient, power supply is not needed, the mechanical structure is stable, the electronic screen is not easy to damage, and the service life is long.

As another embodiment of the present invention, please refer to fig. 13 to 21, a rear portion of the bottom support 1 is integrally provided with two symmetrical first rotating portion 21 and second rotating portion 22, and the second engaging portion 40 is connected to the first rotating portion 21 and the second rotating portion 22 through a locking mechanism;

the locking mechanism comprises a first locking structure connecting the first rotating part 21 and the second nesting part 40, a second locking structure connecting the second rotating part 22 and the second nesting part 40, and a clutch component arranged in the second locking structure and used for controlling the first locking structure and the second locking structure to be combined and separated.

In this embodiment, when the first locking structure and the second locking structure are in the combined state, the second engaging portion 40 is stably connected to the first rotating portion 21 and the second rotating portion 22, so as to keep the included angle between the adjusting arm 2 and the bottom support 1 stable;

when making first locking structure and second locking structure break away from through clutch assembly, second registrate portion 40 can rotate relative first rotation portion 21 and second rotation portion 22 to adjust the contained angle between adjusting arm 2 and the bottom support piece 1, and then adjust the last fixed electronic screen height of fixture.

As another embodiment of the present invention, please refer to fig. 14, fig. 19 and fig. 20, the first locking structure includes a movable locking element 25 nested in the second nesting portion 40, a retaining sleeve 27 elastically connected to the movable locking element 25 through a third elastic element 29, and a first connecting element 23 connected to the first rotating portion 21 for limiting the axial position of the retaining sleeve 27;

the movable locking piece 25 is in a cylinder shape with one closed end and the other open end, and one circle of first inclined locking teeth are arranged on one side of the closed end of the movable locking piece, which faces the second locking structure, at equal intervals along the circumference; one side of the third elastic element 29 is jointed with the closed end of the movable locking element 25, and the other side is jointed with the end part of the first connecting element 23;

the retaining sleeve 27 is a hollow stepped shaft with two through ends, a third clamping key 36 is arranged on the outer wall of the section with the smaller diameter of the retaining sleeve 27, and a fourth key slot 37 in sliding fit with the third clamping key 36 is formed in the inner wall of the movable locking part 25;

in addition, a second key 35 is arranged on a section of outer wall with a larger diameter on the retaining sleeve 27, and a third key groove 34 matched with the second key 35 is arranged on the inner wall of the first rotating part 21.

Still further, the third key groove 34 is opened from the side of the first rotating portion 21 away from the second rotating portion 22, and does not penetrate through the first rotating portion 21; a fourth keyway 37 opens from the open end of the movable closure member 25 and extends to a position proximate the closed end of the movable closure member 25.

An inner thread is formed on the inner wall of the first rotating portion 21, and an outer thread matched with the inner thread on the inner wall of the first rotating portion 21 is formed on the outer wall of the first connecting piece 23.

When the first rotating part 21 and the second rotating part 22 at the rear part of the bottom support 1 are connected with the second nesting part 40 at the lower end of the adjusting arm 2 through the locking mechanism, the following steps are performed:

a first step of coaxially fitting a second fitting portion 40 between the first rotating portion 21 and the second rotating portion 22;

secondly, the movable locking piece 25 is installed into the second nesting part 40 through the first rotating part 21, the first oblique locking tooth at the closed end of the movable locking piece 25 faces the second rotating part 22, and the fourth key slot 37 and the third key slot 34 are in the same straight line; the third elastic member 29 is inserted into the tubular movable locking member 25 through the first rotating portion 21;

thirdly, the holding sleeve 27 is inserted into the first rotating part 21, and in the process of insertion, the second holding key 35 is clamped into the third key groove 34, so that the third holding key 36 is clamped into the fourth key groove 37; after the retaining sleeve 27 is installed, the first connecting piece 23 and the first rotating part 21 are screwed tightly by using threads, one surface of the first connecting piece 23 facing the movable locking piece 25 is attached to a section of side wall with a larger diameter of the retaining sleeve 27, and the second clamping key 35 reaches the bottom of the third key groove 34; at this time, one side of the third elastic member 29 abuts against the closed end of the movable locking member 25, and the other side abuts against a side of the first connecting member 23 facing the movable locking member 25.

