1089 results about "Troffer" patented technology

A lighting assembly is provided with a flexible elongate body extending between first and second ends thereof. The body has a base wall and a light transmissive cover. A lighting strip extends at least partially along the chamber. The lighting strip includes a plurality of light emitting members at least partially covered by the light transmissive cover. The body has a mounting arrangement configured to mount the lighting strip to the support. The mounting arrangement includes a first mounting formation on an outer surface of the elongate body. The mounting formation includes a recess, groove or channel on the outer surface of the body.

The lamp comprises a lamp body and the lampshade, the lamp body comprises a base, a hollow lamp pole fixed to the base and a lamp holder fixed to the top end of the hollow lamp pole, a light source plate is fixed to the top face of the lamp holder, and a power source and a control circuit board which are connected with the light source plate are arranged in the base; a protruding block is arranged on the edge of the top face of the lamp holder. A buckle groove is formed in the side face, away from the light source plate, of the protruding block. A mounting ring is fixed to the inner wall of the mounting end of the lampshade through a plurality of supporting rods, and a receding groove is formed in the inner edge of the mounting ring. The protruding block penetrates through the receding groove to enable the mounting ring and the buckle groove to be the same in position, the protruding block rotates to enable the mounting ring to be clamped into the buckle groove, and meanwhile the supporting rod abuts against the end face of the protruding block to be limited. The LED lamp is reasonable in structural arrangement, when the lampshade and the lamp holder are combined, the protruding block is inserted from the receding groove and rotates, the supporting rod abuts against the end face of the protruding block for limiting when the installation ring is screwed and buckled, the disassembly and assembly convenience is improved, and the LED lamp is not prone to loosening or damage.

The utility model provides an optimized detection device for the drawing force of a pipe seam anchor rod, and belongs to the field of pipe seam anchor rod drawing force detection. Comprising a hollow pipe seam anchor rod body, a stress clamping groove lantern ring arranged on the hollow pipe seam anchor rod body in a sleeving mode, a counter-force cone clamped into the stress clamping groove lantern ring, threaded steel bars screwed into the counter-force cone and the hollow pipe seam anchor rod body and a counter-force cylinder arranged on the periphery of the counter-force cone. A hydraulic jack and a pressure sensor are sequentially arranged above the counter-force cylinder; a pipe seam anchor rod gasket and an improved gasket are sequentially arranged below the counter-force cylinder; a cylindrical protrusion is arranged at the bottom of the improved gasket, and a groove is formed in the center of the improved gasket. The influence of the external environment on the hollow pipe seam anchor rod pull-out test is reduced by building the platform, and the stability and repeatability of the test are improved; by improving the design of the cylindrical protrusion and the groove of the gasket, the pull-out test force transmission structure is effectively attached to the uneven rock wall, and meanwhile the exposed end of the test anchor rod can be effectively protected through the device.

The utility model relates to a light guide installation structure, an automobile lamp and a vehicle, the light guide installation structure comprises a light guide, a lamp body and an LED support, the LED support is installed on the lamp body, the lamp body is provided with a pair of clamping groove structures which are oppositely arranged in the Y-axis direction, and the light guide is embedded and fixed on the lamp body through the clamping groove structures; a pair of grooves are formed in the LED support in the X-axis direction, and the two ends of the light guide in the X-axis direction are connected into the grooves respectively. Through the clamping groove structure, the groove and the turnups on the two sides of the light guide, the light guide is fixedly installed on the lamp body, the light guide is limited and stabilized in the X direction and the Y direction, therefore, the installation steps are simplified, the cost is saved, and the installation strength of the light guide is guaranteed.

The utility model discloses a lamp sealing structure which comprises a sealing groove, a sealing ring and a pressing frame, the sealing groove is formed in a lamp shell, the sealing ring is arranged in the sealing groove, and the pressing frame is arranged on the side, away from the lamp shell, of the sealing ring and used for pressing the sealing ring in the sealing groove. A cover plate is arranged on the lamp shell in a covering mode, a circle of groove is formed in the inner side end, facing the cover plate, of the sealing ring, and the peripheral side of the cover plate is inserted into the groove. A circle of groove is formed in the inner side end, facing the cover plate, of the sealing ring, the peripheral side of the cover plate is inserted into the groove, the sealing ring is tightly pressed in the sealing groove through the pressing frame, the sealing ring tends to deform when extruded by the pressing frame, and therefore the groove wall and the groove bottom of the groove are forced to be tightly attached to the cover plate so as to enhance the sealing effect. And meanwhile, the cover plate is inserted into the groove, so that the sealing effect is undoubtedly better than that of only attaching the side wall of the cover plate to the sealing ring.

