98results about How to "No shadow" patented technology

The invention discloses an anti-glare flame-retardant polycarbonate material which comprises the following components by weight percent: 85-95 percent of polycarbonate, 2-12 percent of flame retardant, 0.1-1 percent of flame-retardant synergist, 0.1-5 percent of anti-glare agent, 0.3-2 percent of anti-ultraviolet agent, 0.05-3 percent of blue light absorbent, 0.2-3 percent of antioxidant and 0.2-2 percent of lubricating agent. The anti-glare flame-retardant polycarbonate material not only has an excellent anti-glare function, but also has higher light transmittance, and is capable of absorbing the blue wave band of the LED lighting spectrum at the same time. The invention further discloses a preparation method of the anti-glare flame-retardant polycarbonate material, which comprises the following steps: firstly preparing flame-retardant masterbatches, organic silicon microbead anti-glare masterbatches and blue light absorption masterbatches, and then preparing the anti-glare flame-retardant polycarbonate material, so that the performance anti-glare flame-retardant polycarbonate material is improved. The anti-glare flame-retardant polycarbonate material is particularly suitable for preparing an optical housing for LED lighting.

The invention provides a light-emitting diode (LED) eye-protecting lamp with multiple illuminators which comprises an LED area light source, a heat dissipating shell, a rotating shaft structure matched with a natural light sensor and a low-voltage direct current drive controller used for adjusting brightness. The LED eye-protecting lamp with multiple illuminators has the advantages that adjustment control function is intelligent, low-voltage input is safe, appearance of the eye-protecting lamp can be designed variously, problems of direct glare of the light source illuminators and indirect glare of the lighting device are solved under the condition that high-light of the eye-protecting lamp is ensured, structure is reasonable and compact, manufacturing is convenient, purposes of energy-efficient, environmental protection, conscious, flicker-free, no radiation, no glare, no shadows and no light pollution are achieved truly, and the LED eye-protecting lamp with multiple illuminators has high social benefits and economic benefits.

The invention relates to the field of a polyester film and in particular to a white polyester anti-scraping reflector plate with excellent anti-scraping performance and a preparation method thereof. To solve the problems of easy scraping of light guide plates and easy generation of shadows in the present reflector plate, the invention provides an anti-scraping reflector plate, comprising a main layer of the reflector plate and an auxiliary layer on the main layer; the main layer comprises a thermoplastic resin, in which micropores are formed; the auxiliary layer comprises 75-85 wt% of polyethylene glycol terephthalate, 0.1-0.5 wt% of inorganic filler particles, 5-10 wt% of antistatic agent, 3-8 wt% of light stabilizer and 1-5 wt% of ultraviolet absorber; the average grain size of the inorganic filler particles is 5-20 microns. The anti-scraping reflector plate is capable of preferably preventing the light guide plate from being scraped, preferably preventing the light guide plate and the reflector plate from being absorbed and does not generate shadows.

The invention relates to an LED (Light Emitting Diode) bulb wick structure made from a 360-degree illuminating flexible lamp filament and a manufacturing method. The LED bulb wick structure is composed of a lamp filament, a wick shore and a fixing snap ring, wherein the wick shore is connected with at least one single-color or multi-color semiconductor illuminating LED flexible lamp filament which is randomly bent and formed; a filament fastening component is formed in the manner of winding the filament into the fixing snap ring on the wick shore; the two ends of the LED flexible lamp filament are respectively riveted with a filament metal wire of the wick shore; an independent airtight illuminator is formed by the LED flexible lamp filament and a lampshade in the manner of sealing, exhausting, vacuumizing and filling helium. The invention has the beneficial effects that the LED bulb wick structure is characterized by high efficiency, energy-saving effect, long service life, 360-degree illumination, no disconnection, no shadow, multicolor, multi-modeling, and the like; random shapes and patterns are formed according to the quantity and position locating of the wick shore and the fixing snap ring; the illuminating components in different forms can be formed; different illuminating effects can be achieved according to different use requirements.