As another embodiment of the present invention, referring to fig. 13, 17 and 18, the second locking structure includes a fixed locking element 26 nested in the second nesting portion 40 and a second connecting element 24 connected to the second rotating portion 22 for limiting the axial position of the fixed locking element 26;

two ends of the fixed locking piece 26 are communicated, and one end of the fixed locking piece facing the movable locking piece 25 is provided with a circle of second oblique locking teeth staggered with the first oblique locking teeth at equal intervals along the circumference; the first oblique locking tooth and the second oblique locking tooth are opposite in inclination direction;

a first key groove 31 is formed in the inner wall of the second rotating portion 22, the first key groove 31 penetrates through the second rotating portion 22, a second key groove 33 is formed in a section, close to the second rotating portion 22, of the inner wall of the second nesting portion 40, a first clamping key 32 is arranged on the outer wall of the fixed locking piece 26, and the second key groove 33 only has a small section and does not penetrate through the second nesting portion 40;

wherein, the center of the second connecting piece 24 is provided with a through hole, the outer wall of the second connecting piece 24 is also provided with an external thread, and the inner wall of the second rotating part 22 is tapped with an internal thread matched with the external thread on the outer wall of the second connecting piece 24.

In the process of connecting the first rotating part 21 and the second rotating part 22 with the second sheathing part 40 through the locking mechanism, after the third step is completed, the installation is continued in the following steps:

fourthly, adjusting an included angle between the adjusting arm 2 and the bottom supporting piece 1 to enable the second key groove 33 to be aligned with the first key groove 31, then enabling the fixed locking piece 26 to penetrate through the second rotating portion 22 to be installed into the second sleeving portion 40, and keeping the first clamping key 32 corresponding to the first key groove 31 and the second key groove 33 in the penetrating process;

fifthly, mounting the second connecting piece 24 on the second rotating part 22 through a thread pair, enabling the end part of the second connecting piece 24 to abut against the surface without the oblique locking teeth of the fixed locking piece 26, and clamping the first clamping key 32 at the bottom of the second key groove 33; during the process of continuously screwing the second connector 24 into the second rotating part 22 through the thread pair, the second connector 24 continuously pushes the fixed locking element 26 to approach the movable locking element 25 in the second sleeving part 40; after the second oblique locking tooth on the fixed locking piece 26 is engaged with the first oblique locking tooth on the movable locking piece 25, the second connecting piece 24 is continuously rotated to enable the movable locking piece 25 in the second sleeving part 40 to continuously move towards the first rotating part 21, the movable locking piece 25 approaches to the retaining sleeve 27 through the restraining action of the fourth key groove 37 and the third clamping key 36 in the moving process, and the third elastic piece 29 is compressed between the first connecting piece 23 and the closed end of the movable locking piece 25.

The clutch component comprises an unlocking rod 28 movably connected with the second connecting piece 24, the unlocking rod 28 penetrates through the through hole and the fixed locking piece 26, a groove is formed in one end, facing the movable locking piece 25, of the unlocking rod 28, a ball 30 is movably embedded in the groove, and the ball 30 is attached to one surface, facing the second connecting piece 24, of the closed end of the movable locking piece 25;

referring to fig. 15 and 16, a section of the unlocking lever 28 close to the second rotating portion 22 is provided with a round cap, the inner wall of the second connecting member 24 is provided with a sliding cavity with a length greater than that of the round cap, the round cap and the sliding cavity are in clearance fit, and the section of the groove is in a major arc shape, so that the ball 30 cannot be separated from the groove, and the unlocking lever 28 cannot be separated from the second connecting member 24 under the action of the round cap and the sliding cavity;

because the round cap is in clearance fit with the sliding cavity, the unlocking rod 28 can rotate relative to the second connecting piece 24 and can move relative to the second connecting piece 24 along the axial direction.

After the first rotating part 21 and the second rotating part 22 are connected with the second sheathing part 40 through the locking mechanism, under the condition of no external force, the first inclined locking teeth on the movable locking part 25 are always combined with the second inclined locking teeth on the fixed locking part 26 under the action of the third elastic part 29;

at this time, because the second latch 35 is latched in the third key slot 34, the retaining sleeve 27 cannot rotate relative to the first rotating portion 21, and the movable locking piece 25 cannot rotate relative to the retaining sleeve 27 under the action of the third latch 36 and the fourth key slot 37, i.e. the first rotating portion 21, the retaining sleeve 27 and the movable locking piece 25 are always kept non-rotating;

because the first oblique locking tooth and the second oblique locking tooth are always combined, the fixed locking piece 26 can not drive the first clamping key 32 to rotate towards the direction close to the bottom support piece 1, and the first clamping key 32 is embedded in the second key groove 33, namely, the adjusting arm 2 can not turn towards the direction close to the bottom support piece 1; under the gravity of the electronic screen and the clamping mechanism, only a fixed angle between the adjusting arm 2 and the bottom support 1 can be maintained.