The utility model discloses an LED lamp convenient to adjust, which belongs to the technical field of LED lamps and comprises a lampshade and a reinforcing rod fixedly mounted on a ceiling, the reinforcing rod and the lampshade are rotatably mounted, a first fixing rod is fixedly mounted on the reinforcing rod, a first fixing column is fixedly mounted at one end of the first fixing rod, and a second fixing column is fixedly mounted at the other end of the first fixing rod. A first motor is fixedly installed at one end of the first fixing column, a first transmission shaft is fixedly installed at the power output end of the first motor, a rotating disc is fixedly installed at one end of the first transmission shaft, a fixing pile is fixedly installed at the end, away from the first transmission shaft, of the rotating disc, and a groove is formed in the side wall of the lampshade; and the fixing piles are matched with the grooves. The first motor drives the rotating disc and the fixing pile to rotate through the first transmission shaft, then the lampshade is driven to swing through clamping connection of the fixing pile and the groove, and finally the angle of the LED lamp is adjusted, so that the use requirements of the LED lamp in various scenes are met.

The utility model discloses an integrated ceiling structure of a hidden lamp, which comprises a wooden transverse plate, a decorative plate is fixedly connected to the bottom of the wooden transverse plate, a wooden vertical plate is fixedly connected to the surface of the wooden transverse plate, an L-shaped pore plate is arranged on the surface of the wooden vertical plate, and a groove is formed in the surface of the wooden transverse plate. The L-shaped pore plate and the wood transverse plate are fixed through the cooperative use of the insertion block and the structural adhesive layer, the L-shaped pore plate and the wood vertical plate are fixed through the cooperative use of the first bolt rod and the first nut block, and then the L-shaped pore plate is fixed into a whole through the cooperative use of the lug block, the second bolt rod and the second nut block. The purposes that the L-shaped connecting pieces are additionally arranged on the surfaces of the wood plates, the L-shaped connecting pieces are connected and fixed through the bolts, then the connecting stability between the wood plates is improved, and then the overall stability of the hidden lamp integrated ceiling structure is improved are achieved.

This utility model discloses an anti-glare cover for a lamp, including a lampshade with a driving cavity and a control circuit board cavity within it. The lampshade also has a control switch groove and a display groove connected to the control circuit board cavity. Several lamp bead recesses are provided on the lampshade, and several snap-fit ​​ears for securing the lamp body are integrally formed along the edge of the lampshade. Screw holes are integrally formed on the lampshade. This utility model has a reasonable structural design. The snap-fit ​​ears, combined with the lamp bead recesses, allow the lamp bead lens to be positioned within the recesses, improving anti-glare performance. Furthermore, the driving cavity and control circuit board cavity facilitate the installation and positioning of the drive power supply and control circuit board, enhancing installation convenience and effectiveness. It is easy to assemble and disassemble and has strong applicability.

The utility model provides a fixation lamp for ophthalmic examination, and mainly relates to the technical field of fixation lamps. A vision fixation lamp for ophthalmic examination comprises a base and a power line, a stainless steel corrugated pipe is fixedly arranged in the center of the top of the base, a lamp body is fixedly arranged at the end of the stainless steel corrugated pipe, the power line penetrates through the stainless steel corrugated pipe to be communicated with the lamp body, and a first groove is formed in the bottom of the base. Second grooves are symmetrically formed in the positions, located on the two sides of the first groove, of the bottom of the base, a fixing plate is arranged at the bottom of the first groove in a matched mode, and a cushion block is arranged in each second groove in a matched mode. The utility model has the beneficial effects that the stainless steel corrugated pipe is adopted, so that medical personnel can conveniently adjust the fixation position, and the operation is quick; the first groove is matched with the fixing plate to fix the device on the surface of the cylindrical bracket; the second groove is matched with the cushion block to fix the device on the surface of the rectangular bracket, so that the adaptability of the device is improved.

