60results about How to "Flexible direction adjustment" patented technology

The invention belongs to the field of the additive manufacturing correlation technique, and discloses a laser selective melting forming device and method. The forming device comprises an industrial personal computer, a magnet exciting coil set, an electronic voltage adjuster, an adjustable resistor, a single-chip microcomputer, an ultrasonic power source and an ultrasonic vibration device. The magnet exciting coil set comprises multiple magnet exciting coils, and the multiple magnet exciting coils and the ultrasonic vibration device are arranged around a substrate of a forming cavity during use. The magnet exciting coils are connected with the industrial personal computer and the adjustable resistor, and the electronic voltage adjuster is connected with the magnet exciting coils and the adjustable resistor. The ultrasonic power source is connected with the single-chip microcomputer and the ultrasonic vibration device. The single-chip microcomputer is further connected to the electronicvoltage adjuster. The industrial personal computer is used for controlling the angle and on-off of the magnet exciting coil set according to different laser scanning phase angles so as to achieve zoning control of a magnetic field. The single-chip microcomputer is used for controlling the amplitude and frequency of the ultrasonic vibration device. According to the laser selective melting formingdevice and method, high-performance laser selective melting forming is achieved, and structure consistency is improved.

The invention discloses an intelligent nursing device and a control method thereof. The intelligent nursing device comprises a mounting plate, driving wheel components are symmetrically arranged at four corners of the bottom surface of the mounting plate, a cleaning part is arranged in the middle of the bottom surface of the mounting plate, the top surface of the mounting plate is provided with anilluminating lamp, a loudspeaker, a temperature and humidity detection part, a voice recognition module, a control panel, a fire extinguishing part, a power supply and a bluetooth module, a motor frame is arranged in the middle of the top surface of the mounting plate, a second servo motor is arranged in the motor frame, a rotating platform is fixed at the top end of an output shaft of the secondservo motor, an alarm lamp is arranged on the outer side surface of the rotating platform, a lifting frame is arranged in the middle of the top surface of the rotating platform, a riding platform isfixed at the top end of the lifting frame, a visual detection sensor is arranged at the left end of the top surface of the riding platform, a steering engine is fixed at the right side surface of theriding platform, a mechanical arm extending rightwards is arranged at the bottom end of the steering engine, and a vital sign detection sensor is arranged on the mechanical arm. The intelligent nursing device is comprehensive in function and high in practicability.

The invention relates to the field of research on underwater robots, and in particular relates to a novel spherical underwater robot provided with three propellers and a heavy pendulum. The spherical underwater robot is capable of steering by the propellers and adjusting the pitch attitude by the heavy pendulum. The spherical underwater robot adopts a transparent shell made of organic glass, the three propellers pass through a spherical shell, the robot can steer by the thrust difference of the propellers respectively arranged on the two sides, the pitch attitude can be changed by the counter-acting force of the heavy pendulum generated in the rotating process, and the heavy pendulum is also used for adjusting the center of gravity of the robot so as to enable the attitude of the robot to be stable. The depth of the robot can be adjusted by adjusting the attitude change of the robot when the robot is pushed forward. The weight of the robot is enabled to be equal to the buoyancy by adjusting the weight of the heavy pendulum, so that the robot can suspend in water.

The invention discloses a house applied to an in-site measuring study of wind pressure of a roof of a low-rise building. The house comprises a house body, a wind pressure measuring system for measuring the wind pressure of the windward side of the housing body, a base which is arranged below the house body and used for bearing the house body, and an upper annular groove, wherein a lower annular groove which is corresponding to the upper annular groove is formed in the lower surface of the base; a plurality of rolling balls are arranged in the lower annular grooves; the upper annular groove can compress the rolling balls on the lower annular groove; the diameter of each rolling ball is less than or equal to the width of the upper annular groove and the lower annular groove and more than the distance from the bottom of the upper annular groove to the bottom of the lower annular groove. The house is a wind resistance testing house which can flexibly adjust the direction; a wind pressure sensor in the testing house can be used for acquiring the wind pressure data of wind in different directions to the testing housing, so that the test consumption can be greatly reduced, and the time, manpower, materials and property can be saved a lot.

