48results about How to "Adjust the projection angle" patented technology

Provided is an image display apparatus that has: a case distinguished into a plurality of regions and has a projection port; an image display apparatus main body that projects an image from the projection port; and a controller that electrically connects to the image display apparatus main body and to an external electronic device, and is positioned so as to straddle on the plurality of regions. The case has: a first region that houses a first portion of the controller and is held by the electronic device at least at one portion of the region; a second region positioned away from the electronic device so as to sandwich the first region and houses the image display apparatus main body; and a third region positioned away from the projection port and away from the electronic device so as to sandwich the first region, and houses a second portion of the controller. Therefore, the image display apparatus can be made compact to be installed within an electronic device.

The invention discloses a multifunctional teaching display device for mathematics teaching. The device comprises a support base and a driving box. A bottom of the support base is fixedly equipped withmoving wheels, and a top of the supporting base is provided with a drawer frame. A top of the drawer frame is fixedly equipped with the driving box, a top of the driving box is fixedly connected to afirst support rod, a top of the first support rod is fixedly connected to the bottom of a support plate, a top of the support plate is fixedly connected to a bottom of a first display board through asecond support rod, and the top of the first display board is provided with a support top plate. The structure design of the multifunctional teaching display device is reasonable, by setting a sliding groove in a hollow cavity of the first display board, the second display board is slidingly installed in the sliding groove, if the use of the second display board is needed, the second display board is pulled out of the hollow cavity of the first display board, when the second display board is not used, the second display board is received in the hollow cavity of the first display board, and the use area of the display boards is flexibly increased.

The invention discloses an LED mosquito repelling floodlight, which comprises a LED floodlight lamp body and a base, and is characterized in that: the LED floodlight lamp body and the base are connected through an adjustable bracket, and the adjustable bracket is composed of " U”-shaped fixed bracket and a support column, the upper end of the support column is rotatably connected to the bottom of the “U”-shaped fixed bracket, the lower end of the support column is connected to the base, and the side of the “U”-shaped fixed bracket is provided with a liquid tank. The lamp body is provided with cooling fins arranged around the lamp body. The invention is mainly used for projection lighting, has a simple structure, can adjust the projection angle and direction of the LED projection lamp, and can disperse mosquitoes.

An illumination-improving structure for LED or SMD LED lights is to mount a lamp base at a light head. The lamp base is funnel-shaped and has an interior annular cutout near its top edge. A substrate engages the annular cutout to carry one or multiple LED or SMD LED units at a center or other proper locations. Moreover, a rim is formed on the substrate to surround the LED or SMD LED units. The lamp base further has a light-adjusting lens mounted over the LED or SMD LED units. The light-adjusting lens has an outer convex arc performing a plane with edge surface and has an inner concave arc or an inner planar surface. The plane and the outer convex arc are connected in form of sharp angle attachment. The inner concave arc or the inner planar surface are treated with foggy treatment or coated with foggy paper.

The invention discloses a gear tooth surface shot peening device and method. The gear tooth surface shot peening device comprises two spraying nozzle fixing rods arranged side by side, each spraying nozzle fixing rod is provided with at least two spraying nozzles, the orientations of the spraying nozzles installed on the two spraying nozzle fixing rods are in an intersecting state, and a spraying nozzle distance adjustment device is arranged between the two spraying nozzle fixing rods. The gear tooth surface shot peening method comprises the steps that two bundles of projectiles are shot to a gear tooth from two sides of the gear tooth of a gear in an intersecting mode, the projectiles are shot at an angle delta relative to the top of the gear, and the angle delta ranges from 20 to 80 degrees. At the time, one bundle of projectiles are shot at an angle theta relative to one side of the gear tooth and the pitch circle position of the gear tooth, and the other bundle of projectiles are shot at an angle theta relative to the other side of the gear tooth and the pitch circle position of the gear tooth. The gear tooth surface shot peening device and method can improve surface residual press stress of the pitch circle position of the gear, shorten shot peening time and prevent micro protrusions from being generated on the outer side of the top of the gear tooth.