Of course, if the gravity of the adjusting arm 2, the electronic screen and the clamping mechanism is overcome under the action of external force, the adjusting arm 2 can be driven to turn towards the direction far away from the bottom supporting member 1.

It is noted that the angle between the adjusting arm 2 and the bottom support 1 should not exceed 90 deg. for three reasons:

firstly, the purpose of adjusting the included angle between the adjusting arm 2 and the bottom supporting piece 1 is to adjust the height of the electronic screen, theoretically, when the included angle between the adjusting arm 2 and the bottom supporting piece 1 is 90 degrees, the electronic screen reaches the maximum height, and when the included angle is 0 degree, the electronic screen reaches the minimum height, so that the height adjusting function of the whole interval can be achieved by adjusting between 0 to 90 degrees;

secondly, when the included angle between the adjusting arm 2 and the bottom supporting member 1 exceeds 90 degrees, the adjusting arm 2 is driven to deflect towards the direction far away from the bottom supporting member 1 under the action of the gravity of the electronic screen and the clamping mechanism, at the moment, the acting force between the first oblique locking tooth and the second oblique locking tooth drives the retaining sleeve 27 to move towards the direction close to the first rotating part 21 to further extrude the third elastic member 29, and if the third elastic member 29 is further extruded, the locking function between the first oblique locking tooth and the second oblique locking tooth is lost;

thirdly, even if the included angle between adjusting arm 2 and bottom support piece 1 exceeds 90 and still has the locking function between a back oblique locking tooth and No. two oblique locking teeth, but the focus of whole lamps and lanterns has arrived bottom support piece 1's rear partially this moment, also can drive whole light filling lamp turnover under electronic screen and fixture's action of gravity.

Thus, the angle between the adjustment arm 2 and the bottom support 1 should not exceed 90 °.

In normal use, if the included angle between the adjusting arm 2 and the bottom support 1 is to be reduced to reduce the height of the electronic screen, the unlocking rod 28 can be pressed to protrude from one end of the second connecting piece 24, so that the round cap slides in the sliding cavity, the unlocking rod 28 pushes the movable locking piece 25 to approach the retaining sleeve 27 by using the ball 30 at the end of the unlocking rod, and thus the first oblique locking tooth and the second oblique locking tooth are separated (as shown in fig. 21), at this time, the adjusting arm 2 can be turned downwards, and the included angle between the adjusting arm 2 and the bottom support 1 is reduced to reduce the height of the electronic screen.

In the process of downwards turning over the adjusting arm 2, the friction type between the movable locking piece 25 and the unlocking rod 28 can be changed into rolling friction due to the arrangement of the balls 30, and therefore compared with the process of directly abutting the end portion of the unlocking rod 28 against the closed end of the movable locking piece 25, the friction force is smaller, in the process of turning over the adjusting arm 2 under the height of an adjusting electronic screen, the fact that the fixed locking piece 26 rotates along with the adjusting arm 2 can be achieved, when the movable locking piece 25 and the first rotating portion 21 keep synchronous and do not rotate, if the unlocking rod 28 rotates along with the fixed locking piece 26, the friction of the closed end faces of the unlocking rod 28 and the movable locking piece 25 can be reduced.

When normally using, if want to increase the contained angle between regulating arm 2 and the bottom support piece 1 in order to improve the height of electronic screen, only need upwards overturn regulating arm 2 can.

When not using this light filling lamp, please compare fig. 1, can be close to with the clockwise upset of fixture to backplate 3 and regulating arm 2, then at anticlockwise upset regulating arm 2, make regulating arm 2 and bottom support piece 1 be close to, at this moment, the first registrate portion 38 on regulating arm 2 upper portion can block into the sulcus 41 of seting up on bottom support piece 1, makes whole light filling lamp structure occupation space not.