The utility model discloses a full-spectrum LED (light-emitting diode) lamp, which relates to the field of LED lamps and comprises a mounting plate, a luminous body fixedly mounted at the center of the bottom of the mounting plate, an annular groove formed in the bottom of the mounting plate, an outer cover movably inserted in the annular groove, a transparent cover fixedly mounted at the bottom of the outer cover, and the luminous body positioned in the outer cover and the transparent cover. Grooves are formed in the two sides of the inner ring wall of the annular groove, clamping blocks are movably inserted into the two grooves, springs are fixedly connected between the two clamping blocks and the corresponding grooves, clamping grooves are formed in the two sides of the inner wall of the outer cover, and the ends, extending out of the grooves, of the two clamping blocks can be clamped into the clamping grooves in the two sides of the inner wall of the outer cover correspondingly. Screw grooves are formed in the two sides of the outer wall of the outer cover, and second screw holes are formed in the two sides of the mounting plate. According to the LED lamp, the outer cover is clamped in the annular groove in a rotating mode, then the outer cover is fixed in the annular groove through the second bolts, installation of the outer cover is completed conveniently, operation is easy and convenient, and later maintenance of the lamp is facilitated.

The present invention relates to an asymmetric diffusion lens for a backlight unit, comprising: a diffusion part having an elliptical upper surface having a long axis and a short axis and a circular bottom surface; the groove accommodating part is arranged at the center of the bottom surface of the diffusion part and provides a space for accommodating an LED package; the incident surface is an interface between the groove accommodating part and the diffusion part; and an emission surface which is a side surface and an upper surface of the diffusion part.

The hinge device comprises two connecting pieces with the middle portions hinged to each other and bases arranged on the two sides of the connecting pieces, the first ends of the connecting pieces are provided with first guide parts, the bases are provided with second guide parts, the first guide parts are connected to the second guide parts on the corresponding sides in a sliding mode, and the second guide parts are connected to the second guide parts on the corresponding sides in a sliding mode. One of the first guide part and the second guide part is a guide groove, the other one is a guide convex part, and the second end of the connecting piece is hinged to the base on the corresponding side. The two bases can relatively rotate in a reciprocating mode and have an initial position and an end position, and when the two bases are located at the initial position and the end position, the guide protruding parts abut against the initial limiting face and the end limiting face respectively, so that the movement angle between the two bases is limited, and in the opening and closing process of the lamp mirror applying the hinge device, the lamp mirror can be opened and closed conveniently. And the problems of interference between mirror surfaces and hardware exposure are reduced, and the user experience is improved.

The utility model relates to the technical field of LED lamps, and discloses an LED lamp mounting and fixing structure which comprises a fixing plate and a lampshade, two connecting blocks are fixedly connected to the bottom of the fixing plate, two grooves are machined in the top of the lampshade, the connecting blocks are movably connected into the grooves, inserting blocks are fixedly connected to the bottoms of the connecting blocks, inserting grooves are machined in one ends of the grooves, and the inserting grooves are formed in the other ends of the grooves. The inserting blocks are connected into the inserting grooves in an inserted mode, the pulling blocks are arranged outside the lampshade, the limiting rods are fixedly connected to the inner sides of the pulling blocks, one ends of the limiting rods are connected into the inserting blocks in an inserted mode, the connecting blocks and the inserting blocks are inserted into the grooves, then the lampshade is rotated, and the connecting blocks and the inserting blocks move along the interiors of the grooves; and one end of the inserting block is inserted into the inserting groove, the inserting block extrudes one end of the limiting rod, and when the inserting block is completely inserted into the inserting groove, one end of the limiting rod is inserted into the limiting groove, so that the lampshade is fixed to the lower portion of the fixing plate, and operation is easy and convenient.

The utility model relates to the technical field of automobile tail lamp manufacturing, in particular to a clamping mechanism for a screw locking jig for an automobile lamp. The utility model discloses a clamping mechanism for a screw locking jig for an automobile lamp. The clamping mechanism comprises a mounting plate and the like, the mounting plate is an attachment carrier of the clamping mechanism, the mounting plate is vertically assembled on the ground or a supporting plane for use, the object placing table is fixedly mounted on the plate surface of the mounting plate, a placing groove is formed in the middle of the object placing table, and an object placing plate is fixedly arranged in the placing groove of the object placing table. Through the design of the first electric sliding rail and the sliding block, the clamping mechanism can adapt to automobile lamps of different shapes and sizes in cooperation with a plurality of limiting rods, under the action of the first spring, the clamping mechanism can be tightly attached to the surfaces of the automobile lamps, the universality and flexibility of the clamping mechanism are improved, and the clamping reliability is ensured.