The invention relates to a flood lamp for short distance projection in a large-area projection place, in particularly to a flood lamp capable of adjusting projection angles. The flood lamp comprises at least two lamp units, each of which comprises a light reflection device and one or two lamps, the lamp units are arranged on an outer frame, the lamps are connected with the outer frame in a rotatable manner, and the outer frame is arranged on a bracket and connected with the bracket in a rotatable manner. In addition, the number of the lamp units in normally 2-4, the light reflection device has a shape for asymmetric projection, the lamp units are vertically or transversely arranged on the outer frame. The inventive flood lamp can conveniently adjust the projection angles of the lamp units, and one such flood lamp can satisfy the requirements on lighting toward multiple directions or in a place with different directions at the same time. In addition, by using the light reflection device with the shape for asymmetric projection, the lamp can realize uniform lighting in a position with a closer distance to an object to be lighted.

The embodiment of the invention discloses augmented reality equipment. The equipment comprises a light machine, an adjusting assembly and a shell; the adjusting assembly is arranged inside the shell,and the adjusting assembly comprises a rotating assembly, a swinging assembly and a translating assembly which are connected end to end in sequence; a part of the light machine extends into the shelland is connected to the adjusting assembly, and the light machine can respectively achieve rotation, swinging and translation relative to the shell through the rotating assembly, the swinging assemblyand the translating assembly; an opening is formed in the shell in the swinging direction of the light machine. According to the equipment, the three-degree-of-freedom adjustment of the light machinecan be achieved through the adjusting assembly, and the light machine can be adjusted to a suitable wearing position simply and conveniently to adapt to the wearing requirements of different users.

The invention discloses an intelligent night auxiliary safe illuminance lamp based on mesh projection and a control method for the same. The lamp comprises a laser emitter, a light signal collection device, a control device and a safe reminding device, wherein the laser emitter is used to project uniform meshes to the place in front of the driving direction; the light signal collection device receives light signals of the meshes and transforms the signals into varying image signals of the meshes, and the device also receives light ray signals sent to a drying vehicle and transmits the varying image signals and the light ray signals to the control device; the control device processes the varying image signals and the light ray signals and outputs control signals to the safe reminding device and the laser emitter; the safe reminding device reminds a driver of front road condition information according to the control signals; and the laser emitter adjusts light source power according to the control signals. According to the invention, the original idea of assigning the whole night illuminance task to an automobile headlight is changed; road conditions and the environmental recognition rate in night driving could be increased greatly; visual fatigue of the driver is relieved; and distinguishing efficiency is increased.

The invention belongs to the field of projection equipment, and more specifically relates to a multifunctional projector support comprising a pedestal, a first connecting rod, a second connecting rod and a bracket. The pedestal is connected to the lower end of the first connecting rod. The upper end of the first connecting rod is connected with the lower end of the second connecting rod, and the upper end of the second connecting rod is connected with the bottom portion of the bracket. The multifunctional projector support is characterized in that a power supply module is installed in the pedestal; a loudspeaker and a wired microphone are arranged on the outside of the bracket; the wired microphone transmits a sound signal to a loudspeaker output terminal; the microphone and the loudspeaker are separately connected with the power supply module; the power supply module output terminal is connected to a 220v AC power supply; and the output terminal supplies electric power to the wired microphone and the loudspeaker. According to the invention, the height and the shooting angle of the mobile projector can be adjusted; the structure is simple, and heat radiation is realized; the microphone and the loudspeaker are integrated; and conference lecture and displaying are provided with convenience.

The invention discloses a robot projector and an education robot thereof. The robot projector comprises a support base; a third motor is mounted at the top of a lifting terrace; a second motor is mounted on the left wall of a pallet frame; an output shaft of the second motor is connected with a first stainless steel screw extended into the pallet frame; a mechanical arm is welded to the right wallof a moving workbench; an education projector is mounted at the bottom of the right end of the mechanical arm. The robot projector and the education robot thereof have the advantages that the secondmotor is started to drive the first stainless steel screw to rotate, the moving workbench can move side to side, and the left-right projection distance of the education projector can be changed; the third motor is started to drive a first transmission pulley to rotate, the rotation of a second transmission pulley can drive a second stainless steel screw to rotate, a moving platform connected withthe second stainless steel screw in threaded manner can move back and forth, and a front-rear projection distance of the education projector can be changed.