The invention discloses a rotary watering-free flowerpot, comprising a base, a support, a tray and a pot body; the flowerpot is characterized in that the tray is supported above the base by the support, the pot body is arranged above the tray, balls arranged in a guide rail around the upper surface of the tray support the periphery of the bottom of the pot body, and a round groove in the middle of the bottom of the pot body sleeves a round bulge at the middle of the upper surface of the tray. By means of the arrangement, the flowerpot is used for planting plants, i.e., short and small flowers, the direction of the pot body can be flexibly adjusted according to the illumination need and the watching angle of the flowers without using a flower frame, the height of the flowers can be increased, and often watering is not needed; planting the flowers by using the flowerpot is free from worry and time-saving, and planting requirements are met.

The invention provides a heat dissipation device used for emitting heat caused by heating electronic elements and comprises a centrifugal fan and a radiator. The radiator comprises a plurality of flow channels and the centrifugal fan is used for generating cooling draught to carry out the compulsory heat dissipation for the radiator. The centrifugal fan is provided with an air outlet and the radiator is aslant arranged corresponding to the air outlet. By the slantwise arrangement of the radiator, the direction and the position of the cooling draught in the air outlet can be flexibly adjusted, thus being convenient for the shape design of a device case.

The invention discloses a device for improving the precision degree of a circular-arc Brazilian test. The device comprises an upper base which is mounted under an upper pressing head of a testing machine, and a lower base which is mounted above a lower pressing head of the testing machine, wherein the upper base and the lower base are arranged correspondingly; the lower side of the upper base is movably connected with an upper circular-arc pressing block and the upper side of the lower base is movably connected with a lower circular-arc pressing block; the structures of the lower circular-arc pressing block and the upper circular-arc pressing block are the same; an explosive test sample storing space is formed between the lower circular-arc pressing block and the upper circular-arc pressing block; the lower base is mainly composed of an upper assembly and a lower assembly; and the upper assembly and the lower assembly are movably matched. Meanwhile, the invention discloses an installation and debugging method of the device for improving the precision degree of the circular-arc Brazilian test; and the installation and debugging of a tool can be carried out by the central axis of the tool and a positioning cylinder, so that the lower circular-arc pressing block and the upper circular-arc pressing block are at a coaxial alignment state in a loading process, and furthermore, the testing precision degree of the circular-arc Brazilian test of crispy explosive is improved.

The invention relates to a high-voltage cable isolating support. The isolating support comprises a mounting substrate, supporting strips and connecting bolts, wherein the supporting strips are mounted on the mounting substrate through the corresponding connecting bolts. The high-voltage cable isolating support has the advantages of simple and practical structure, high expansibility due to that the length and direction of each supporting strip can be flexibly adjusted through corresponding long circular grooves, particular suitability for the isolating and supporting operation of multiple high-voltage cables, and light weight, high strength and corrosion resistance due to that an aluminum magnesium alloy is adopted as the material, suitability for an outdoor high-altitude operation, and long service life.

The invention discloses a tunnel oblique photography device comprising: a tripod, a central bearing frame, a digital camera, a three-axis electronic cradle head, a cradle head control module, a camerasynchronization controller and a power module, wherein the central bearing frame is mounted on the tripod, the digital camera, the three-axis electronic cradle head, the camera synchronization controller and the power module are all integrated on the central bearing frame, an attitude line of the three-axis electronic cradle head and a video line of the digital camera are both connected with thecradle head control module, a shutter release of the digital camera is connected with the camera synchronization controller, the camera synchronization controller controls multiple digital cameras tosimultaneously expose, the cradle head control module controls the rotation angle of the three-axis electronic cradle head, and the power module and the three-axis electronic cradle head are electrically connected with the camera synchronization controller. The tunnel oblique photography device provided by the invention improves the collection working efficiency of tunnel digital images and ensures the quality of the digital images.

The invention relates to a combinable and detachable polishing machine. The combinable and detachable polishing machine comprises lifting mechanisms, fixing plates, bolts, motors, rotating shafts, polishing devices, a die sleeve and a dust suction device. Each polishing device comprises a polishing disc and a disc base, the polishing disc and the disc base are locked through the bolts after beingembedded and driven by the rotating shafts to rotate, and the rotating shafts are provided with kinetic energy through the motors. The height of the polishing devices is adjusted through the lifting mechanisms, transverse movement is achieved through cooperation of transverse sliding rails on machine bases of the lifting mechanisms and guide grooves in bases, the polishing devices and the die sleeves rotate in the opposite direction to achieve polishing and grinding, and ground dust is collected by the dust suction devices to avoid environmental pollution. The combinable and detachable polishing machine can move transversely, stretch out and draw back up and down, rotate by 360 degrees and polish the metal surface in an all-around mode, the working efficiency is improved, pollution is small, the combinable and detachable polishing machine can be used in a combined mode and can also be used independently, and high practicability is achieved.