The utility model provides deep well casting aluminum rod is with lighting device, relates to deep well lamp field, including lamp stand, and install the pcb board in lamp stand, the pcb board is equipped with a plurality of lamp pearl, the lamp stand still has the lamp shade for covering the lamp pearl, the lamp shade surface has a plurality of recess, still has the ring groove of all recess intercommunication, still include the squeegee, the squeegee is pasted in the lamp shade surface, the squeegee one end still coincides with the lamp shade axis, still installed the motor in the pcb board, the part of motor output power stretches out from the axis of lamp shade outward, the utility model discloses through motor drive squeegee rotation and stick together lamp shade surface scrape, can actively, in time with the water drop or water film that condenses in lamp shade surface pushes to the radial recess, effectively solved the light scattering, attenuation problem that the lamp shade hung water led under the deep well high humidity environment, ensure that the light that the lamp pearl sent can be stable, clear and penetrate the lamp shade, provide sustained, high quality illumination for the aluminum rod surface visual inspection.

This utility model discloses an anti-glare glass and an electronic device. The anti-glare glass includes: at least one anti-glare surface; a groove array formed by multiple irregularly arranged grooves on the anti-glare surface; all grooves in the groove array have the same diameter, and the center distance between adjacent grooves is not exactly the same, and adjacent grooves share the same edge; the diameter of the grooves ranges from 15 to 150 μm, and the difference between the maximum and minimum diameter of the grooves is 3 to 70 μm; the depth of the grooves is the same; and the center distance between adjacent grooves is 15 to 120 μm. While possessing high anti-glare performance, it also eliminates flash points, moiré patterns, and rainbow patterns.

The utility model relates to the technical field of solid mercury core columns, and discloses an energy-saving lamp solid mercury core column with a groove, which comprises a connecting block, the top surface of the connecting block is in threaded connection with an inserting bolt, the surface of the inserting bolt is in threaded connection with a top plate, a circular groove is arranged in the middle of the top surface of the top plate, and a conducting rod is arranged in the circular groove. Stabilizing rings are fixedly installed on the outer surface of the conducting rod at equal intervals, mercury core columns are fixedly installed on the top face of the connecting block, a clamping groove is formed in the outer surface of the connecting block in a clamped mode, a mounting groove is formed in the bottom of the connecting block, an electronic element is arranged in the mounting groove, a maintenance plate is fixedly installed at the bottom of the electronic element, and a conducting block is fixedly connected to the bottom of the maintenance plate. According to the energy-saving lamp solid mercury core column with the groove, through mutual cooperative use of the top plate, the conducting rod and the stabilizing ring, the conducting rod and the stabilizing ring reinforce the mercury core column in the process of using the mercury core column by a person, and therefore the stability of the mercury core column is improved.

The utility model discloses a round ceiling lamp which comprises an installation lamp shell and an installation support, an installation groove is formed in the top of the installation lamp shell in a concave mode, a plurality of connecting clamping parts are arranged on the inner side wall of the installation groove in a protruding mode, a support connecting ring is arranged on the edge of one end of the installation support in a protruding mode, and a plurality of connecting clamping blocks are arranged on the outer side wall of the support connecting ring in a protruding mode. The bracket connecting ring is arranged in the mounting groove, and the plurality of connecting clamping blocks and the plurality of connecting clamping parts are respectively and correspondingly clamped and connected by rotating the mounting bracket, so that the mounting bracket is clamped and connected in the top of the mounting lamp shell. The circular ceiling lamp does not need screws or other fastening parts, clamping and fixing are completed only through rotation, operation is easy and efficient, the installation difficulty of a user is reduced, a multi-point-distributed clamping structure is formed through combination of the L-shaped clamping parts and the clamping blocks, the support can be effectively prevented from loosening, the use of the screws and other fastening parts is avoided, the material cost is reduced, and the installation efficiency is improved. Meanwhile, the assembly process is simplified, and economical efficiency is improved.

The utility model discloses a tool-free dismounting assembly and a lamp, and belongs to the technical field of lighting equipment, the tool-free dismounting assembly comprises a first mounting part, a second mounting part and a locking structure, the first mounting part is provided with a locking plate, the second mounting part is provided with an elastic part and a locking groove, and when the first mounting part and the second mounting part are mounted, the locking plate is locked by the elastic part and the locking groove. The locking groove moves towards the locking plate under the elastic action of the elastic part, so that the locking plate is embedded in the locking groove, and tool-free mounting is realized; when the first mounting part and the second mounting part are disassembled, force is applied to pull the locking groove to enable the elastic part to deform, so that the locking groove is separated from the locking plate, and the first mounting part and the second mounting part are disassembled without tools.