It will be evident that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims (2)

1. The utility model provides a take electronic screen light filling lamp of adjustable support which characterized in that includes:

a bottom support (1);

the adjusting mechanism comprises an adjusting arm (2), wherein one end of the adjusting arm (2) is provided with a second sleeving part (40), and the second sleeving part (40) is in rotating fit with a locking mechanism at the rear part of the bottom supporting piece (1);

the clamping mechanism is used for elastically clamping the electronic screen from the upper direction, the lower direction, the left direction and the right direction;

the lighting structure (4) is arranged at the top of the clamping mechanism, one end of the lighting structure (4) protrudes out of the clamping mechanism, and the lighting structure is used for diverging light beams from the top of the clamping mechanism towards the direction of the electronic screen to supplement light for the electronic screen;

wherein the lighting structure (4) comprises:

the shell (404), one end of the shell (404) is protruded out of the top of the clamping mechanism and is detachably arranged on the top of the clamping mechanism;

the LED lamp bead (401) is arranged in the shell (404) and fixed with the inner wall of the shell (404) through a light blocking piece (403), and the LED lamp bead (401) is used for emitting a point-shaped direct light beam towards one end, protruding out of the clamping mechanism, of the shell (404);

the semi-transparent diffusion film (402) is arranged along the light-emitting direction of the LED lamp beads (401) in an arc shape and covers the light-emitting surface of the LED lamp beads (401);

the light outlet (406) is arranged at the lower part of the section of the shell (404) protruding out of the clamping mechanism, and an antireflection part (408) is arranged at one side of the light outlet (406) far away from the clamping mechanism;

a layer of light absorption coating (405) is arranged in a section of the shell (404) protruding out of the clamping mechanism, and a triangular restraining part (411) integrally formed with the inner wall of the shell (404) is arranged at the upper part of the semitransparent diffusion film (402);

the fixture includes:

the top of the back plate (3) is fixedly provided with a top box perpendicular to the back plate (3), the top box is provided with a slot detachably connected with the shell (404), one side of the lower part of the back plate (3) close to the adjusting arm (2) is integrally provided with a first sleeving part (38), and the first sleeving part (38) is fixedly in interference fit with the rotating shaft (20);

the vertical clamping structure is arranged on one surface of the back plate (3) departing from the adjusting arm (2) and is used for elastically clamping the electronic screen from the top and the bottom of the electronic screen along the length direction of the electronic screen;

the two groups of side clamping structures are symmetrically arranged on two sides of the back plate (3) and are used for elastically clamping the electronic screen from two sides along the width direction of the electronic screen;

the vertical clamping structure includes:

the upper clamping piece (11) is bent from top to bottom, and the upper end of the upper clamping piece (11) is fixed to the upper portion of one surface, away from the adjusting arm (2), of the back plate (3);

the supporting piece (6) is movably connected with the back plate (3) along the length direction of the back plate (3); a movable cavity (5) is formed in the back plate (3) along the length direction of the back plate, the movable cavity (5) penetrates through the bottom of the back plate (3), and the upper part of the supporting piece (6) is in sliding fit with the movable cavity (5);

the vertical elastic component is arranged on one surface of the back plate (3) close to the adjusting arm (2) and is connected with the supporting piece (6);

the lower part of the supporting piece (6) is bent from bottom to top, a through groove (7) is formed in one surface, close to the adjusting arm (2), of the back plate (3), and the vertical elastic assembly is connected with the supporting piece (6) through the through groove (7);

the vertical elastic assembly includes:

the mounting protrusion penetrates through the through groove (7) and is fixed on one surface, close to the adjusting arm (2), of the supporting piece (6);

one end of the vertical pull rod (8) is fixed with the mounting protrusion, and the vertical pull rod (8) is arranged along the length direction of the back plate (3);

the vertical fixing cylinder (9), the vertical fixing cylinder (9) is fixed at the lower part of the top box and is sleeved with the upper section part of the vertical pull rod (8) in a sliding way;

the first elastic piece (10), the first elastic piece (10) is used for elastically connecting the vertical pull rod (8) and the vertical fixed cylinder (9);

the side clamping structure includes:

the horizontal fixing cylinder (18), the horizontal fixing cylinder (18) is horizontally fixed on one surface of the back plate (3) close to the adjusting arm (2);

the horizontal pull rod (16) is sleeved with the horizontal fixing cylinder (18) in a sliding mode and penetrates out of one end of the horizontal fixing cylinder (18);