The invention relates to an electric luminous device, particularly relates to a Chinese-style lantern which has a wind power generation function and is capable of controlling luminescence by means of automatically inducting external illumination brightness degree, and provides a self-induction wind-powered lantern. The self-induction wind-powered lantern comprises a hanging seat module, a wind power module and an electric control module and consists of 27 parts including a hanger, roller bases, a variable-speed fluted disc, an auspicious cloud cover, tassels, a tassel stem, a wind wheel lantern body, a positioning top plate, a reverse conical pulley, a single-phase generator, a manual switch, an illumination sensor, a photoelectric controller, an annular lamp holder and the like. Shortcomings that existing electric luminous equipment needs an external power source and does not have national characteristics and the like are overcome, the self-induction wind-powered lantern does not need an external power source, is rich in national characteristics and reliability, emits bright and brilliant lamplight, can be widely used for being hung and used on buildings such as pavilions, corridors of rooms, eaves, door lanes and the like, not only can be used as a daily luminous device, but also can be used as small-sized power generating equipment, can meet service requirements of hotels, government offices, schools and enterprises, is wide in market space, and has high economical added value and social service value.

The invention relates to an overhead cable track and a special track traveling crane thereof, belonging to the transportation technical field. The overhead cable track consists of a lower support system and an upper cable track platform, wherein, the lower support system is fixed on a ground base and the cable track platform is overhung; the cable track platform is a traffic platform composed of an upper track and a lower pre-stressed chord cable; and the track is connected with the chord cable through a plurality of vertical support rods, the whole overhead main body is longitudinally composed of a plurality of span units, and the head and the tail of the pre-stressed chord cable are anchored on the ground by an anchor. The invention further discloses a special track traveling crane which travels on the overhead chord cable, wherein, the track traveling crane is provided with a special wheel disk. In the invention, a cable structure is adopted for supporting transport load, thus the cable structural self-weight can be almost ignored compared with the existing bridge structure, which greatly saves steel and even requires no any concrete; and the track traveling crane can reach thespeed of about 300km / h of a wheel-track train, thus being an efficient, energy-saving and environmental-friendly transportation mode.

The invention belongs to the technical field of aluminum alloy profiles and particularly relates to a manufacturing method for producing an aluminum alloy mechanical arm track girder hollow profile through an aluminum alloy replacing rolled steel. The manufacturing method comprises the steps that firstly, the intensity and the capacity of resistance to deformation of a steel cross beam are evaluated; secondly, the aluminum alloy is selected; thirdly, the structure of the aluminum alloy mechanical arm track girder hollow profile is designed; fourthly, the movement track and deformation of the aluminum alloy mechanical arm track girder hollow profile in a stressed state are simulated through a computer; fifthly, a mould of the aluminum alloy mechanical arm track girder hollow profile is manufactured; sixthly, the aluminum alloy mechanical arm track girder hollow profile is extruded and quenched online; seventhly, the aluminum alloy mechanical arm track girder hollow profile is aged; eighthly, the aluminum alloy mechanical arm track girder hollow profile is sampled; ninthly, the aluminum alloy mechanical arm track girder hollow profile is riveted; and tenthly, the aluminum alloy mechanical arm track girder hollow profile is packaged and delivered, and the aluminum replaces the steel to produce the aluminum alloy mechanical arm track girder hollow profile.

The invention discloses an LED daylight lamp device capable of directly replacing a fluorescent lamp, relating to the technical field of lighting. The LED daylight lamp device structurally comprises an LED light tube and an external LED power supply, wherein two ends of the LED light tube are respectively provided with an end cover in a connecting manner, inner ends of two terminals arranged on the same end cover are in short circuit through a conducing piece, the light tube is provided with a DC input end, the external LED power supply is provided with a starter interface terminal and a DC output end, and the DC output end is detachably and electrically connected with the DC input end through a power wire. The LED power supply can be directly installed on a place of an original starter and matched with an original starter interface, the LED light tube can be directly installed on a place of an original fluorescent lamp, thus any circuit is not changed, the LED power supply and the LED light tube can be rapidly replaced, and the LED daylight lamp device is convenient and practical; and the LED power supply is arranged on the place of the original starter of a lamp panel, because the LED power supply is arranged externally, the LED daylight lamp device has the characteristics of easiness in passing the safety, good quality of emergent light, and the like.