The invention discloses a flexible-operation-type trailer special for raw wood transportation. According to the flexible-operation-type trailer special for raw wood transportation, a frame for containing raw wood is arranged on a trailer body, a traction rod is arranged at the front end of the frame, a rotation shaft is arranged on a rod body of the traction rod, and a universal wheel is arrangedat the bottom of the rotation shaft. A handle at the top of the rotation shaft is controlled to rotate so that the direction of the universal wheel can be adjusted, in this way, on the condition thatthe trailer is not connected with a traction machine head, the direction of the trailer body can be flexibly adjusted, and the trailer is more flexible and convenient to use.

The invention discloses a cutting and transferring device for packaging paper boards. The device comprises a bottom support, a swirling table, an upper conveying frame and a cutting frame. The bottomsupport is of a cuboid-shaped structure, the swirling table of a cuboid-shaped structure is arranged above the bottom support in parallel, the upper conveying frame is horizontally arranged above theswirling table, and cartridge clip rails are horizontally arranged on the two sides of the top of the upper conveying frame. The device has the beneficial effects that third motors drive a cutting disc to rotate to cut the packaging paper boards, a first hydraulic cylinder pushes a sliding table to slide on the cartridge clip rails of the upper conveying frame through a first hydraulic column, thecut positions of the packaging paper boards are changed, a second hydraulic cylinder drives a push plate to move front and back through a second hydraulic column, the push plate pushes the packagingpaper boards to move front and back to adjust the cut positions, on one hand, it is guaranteed that the cutting precision of the device for the packaging paper boards is higher, on the other hand, incooperation with two movable cutting mechanisms, the packaging paper boards are synchronously cut, and the cutting efficiency of the device for the packaging paper boards is greatly improved.

The invention discloses a manipulator for transferring bricks. The manipulator comprises a base, a supporting column, a cantilever, a mounting block, a clamp and a lifting mechanism, wherein the supporting column is fixed to the base, one end of the cantilever is rotatably arranged at the top of the supporting column, the mounting block is arranged at the other end of the cantilever, and a sliding groove allowing the clamp to slide up and down is formed in the mounting block; the clamp is pulled by the lifting mechanism to move up and down to be matched with the clamping jaw on the clamp so as to clamp piled bricks. The multiple clamping jaws are matched with the multiple clamping air cylinders to conduct multi-point clamping on a brick stack, so that the clamping force is guaranteed, bricks are prevented from falling off in the transferring process, and the brick stack is transferred.

The invention discloses a terahertz radiation generation method based on interaction of multiple electron beams and plasma. The method comprises the following steps of ionizing a neutral gas by using a plasma source, and generating plasma in a certain density range in a vacuum cavity; injecting a plurality of (two or more) electron beams into the plasma at a certain emission included angle, adjusting the emission included angle between the electron beams in advance to enable the electron beams to form a convergence point in the plasma, and when the electron beams converge to one point in the plasma, exciting plasma waves at the convergence point; and finally, enabling the plasma wave to cause the electron oscillation at the electron beam convergence point, so that the high-power terahertz radiation with the frequency located at the plasma frequency and the frequency doubled by the plasma frequency is excited.

The invention relate to an intelligent free kick and corner kick machine. The intelligent free kick and corner kick machine comprises a frame, a football storage device, a launching platform, a support and rotating device, an angle adjusting device, an energy-storage launching device and an electric control box and is characterized in that the frame comprises a frame-shaped framework; the footballstorage device comprises a football storage rack, a front football stopper and a rear football stopper; the launching platform is provided with a football positioning mechanism; the support and rotating device is mounted on the lower layer of the framework and located at the lower end of the launching platform; the angle adjusting device is mounted on the lower layer of the framework and locatedat the lower end of the launching platform; the energy-storage launching device is mounted on the launching platform, and the action executing part of the energy-storage launching device directly faces the football positioning mechanism. The intelligent free kick and corner kick machine has the advantages that the support and rotating mechanism is used for adjust the left and right directions of the launching platform, and the angle adjusting device and a tensioning device are coordinated to adjust the vertical angles of the launching platform; by the coordination of the support and rotating device, the angle adjusting device and the tensioning device, the directions and angles of the launching platform can be flexibly adjusted, and accordingly the launching directions and angles of footballs are changed, and intelligent free kick and corner kick are achieved.