The invention discloses a mounting base for an ultra-short-focus laser projector. The mounting base comprises an adjusting plate, a fixing plate, an ultra-short-focus laser projector body, a servo motor, a mounting plate, push rod motors, fixing blocks, telescopic springs, adjusting blocks, stop blocks, baffle, limiting springs, connecting rods, a connecting block, a sliding block and a threaded rod, wherein a placing groove is formed in the top of the adjusting plate, the fixing plate is arranged in the placing groove, and the fixing plate is slidably connected with the placing groove. According to the mounting base, through the arrangement of the limiting springs, limiting blocks move in limiting grooves and adjusting grooves, the limiting blocks extrude the adjusting blocks, the telescopic springs generate a reverse elastic force, the adjusting blocks push the limiting blocks in the changing position, the limiting blocks are released between the limiting blocks and the adjusting grooves, and the limiting blocks between the fixing plate and the adjusting plate are released according to the same principle. The structure is simple, the operation is convenient, the projector can bequickly installed and disassembled, the time is saved, and the working efficiency is improved.

The invention belongs to the technical field of electronic products, and especially relates to a multifunctional projection device. The device comprises a projection light machine and a housing. An outer side wall of the housing is provided with a loudspeaker which is rotatingly connected with the outer side wall of the housing and electrically connected with the projection light machine. The interior of a cavity formed by the enclosing of the housing is provided with a transmission shaft which is fixedly connected with the loudspeaker and the projection light machine. An adjustment device which is used for adjusting a projection angle is disposed between the transmission shaft and the housing. A side wall, opposite to a lens of the projection light machine, of the housing is provided with a window, and the window is provided with a detachable projection screen. When the device is in use, an image can be projected on the projection screen, and also the projection screen can be opened to enable the image to be projected on a wall, thereby solving a problem that the number of projection mode is very small. The device can provide different projection modes according to the different needs of a user. In use, the loudspeaker can be rotated to drive the projection light machine fixedly connected with the transmission shaft to rotate, thereby achieving the purpose of adjusting the projection angle.

The invention discloses a vehicle-mounted foldable ceiling projector which comprises a storage box. A storage cavity is formed in the storage box, rotating columns are rotatably arranged on brackets on front and back walls of the storage cavity, a rotating block is fixedly arranged on the cylindrical surface of each rotating column, a projector is fixedly arranged at the left end of the rotating block, turnover rods located on the left side of the rotating column are symmetrically and fixedly arranged at the front and back ends of the projector, and pushing devices are symmetrically arranged on the front and back sides of the storage cavity. By protecting the projector in a sealed space and isolating the projector from in-vehicle temperature to a certain extent, when the projector is used,the angle of the projector can be adjusted, so that a user selects a comfortable watching angle independently. The projector is provided with a cooling device. When the projector is used for a relatively long time to heat or the projector is heated as the in-vehicle temperature is too high, the cooling device can be started to cool, so that the service life of the projector is prolonged. The projector can be moved and placed randomly without affecting in-vehicle space.

The invention discloses an automatically-controlled intelligent display device for real estate marketing in the technical field of real estate sales. The automatically-controlled intelligent display device comprises a mounting base, a display stand, a display, a top camera, a motor III, a telescopic cylinder II and a rotary table, a driving mechanism is mounted on the surface of the mounting base, and the display stand is mounted on the driving mechanism; a sliding rail is fixedly connected to the surface of the display stand, and a screen projection shooting device is installed on the surface of the sliding rail. Through the composition of the device structure, detail parts on a building model can be amplified, and shooting and screen projection can be carried out from multiple angles of the building model, so that customers can watch views in all directions of a building without moving, the completeness of obtained information is improved, the orientation, height and angle of the device can be adjusted, sales personnel can conveniently display and explain, and the sales efficiency is improved.

The invention relates to the technical field of digital accessories, and discloses a projector for film-and-television planning work showing. The projector comprises a projector body, movable rotatingshafts are fixedly installed at the top of the projector body, the eight movable rotating shafts are averagely divided into four groups, the four groups of movable rotating shafts are evenly arrangedat the top of the projector body, and are movably sleeved with fixing pieces, and the fixing pieces movably sleeve connecting plates. According to the projector for film-and-television planning workshowing, the fixing pieces are connected on the projector body through the movable rotating shafts, positioning rods act on grooves, and therefore the two fixing pieces are mutually connected; the connecting plates are connected with the fixing pieces, the projector body is fixed on fixed rods, and a threaded rod is connected with the fixed rod and a fixed pipe in cooperation with a connecting sleeve; a rack is engaged with the threaded rod, the distance between the fixed rod and the fixed pipe is adjusted accordingly, and the effects of conveniently adjusting, disassembling and adjusting theheight are achieved.