the transverse driving plate (14), the transverse driving plate (14) and the horizontal pull rod (16) penetrate out of one end of the horizontal fixed cylinder (18) to be fixed;

the side clamping piece (15), the side clamping piece (15) is fixed on the transverse driving plate (14);

a section of the horizontal pull rod (16) sleeved in the horizontal fixed cylinder (18) is sleeved with a second elastic piece (17), and the second elastic piece (17) is used for elastically connecting the horizontal pull rod (16) and the horizontal fixed cylinder (18);

the side clamping structures are connected with the vertical clamping structures through synchronous structures, and the synchronous structures drive the transverse driving plates (14) in the two groups of side clamping structures to be separated from each other when the bearing piece (6) is pulled downwards;

the synchronous structure comprises an inverted equilateral triangle-shaped strutting piece (12) fixed at the lower part of the mounting protrusion and an extrusion wheel (13) rotatably mounted at one end of the transverse driving plate (14) close to the through groove (7) and used for being in rolling fit with the bottom of the strutting piece (12);

the rear part of the bottom supporting piece (1) is integrally provided with a first rotating part (21) and a second rotating part (22) which are symmetrical, and the second sheathing part (40) is respectively connected with the first rotating part (21) and the second rotating part (22) through a locking mechanism;

the locking mechanism comprises a first locking structure connecting the first rotating part (21) and the second sleeving part (40), a second locking structure connecting the second rotating part (22) and the second sleeving part (40), and a clutch component arranged in the second locking structure and used for controlling the first locking structure and the second locking structure to be combined and separated;

the first locking structure comprises a movable locking piece (25) sleeved in the second sleeving part (40), a retaining sleeve (27) elastically connected with the movable locking piece (25) through a third elastic piece (29), and a first connecting piece (23) connected with the first rotating part (21) and used for limiting the axial position of the retaining sleeve (27);

the movable locking piece (25) is in a cylindrical shape with one closed end and the other end provided with an opening, and one circle of first inclined locking teeth are arranged on one side, facing the second locking structure, of the closed end of the movable locking piece at equal intervals along the circumference; one side of the third elastic piece (29) is attached to the closed end of the movable locking piece (25), and the other side of the third elastic piece is attached to the end part of the first connecting piece (23);

the retaining sleeve (27) is a hollow stepped shaft with two through ends, a section of outer wall with a smaller diameter on the retaining sleeve (27) is provided with a third snap key (36), and the inner wall of the movable locking piece (25) is provided with a fourth key groove (37) in sliding fit with the third snap key (36);

a second clamping key (35) is arranged on the section of outer wall with larger diameter on the retaining sleeve (27), and a third key groove (34) matched with the second clamping key (35) is formed in the inner wall of the first rotating part (21);

the second locking structure comprises a fixed locking piece (26) sleeved in the second sleeving part (40) and a second connecting piece (24) connected with the second rotating part (22) and used for limiting the axial position of the fixed locking piece (26); a through hole is formed in the center of the second connecting piece (24);

two ends of the fixed locking piece (26) are communicated, and one end of the fixed locking piece facing the movable locking piece (25) is provided with a circle of second inclined locking teeth staggered with the first inclined locking teeth at equal intervals along the circumference; the first oblique locking tooth and the second oblique locking tooth are opposite in inclination direction;

seted up keyway (31) on second rotation portion (22) inner wall, keyway (31) run through second rotation portion (22), just second registrate portion (40) inner wall has seted up keyway (33) on being close to second rotation portion (22) one section, is provided with card key (32) on the outer wall of fixed closure (26).

2. The light supplement lamp with the adjustable bracket for the electronic screen according to claim 1, wherein the clutch assembly comprises an unlocking rod (28) movably connected with the second connecting member (24), the unlocking rod (28) penetrates through the through hole and the fixed locking member (26), a groove is formed in one end, facing the movable locking member (25), of the unlocking rod (28), a ball (30) is movably embedded in the groove, and the ball (30) is attached to one surface, facing the second connecting member (24), of the closed end of the movable locking member (25);

a section of the unlocking rod (28) close to the second rotating part (22) is provided with a round cap, the inner wall of the second connecting piece (24) is provided with a sliding cavity with the length being larger than that of the round cap, and the round cap is in clearance fit with the sliding cavity.

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