The invention discloses a drilling wall-protecting slurry circulating device and method for engineering investigation in an underground water-rich area. The drilling wall-protecting slurry circulating device comprises a transport cart, a support plate, a working box, a cleaning mechanism, a conveying mechanism and a mixing mechanism, wherein the support plate is installed on the top of the transport cart, the working box is arranged on the top of the support plate, the conveying mechanism is arranged on one side of the interior of the working box, the mixing mechanism is arranged in the middle of the interior of the working box, and the cleaning mechanism is installed in the middle of the top of the working box. After the structure is adopted, reverse circulation can be performed on drilling wall-protecting slurry, the viscosity of the slurry is further increased, the inner wall of a drill hole is preferably protected, collapse is prevented, and additionally, the device is arranged on the transport cart, so that the whole device can be further conveniently turned over and used.

The invention discloses a rod end knuckle bearing and a production method thereof. The rod end knuckle bearing comprises a rod end, an outer ring is arranged at the top of the rod end, an inner ring is arranged inside the outer ring, a rolling part and a bearing sleeve are arranged inside the inner ring, and a rolling shaft is arranged inside the bearing sleeve in a penetrating and inserting mode, wherein the inner ring is an eccentric inner ring, and the inner ring and the outer ring can relatively rotate in a self-lubricating mode. The rod end knuckle bearing has the beneficial effects that the direction of the rolling shaft can be flexibly adjusted, the transmission effect is good, the noise is low in the use process, installation is easy, the cost is low, the service life is long, and the rolling shaft can rotate at medium-high speed.

The invention discloses a multi-degree-of-freedom intelligent swinging sleep-aiding bed. The bed comprises a bed body, a mattress and a sleep adjusting system, the mattress is placed on the bed body, and the mattress is in communication connection with the sleep adjusting system; and the mattress is placed on the bed body, the mattress is in communication connection with the sleep adjusting system, the sleep adjusting system comprises a heart rate detection bracelet, a sleep-aiding adjusting device control system and a mobile phone intelligent monitoring system, the heart rate detection bracelet is in communication connection with the sleep-aiding adjusting device control system, and the mobile phone intelligent monitoring system and the sleep-aiding adjusting device control system can be connected through Bluetooth. The sleep-aiding bed is simple and convenient in operation process and stable and smooth in swinging process, the sleep adjusting system can monitor the sleep state of a user in real time and provide a proper sleep-aiding mode according to the sleep state of the user, the user can check the sleep quality and other conditions through a mobile phone terminal, the sleep-aiding mode can be adjusted according to user preferences, the intelligent sleep-aiding adjustment can adapt to different user conditions, and the sleep quality of the user is improved.

The invention discloses a special auxiliary detection tool for power distribution ultrahigh frequency detection, which comprises a telescopic insulating rod, an ultrahigh frequency sensor bracket, a universal joint and an electric hydraulic push rod. One end of the universal joint is fixedly mounted at the center of the lower surface of the ultrahigh frequency sensor bracket through a bolt; the other end of the universal joint is fixedly connected with the telescopic insulating rod through a bolt; according to the invention, the ultrahigh-frequency partial discharge detection work can be carried out on the distribution network pole-mounted switch and the isolation switch without climbing a pole by a detector, internal discharge hidden dangers of the distribution network pole-mounted switch and the isolation switch can be found in time, the fault rate of the distribution network pole-mounted switch and the isolation switch is reduced, and the operation reliability of the distribution network pole-mounted switch and the isolation switch is improved; moreover, the detection personnel do not need to be close to the electrified equipment, thereby preventing the electrified equipment from causing personal injury to the detection personnel, and improving the safety of the ultrahigh-frequency partial discharge detection work of the distribution network pole-mounted switch and the isolation switch.