The invention discloses a clip-type LED projection lamp, which includes a lamp body and a base of the LED projection lamp, and is characterized in that: the lamp body of the LED projection lamp is connected to the base through an adjustable "U"-shaped bracket, and the The base is composed of a fixed upper plate, a fixed lower plate and a connecting portion, and the fixed upper plate and the fixed lower plate are connected through the connecting portion to form a semi-enclosed frame base. The invention is mainly used for projection lighting, has a simple structure, can adjust the projection angle of the LED projection lamp, and is especially suitable for clamping and fixing on a plate-shaped protrusion.

The invention relates to the technical field of air conditioners, specifically to an air outlet direction indicating method and device of an air conditioner, the air conditioner and a computer readable storage medium. The air outlet direction indicating method of the air conditioner comprises the steps of receiving a linked control command of the air conditioner, wherein the linked control commandrepresents synchronous control of a projection direction of a laser projection module mounted on the air conditioner and an air outlet direction of the air conditioner. When an adjusting command is received, the projection direction of the laser projection module and the air outlet direction of the air conditioner are synchronously adjusted according to the linked control command to rotate for anadjusting angle according to an adjusting direction; and therefore, the air outlet direction of the air conditioner can be indicated through the projection direction so that the user experience is improved.

The invention relates to the technical field of projectors, and discloses a projector capable of freely adjusting an angle. The projector comprises a box body, an adjusting shaft is movably connected to the rear side in the box body, the left end of the adjusting shaft is in threaded connection with an adjusting knob outside the box body, and the left end of the adjusting shaft is fixedly connected with a second-level adjusting display structure on the right side of the adjusting knob. The left end of the adjusting shaft is fixedly connected with a third-level adjusting display structure on the right side of the second-level adjusting display structure, a first-level adjusting gear is fixedly installed in the middle of the adjusting shaft, a second-level adjusting gear is fixedly installed in the middle of the adjusting shaft on the left side of the first-level adjusting gear, and a third-level adjusting gear is fixedly installed in the middle of the adjusting shaft on the right side of the first-level adjusting gear. According to the projector capable of freely adjusting the angle, the adjusting knob is rotated to drive the adjusting shaft to rotate, then the adjusting gear is driven to rotate, the adjusting gear drives a fixing gear to rotate and drives a rack to move, the rack drives a third hinge base to move, the third hinge base jacks up the front end of an installation base, and angle adjustment of the projector is achieved.

The invention discloses AI education projection equipment for a smart education campus, relates to the technical field of smart education, and solves the problems that currently used projection equipment is large in size and inconvenient if being applied to classrooms, and general projection is mainly performed through a projector and a curtain. The AI education projection equipment for the smarteducation campus comprises a mounting plate, vertical frame structures are arranged on the two sides of the mounting plate, and lead screws are rotationally arranged on the inner sides and the outer sides of vertical frames through bearings; upper connecting rods are rotationally arranged at the tops of the inner sides of the mounting plate vertical frames through rotating shafts; lower connectingrods are rotationally arranged at the bottoms of the upper connecting rods through connecting shafts; by arrangement of a beveled edge blackboard and a beveled edge curtain, dual functions are provided for projection equipment, the beveled edge blackboard and the beveled edge curtain can be used as blackboards for teaching during normal use, the positions of the beveled edge blackboard and the beveled edge curtain can be converted, convenience is provided for projection, meanwhile, the size is normal, occupied space is small, transportation is convenient, and mass production and marketing canbe achieved.

The invention discloses teaching equipment for music teaching. The teaching equipment for music teaching comprises a base; a first sleeve is arranged at one side of the top of the base; a cylinder ismounted in an inner cavity of the first sleeve; the output end of the cylinder is sequentially connected with a connection shaft, a connection plate, a supporting rod, a movement block and a projection curtain; a telescopic rod is arranged on the outer wall of the projection curtain; a second sleeve is arranged at the top of the base; a lower rotation plate, an upper rotation plate and a sliding ball are arranged in an inner cavity of the second sleeve; and the top of the upper rotation plate is sequentially connected with a rotation rod, a bottom plate, a supporting plate, a top plate, a fixed rod, a connection band, a fixed band and a magic tape. According to the teaching equipment for music teaching, the projection curtain can be subjected to lifting regulation of a height and meanwhile, a projection angle of the projection curtain can be regulated, so that students can observe projected contents more clearly, a teaching effect is obviously improved, and teaching instruments can besubjected to multidirectional displayed; meanwhile, the instruments can be fixed so as to prevent falling of the instruments; and the teaching equipment for music teaching is simple to use and high inpracticality.