The utility model relates to a self-locking bracket which comprises a bracket body, a locking plate, a lock cylinder and a lantern ring, an arch wire groove is formed in the bracket body, a first working wing and a second working wing are arranged on the two opposite sides of the arch wire groove, the locking plate is arranged on the second working wing in a sliding mode, a locking groove is formed in the bottom face of the locking plate, and a mounting hole is formed in the second working wing. The lantern ring is at least partially or completely contained in the mounting hole and does not stretch into the locking groove of the locking piece, the lock cylinder is columnar, one end of the lock cylinder is arranged in the lantern ring, and the other end of the lock cylinder protrudes out of the lantern ring and is arranged in the locking groove of the locking piece. Compared with a traditional scheme, the lock cylinder is additionally sleeved with the lantern ring, the sum of the outer diameter size of the lantern ring and the outer diameter size of the lock cylinder is larger than the outer diameter size of an independent lock cylinder, the size of the installation hole can be designed to be larger, and the installation hole can be formed in an injection molding mode or a direct drilling mode. Therefore, the difficulty of forming the mounting hole in the second working wing can be effectively reduced, and the mass production efficiency is further improved.

The utility model relates to the related technical field of daylighting and smoke discharging skylight assembling, and provides daylighting and smoke discharging skylight assembling equipment which comprises a base and a pair of side seats, the side seats are fixed to the two sides of the base, riveting assemblies are arranged on the side seats, butt joint pressing and fixing assemblies are arranged on the base, and each butt joint pressing and fixing assembly comprises a plurality of stand columns. The stand columns are fixed to the surface of the base, platforms are arranged at the upper ends of the stand columns, the grooves are formed in the four opposite edges of the surface of the base, and first air cylinders are arranged on the inner side surfaces of the grooves. By means of the technical scheme, the problems that in the prior art, frames are connected one by one, then screws or rivets are driven for fixed connection, but manual operation is complex, efficiency is low, and dislocation is prone to occurring are solved.

The utility model relates to lighting lamp technical field especially is for the wind -guiding type lighting lamp of planting illumination, including tray assembly, and the lower end of tray assembly is connected with the lighting assembly through bolt, and the inboard fixed connection of lighting assembly has ventilation subassembly, and tray assembly includes tray body, and the inboard of tray body is established and has the through recess, and the inboard fixed connection of through recess has the convex shell, and the inboard of convex shell is established and has the gas collection groove, and the both sides fixed connection of convex shell has the filter plate, and ventilation subassembly includes the partition board, and the front end fixed connection of partition board has the fan, and the rear end fixed connection of partition board has the extension pipe, and the rear end fixed connection of extension pipe has the concentration pipe, and the inboard fixed connection of concentration pipe has the first bifurcated pipe and the second bifurcated pipe, and the inboard fixed connection of first bifurcated pipe has the first air -blowing nozzle, in the utility model, the device passes through the internal air circulation design, cools the key component, increases the soil air permeability, promotes the root system growth, discharges the hot gas, prolongs the life, and promotes the performance and the practicality.

The application provides a foundation combined module for fabricated buildings, which comprises a bearing plate, a first light plate and a second light plate, the bearing plate comprises a first three-dimensional steel bar net rack and a concrete layer covering the first three-dimensional steel bar net rack, a plurality of first strip-shaped grooves and first strip-shaped protrusions which are arranged in parallel and at intervals are arranged on both sides of the bearing plate, a plurality of second screw sleeves are arranged on both sides of the bearing plate, the second screw sleeves are connected with the first three-dimensional steel bar net rack, the first light plate and the second light plate are spliced to form a thin wall plate structure, and the first light plate and the second light plate are respectively spliced with both sides of the bearing plate to form a thick wall plate structure, so that the problems of poor generality of components of fabricated buildings, customized production of molds and high cost are solved.

This utility model discloses an integrated dual-color waterproof dust-detecting lamp lens, including a housing. A groove is formed on the top of the housing, and a lens is inserted into the inner cavity of the groove. An outer ring is provided on the left side of the housing, and a connector is fixedly connected to the right side of the housing near the bottom. The lens matches the groove and is fixedly connected to the inner cavity of the groove. An inner ring is fixedly connected to the inner cavity of the outer ring, and a connecting plate is fixedly connected to the right side of the outer ring. The connecting plate is fixedly connected to the left side wall of the housing. The connector has a U-shaped cross-section with the U-shaped opening facing upwards. In use, the lens is made of transparent material, while the housing is made of opaque black material. The lens and housing are integrally injection molded. Compared to separate lenses and housings, this device can provide waterproofing and reduce stray light.