The invention provides a planting support comprising a support body and multiple flowerpot base layers. The support body comprises a support base and a fixed hollow support column which is fixedly connected with the support base. A threaded hole is formed in one side of the upper end of the fixed hollow support column. The upper end of the fixed hollow support column sleeves a first-layer thin hollow support column vertically movable. A joint of the support columns is fixed through a fastening handle and the threaded hole. The first flowerpot base layer is connected with the first-layer thin hollow support column and capable of rotating within the plane, and under action of the first-layer thin hollow support column, the second-layer thin hollow support column is fixed with the second flowerpot base layer in the same connection way. The planting support has the advantages that support height and flowerpot direction can be flexibly adjusted; besides, in case of the same direction, water in the upper flowerpot flows into the lower flowerpot, avoiding waste.

The invention discloses a manual opening-closing type fast concentration melting furnace. The manual opening-closing type fast concentration melting furnace comprises a furnace body. One side face of the furnace body is provided with a feed end. The front end of the furnace body is provided with a discharge end. The discharge end is provided with a first discharge groove and a second discharge groove which are of a V-shaped structure. Auxiliary material scraping devices are arranged above the first discharge groove and the second discharge groove respectively. The feed end of the furnace body is integrally provided with a prominent conical feed canister. The side face of the conical feed canister is provided with a rotation shaft vertically. The rotation shaft is sleeved with a rotation sleeve. An opening-closing door is integrally welded to the side end of the rotation sleeve. The end of the opening-closing door is detachably connected with the furnace body through a screw assembly. The manual opening-closing type fast concentration melting furnace is simple in structure, simple to operate, and convenient to feed and maintain. The discharge efficiency is improved. The discharge quantity is increased. The phenomenon of material liquid blocking is avoided. The continuous melting operation in the furnace body can be ensured. The failure rate is lowered. The cost is reduced.

The invention discloses a tunnel kiln with angle-adjustable circulating air. The tunnel kiln comprises a case with a baking passage and a circulating air system above the baking passage. The circulating air system comprises a centrifugal fan fixedly mounted on the case, a main air pipe communicated with the centrifugal fan and a plurality of air return pipes disposed on the main air pipe at intervals. The main air pipe is fixed on the case along the length direction of the baking passage. The air return pipes are vertical to the main air pipe and connected to the same in a way that each air return pipe can rotate around self-axis. The bottom pipe wall of each air return pipe is provided with screen holes distributed along the length direction of the air return pipe. The tunnel kiln has the advantages the main air pipe and the air return pipes are reasonably arranged, even and stable circulating air can form in the case, surface color of baking products can be well controlled, different convection strength can be selected according to different baking products, and high universality is achieved.

The invention relates to a pipeline carrying and clamping device and method capable of achieving multi-degree-of-freedom adjustment and belongs to the technical field of construction tools. The devicecomprises a base, a circumferential rotating assembly, a pitching angle adjusting assembly, a clamping assembly and a movable chuck. The circumferential rotating assembly is arranged on the base. Thepitching angle adjusting assembly is arranged on the circumferential rotating assembly; the clamping assembly is arranged on the pitching angle adjusting assembly, the movable chuck is arranged at the tail end of the clamping assembly, multi-degree-of-freedom adjustment is conducted on a clamped workpiece of the movable chuck through cooperation of the circumferential rotating assembly, the pitching angle adjusting assembly and the opening degree of the clamping assembly, and the requirement for accurate alignment of the clamped workpiece in the carrying and installing process is met.

The invention discloses a multifunctional organ transplantation working vehicle and an application method thereof. The working vehicle comprises a main vehicle body, wherein a support is arranged below the main vehicle body, an operating platform is arranged at the upper end of the main vehicle body, a thermal-insulation box is arranged at the left half part of the main vehicle body, and an upper end cover of the thermal-insulation box is used as the left half part of the operating platform; a first peristaltic pump and a second peristaltic pump are arranged at the right half part below the operating platform; a lamp arm is arranged on one side of the main vehicle body, and an operation lamp is arranged at the upper end of the lamp arm; a stretcher is arranged below the main vehicle body; and a negative-pressure suction device is also arranged below the operating platform of the main vehicle body. By means of the working vehicle, on the premise that an existing operation vehicle is not required to be transformed, the peripheral space can be fully utilized, cleanliness of an operation area can be guaranteed, and the requirement for accurate regulation of organ perfusion pressure can be met; and meanwhile, smooth obtaining of donor organs and repairing of the organ operating platform for operations are guaranteed, the blank of the lack of professional operating equipment at present is filled up, and a lot of problems during operations are solved.