The embodiment of the invention provides a display panel, device and method, an electrowetting microcavity unit and a light control substrate. The electrowetting microcavity unit comprises an electrowetting cavity and electrowetting liquid, wherein the electrowetting cavity is provided with a peripheral surface, a first light-transmitting bottom surface and a second light-transmitting bottom surface; the first light-transmitting bottom surface and the second light-transmitting bottom surface are used for packaging the two ends of the peripheral surface respectively; a partial space in the electrowetting cavity is filled with the electrowetting liquid; any two adjacent surfaces of the peripheral surface, the first light-transmitting bottom surface and the second light-transmitting bottom surface are insulated, at least two surfaces are provided with electrodes, and the electrode of at least one surface is a grounding electrode. According to the embodiment of the invention, light passesthrough the electrowetting liquid, and the angle of the incident surface and / or the emergent surface of the electrowetting liquid can be adjusted by controlling the electric field, so that the light is projected to different directions, binocular parallax is formed, and three-dimensional image display is realized; and moreover, light is not shielded, and the light utilization rate is high.

The invention discloses an LED projection lamp with an adjustable projection angle. The LED projection lamp comprises a shell with an opening formed in one side; an LED lamp arranged in the lengthening direction of the shell is mounted in the shell, and a over plate is fixedly connected with the opening of the shell in a sleeving mode; a storing groove arranged in the lengthening direction of theshell is formed in the side, away from the cover plate, of the shell, and a rotating shaft arranged in the lengthening direction of the storing groove is movably connected with the interior of the storing groove in a sleeving mode; an adjusting sleeve ring is fixedly connected with the outer ring of the rotating shaft in a sleeving mode; and a protective cover fixedly connected with the shell is mounted in the opening of the storing groove, two channels arranged in the lengthening direction of the protective cover are arranged on the side, away from the shell, of the protective cover, and thetwo channels are arranged along the protective cover symmetrically, and a fixed rod arranged in the lengthening direction of the channels is fixedly connected with the position between the inner sidewalls of the two sides of the two channels in a sleeving mode. The LED projection lamp is simple in structure and quick and convenient to operate, on the one hand, the position used for arranging thefixed plate on the projection corner can be adjusted, and the LED projection lamp is suitable for installation and fixation of different occasions; and on the other hand, the projection angle of the projection corner can be adjusted.

The invention discloses a multimedia projection device used for electronic commerce situational teaching. The multimedia projection device used for electronic commerce situational teaching comprises aprojector body, an angle adjusting structure, a height adjusting structure and a controller used for controlling the angle adjusting structure to adjust the angle of the projector body, wherein the angle adjusting structure comprises a supporting box and two driving parts, and each driving part comprises a driving motor, a first gear and a second gear; and the height adjusting structure comprisesa base, a guide structure and sliding supporting structures, the upper end face of the base is provided with two slideways which are located on two sides of the guide structure, and the sliding supporting structures comprise supporting rods and rollers. According to the multimedia projection device used for electronic commerce situational teaching, the height and angle of a projection lens can beadjusted, adjustment of the projection position is achieved, and projection integrity is guaranteed.

The invention provides an LED lamp profile suite with the advantages of excellent sealing performance, easy maintenance and installation, and good heat dissipation effect, and belongs to the field oflighting fixtures, and the LED lamp profile suite is applicable for various outdoor large and medium-sized projection lamps. The LED lamp profile suite comprises an LED radiator and a base connectingplate; the LED radiator with an H-shaped section is provided with a light source tank and an electrical tank, and the symmetrical positions, close to the tail ends, of the two side walls of the lightsource tank protrude inwards separately, so that a first boss used for gluing sealing glass is formed; the glued surface of the sealing glass of the first boss is recessed toward a cross beam plate, so that a groove is formed. The tail ends of the two side walls of the electrical tank are provided with guide grooves with T-shaped sections separately; one side of the base connecting plate is provided with two guide rails which are provided with T-shaped sections and matched with the guide grooves, and the base connecting plate is provided with screw holes for the guide rails to run through; thecenter of the other side of the base connecting plate is provided with a circular groove in parallel with the guide rails, and the base connecting plate is matched and connected with the LED radiatorthrough the guide rails and the guide grooves; and the lamp profile suite is further provided with an arc-shaped baffle.