The present disclosure claims a street lamp, comprising a lamp housing and a carrier panel, a light transmission panel, a lamp panel, a light supplement assembly and a controller respectively arranged in the lamp housing; the light supplement assembly comprises a plurality of light supplement strips; the carrier panel is provided with a plurality of spaced convex strips; the light transmission panel is provided with a plurality of convex ribs; a bottom of the convex rib is provided with a groove to match the corresponding convex strip, an upper surface of the convex rib is inclined and parallel to an upper surface of the convex strip; the controller is electrically connected to the light panel and the light supplement strip, respectively, so as to control on / off states of the light panel and the plurality of light supplement strips.

The utility model discloses a bedside induction lamp strip structure, which belongs to the technical field of household lighting equipment and comprises a bed frame, light aluminum grooves are adhered to the peripheral edges of the lower side of a bed board below the bed frame, and the adjacent light aluminum grooves are communicated through broken-line-shaped wiring plastic grooves. The upper side face of the light aluminum groove is bonded to the lower side face of the bed board, a through groove is inwards formed in the lower side face of the light aluminum groove, grooves extending along the through groove are machined in the inner ends of the two sides of the lower end of the through groove, flexible light uniformizing covers are installed in the grooves in an embedded mode, and a lamp strip is fixedly bonded to the top face of the through groove in the extending direction of the through groove. According to the bedside induction lamp strip structure, the surrounding lamp strip is supported and installed through the aluminum groove, the problems that lamp beads directly irradiate the floor and light beams are not uniform are solved, meanwhile, the power source driving box is positioned and installed through the support, the power source driving box is conveniently and independently disassembled for maintenance, and the problem that the power source driving box falls to the floor and is damaged by dust is solved; and the night use experience of the bedside induction lamp of the user is improved on the whole.

The invention belongs to the technical field of navigation signal lamps, and particularly relates to a navigation signal lamp for a polar region and a deicing and signal control method thereof.The navigation signal lamp comprises an outer shell, an outer insulation pad, an outer heating component, an outer lampshade and a lamp body component, the outer surface of the outer shell is conformal with a silencing layer covering a boat body, and an annular groove for containing the outer lampshade is formed; the outer lampshade is basically flush with the outer surface of the outer shell, the outer insulation pad is arranged between the outer lampshade and the outer shell, the outer heating component is in heat conduction connection with the outer lampshade, comprises a heat conduction metal piece and an embedded heating source and is filled with a heat conduction medium, and the sealing structure tolerates deep sea water pressure; the inner heating lampshade is provided with a transparent conductive heating layer, and the navigation signal lamp further comprises a control printed board component which is used for temperature monitoring, heating control and light attenuation monitoring. The problem that reliability and adaptability are insufficient under the conditions of polar region low temperature, freezing and impact is solved, and rapid deicing and demisting, deep sea pressure resistance, stable light emitting and high visibility are achieved.

The utility model relates to the technical field of teaching aids, and discloses a day and night alternation demonstration instrument, which comprises an earth shaft, an earth model, a clamping seat and a base, one end of the earth shaft is connected with the earth model, the other end of the earth shaft is connected with a circular ring, an earth shaft connecting hole is arranged in the circular ring, the upper hole is deeper, and the lower hole is shallower. During connection, the ground shaft is inserted into the upper hole firstly and then inserted into the lower hole, the top and the bottom of the circular ring are connected with the two ends of the sunlight perpendicular incidence plate through connecting rods, circular ring connecting holes are formed in the sunlight perpendicular incidence plate, the upper hole is deeper, the lower hole is shallower, the ground shaft is inserted into the upper hole firstly and then inserted into the lower hole during connection, and parallel light rays are marked on the front face and the back face of the sunlight perpendicular incidence plate. The center line of the parallel light rays is marked with a direct solar radiation point, a groove in the bottom of the direct solar radiation plate is connected with a groove in the top of the clamping base, the direct solar radiation plate and the clamping base are connected with the base, the first day and night plate is connected with the base, and the second day and night plate is connected with the base. The demonstration instrument is convenient to disassemble and assemble and has interestingness.