The invention belongs to the military field and discloses a mute nuclear submarine. High heat provided by a high-temperature gas cooling reactor is adopted for thermoelectric power generation, the noise in the power generation process is low, the generated electric energy is used for driving a high-pressure and large-flow water pump, water jet flow is used for propelling the nuclear submarine and adjusting the direction and the posture of the nuclear submarine, the noise of the propelling mode is small, equipment making noise is arranged on a sound insulation foundation, the equipment and the foundation are placed in vacuum space, and therefore the mute effect of the nuclear submarine can be realized, and high temperature of the high-temperature gas cooling reactor can be prevented from being guided into the work area of personnel.

The invention discloses a weight-balancing inflatable therapeutic massage air bag cushion and a preparation process thereof, and relates to the technical field of massage air bag products. According to the air bag cushion, inflated air circulates and complements in the convection air chambers through the airflow channels, so that the upper surface of the cushion body is not completely flattened, an uneven surface is formed, and the extrusion massage effect on a human body is achieved; the upper gasket adopts an elastic cloth layer to be compounded with at least one TPU film layer to obtain TPU composite elastic cloth, and the lower gasket adopts a TPU film layer to be compounded with a spunlace layer or a cloth layer. The cushion body composed of the upper gasket and the lower gasket increases the elasticity, the waterproof performance and the anti-explosion performance of the air bag cushion. During preparation, the TPU composite elastic cloth is subjected to hot press molding to obtain the upper gasket, and after the TPU composite elastic cloth is heated by an oven, the molding rate, the cooling rate and the quality of the gasket body are improved through cooperation of vacuum adsorption of air-cooling hot press molding equipment and air cooling or cooperation of concave-convex die molding equipment of an oil press and water cooling.

The invention discloses a feeding and filling device for garbage incineration. The feeding and filling device for garbage incineration comprises a lifting and supporting platform, top trays and four swing grabbing disks. The four swing grabbing disks are arranged over the corresponding top trays. The two sides of the lifting and supporting platform are provided with a plurality of side lifting frames in parallel. First insertion shafts penetrate through the middle portions of the side lifting frames on the two sides of the lifting and supporting platform. The feeding and filling device for garbage incineration has the beneficial effects that third hydraulic cylinders on the swing grabbing disks drive filling hoppers through third hydraulic rods to turn downwards to dig waste. Moreover, fourth hydraulic cylinders drive V-shaped seats and the filling hoppers through fourth hydraulic rods to turn upwards to prevent the waste from being scattered from the filling hoppers. Afterwards, guidewheels drive the feeding and filling device to move to a filling port of a garbage incineration furnace. The filling hoppers are driven through the fourth hydraulic cylinders to turn over to topple the waste into the garbage incineration furnace to be incinerated and cleaned. The feeding and filling device for garbage incineration is high in operation automation degree and capable of saving timeand labor in the using process.

An intelligent heat collection and storage type solar water heater comprises a support frame assembly, a water tank and a heat collection pipe, wherein the water tank and the heat collection pipe arearranged above the support frame assembly. The support frame assembly comprises a transverse plate, a base supporting mechanism and side frame supporting mechanisms which are symmetrically connected to the two sides of the transverse plate, a sunlight tracking device is arranged on the upper surface of the transverse plate, and the lower surface of the transverse plate is rotatably connected withthe base supporting mechanism in an inserted mode through a vertical column; each side frame supporting mechanism comprises a side frame unit hinged to the front side and the rear side of the outer end of the transverse plate, wherein the side frame unit consists of a hollow bottom plate and a vertical edge plate which are integrally connected, a plurality of channel barrels are fixedly arranged on the upper surface of the hollow bottom plate, the upper end and the lower end of each channel barrel are not sealed, the lower end of each channel barrel extends into a cavity of the hollow bottom plate, and a piston rod is inserted into each channel barrel in an adaptive mode. The solar water heater can automatically catch light and collect heat, the direction and inclination angles can be flexibly adjusted, and the heat collection and insulation performance is stronger due to wrapping of a light-transmitting film and a light-reflecting film.