The invention discloses an integrated high-power LED lamp, which comprises a circular radiator, an LED light-emitting module, a first heat pipe, an annular radiator, an inner shell, a water cooling assembly, a support ring, an outer shell, a gland, a lens cover, The fan, the adjustment seat, the bracket, the adjustment pin, and the LED light-emitting module generate a lot of heat when they emit light, and the heat is directly transferred to the circular radiator, part of the heat is transferred to the annular radiator through the first heat pipe, and the other part is transferred to the water-cooling component, and the fan works , the cold air enters the inner casing through the first ventilation hole and the second ventilation hole, thereby forcibly cooling the annular radiator and the water cooling assembly. The device has a simple structure, and through the combination of water cooling and air cooling, it can quickly cool down the temperature of the LED light-emitting module, so that it can operate normally and stably, and improve the service life. At the same time, the light projection angle can be adjusted to meet different working conditions.

The invention discloses a side-hung type project lamp which comprises a lamp housing. A lamp body is arranged in the lamp housing. A lamp housing surface cover is buckled to the lamp housing in a covering manner. A lamp body hanger is arranged on the lamp housing. The lamp body comprises a light source assembly. The light source assembly is sequentially provided with a lens assembly, a pressing plate and glass. A waterproof rubber gasket is arranged between the glass and the lamp housing surface cover. Seat type mounting bases and a hanging type mounting base are annularly arranged on the outer surface of the lamp housing. The number of the seat type mounting bases is two. The portion, between the two seat type mounting bases, of the lamp housing is provided with the hanging type mounting base. The lamp body hanger is fixedly arranged on the hanging type mounting base. The lamp body hanger is mounted on the lamp housing in a side-hung manner. The lamp body hanger arranged in the side-hung manner can be demounted and then mounted on the seat type mounting bases according to the requirements, the mounting manner is changed into the seat type mounting manner, and the multiple mounting manners can meet different mounting requirements of different occasions.

The invention provides an electronic building album somatosensory interaction device. The electronic building album somatosensory interaction device comprises a mounting box, an overhauling mechanism,a screen mounting mechanism, a projection mounting mechanism, an induction mounting mechanism, a moving mechanism, an adjusting mechanism, a power supply mechanism and a server, and the overhauling mechanism used for overhauling the somatosensory interaction device mounted in the mounting box is mounted on the side wall of the mounting box; the screen mounting mechanism used for screen display ofthe somatosensory interaction device is installed on the mounting box, the projection mounting mechanism used for projection of the somatosensory interaction device is installed in the mounting box,the induction mounting mechanism is installed in the mounting box, and the moving mechanism used for moving of the somatosensory interaction device is installed on the mounting box. And the adjustingmechanism for adjusting the inclination angle of the projection mounting mechanism is mounted in the mounting box. The electronic building album somatosensory interaction device has the advantages ofbeing movable and high in flexibility.

An exhibition projection equipment adjusting device disclosed by the present invention comprises a projector main body and a fixing plate, the middle position of the upper surface of the projector main body is fixedly connected with a fixing block, the middle position of the upper surface of the fixing block is provided with a groove, and the groove is matched with the bottom end of a connecting block. The fixing block and the connecting block are fixedly connected through an inserting rod, one end of an electric push rod is fixedly connected to the middle position of the upper surface of the connecting block, the other end of the electric push rod is fixedly connected with a rotating shaft, and the other end of the rotating shaft is fixedly connected with the output end of a motor. And an electric push rod is arranged below the motor, the operator adjusts the projection height of the projector through the electric push rod, and the watching experience of audiences can be improved.

The invention discloses a combined LED floodlight, which is characterized in that: at least two LED floodlights are arranged above the base, the LED floodlights are connected to the base through an adjustable bracket, and the adjustable bracket The connection points to the base are distributed symmetrically around the center of the base. The invention is mainly used for multi-object projection lighting, has a simple structure, can adjust the projection angle, projection direction and projection height of the LED projection lamp, and has good stability.