The invention relates to the technical field of optical thin films, in particular to a warping-resistant optical thin film, a preparation method thereof and a display device using the optical thin film, and aims to overcome the defects that a film surface of the conventional diffusion film is easy to warp, and raised grains are generated. The optical thin film comprises a transparent base plate; one side of the transparent base plate is provided with an upper diffusion coating, and the other side of the transparent base plate is provided with a lower diffusion coating; the thickness of the upper diffusion coating is 1 to 50 mu m; and the absolute value of the difference between the thickness of the lower diffusion coating and the upper diffusion coating is less than or equal to 3 mu m. The provided warping-resistant optical thin film has the advantages of the conventional diffusion film; the coatings of the film are low in shrinkage percentage; the warping phenomena can be reduced obviously; the preparation method is simple and easy to operate; and the optical thin film is used as the diffusion film in the display device, a good screen effect can be achieved, and shadows can be avoided.

The invention relates to a heat dissipation device for back light module, which comprises: placing plural parallel projections on a reflection base board, on the top of the projection having a first air through hole, and each top edge of the projection being able to position adjacent to tube light source; on the edge of the reflection board having plural second air through holes, a light shield is provided on the outside of the reflection bottom board for shielding each second air through holes; on the edge frame of the back light module having a flange which is provided with a slot for connecting to the inner space of the back light module, and on the bottom of the slot having a hole going through the flange to form a channel from inside of the back light module to outside; cooling air flow through the back light module is provided via the first, second and the third air through holes to prevent from forming shadow area.

The invention relates to a solar tracking method and particularly relates to a different terrain-adaptive solar tracking method. A solar tracker is provided, and according to the solar tracker, the sun position is accurately calculated based on a modern astronomical algorithm; an equivalent position is designed according to the width of a module, the gap between a front row and a rear row of panel modules and a difference height; and the angle of each panel module is adjusted according to a corresponding calculation formula. According to the different terrain-adaptive solar tracking method, in a condition of not changing the original structure, in the case of terrain complexity and a layout structure with a height difference between the front row and the rear row of photovoltaic modules, no shadows can be ensured to be generated in an east-west direction of the front row and the rear row of photovoltaic modules at any time, maximization of light emission intensity of sun light vertical to the photovoltaic modules is achieved, and the photovoltaic conversion rate is improved. Thus, the technical problem that the solar panel modules are mutually blocked easily to generate shadows in the prior art, receiving of sun light is influenced, and the photovoltaic conversion rate is thus influenced can be solved.

The invention relates to the technical field of optical thin films, in particular to a warping-resistant optical thin film, a preparation method thereof and a display device using the optical thin film, and aims to overcome the defects that a film surface of the conventional diffusion film is easy to warp, and raised grains are generated. The optical thin film comprises a transparent base plate; one side of the transparent base plate is provided with an upper diffusion coating, and the other side of the transparent base plate is provided with a lower diffusion coating; the thickness of the upper diffusion coating is 1 to 50 mu m; and the absolute value of the difference between the thickness of the lower diffusion coating and the upper diffusion coating is less than or equal to 3 mu m. The provided warping-resistant optical thin film has the advantages of the conventional diffusion film; the coatings of the film are low in shrinkage percentage; the warping phenomena can be reduced obviously; the preparation method is simple and easy to operate; and the optical thin film is used as the diffusion film in the display device, a good screen effect can be achieved, and shadows can be avoided.

The invention discloses an energy-saving LED strong light device comprising a base plate, an LED, a light source reflection bowl, a radiator and a translucent lampshade. The energy-saving LED strong light device has the main technical points that connected light source reflection bowl structures are evenly distributed on the convexity of an arc-shaped heat conduction base plate, the inner side of each light source reflection bowl is provided with an LED, the back end part of the LED is connected with the arc-shaped heat conduction base plate, and the edge of the light source reflection bowl structure is convex honeycomb-shaped structure; the radiator is arranged on the concavity of the arc-shaped heat conduction base plate; a power supply driving controller is connected between the LED and the power supply which are connected in series; the power supply driving controller respectively comprises a limited current circuit, a voltage doubling rectifying circuit and a constant current circuit, wherein the voltage doubling rectifying circuit is connected with the output end of the limited current circuit, and the constant current circuit is connected with an output end of the voltage doubling rectifying circuit. As all LEDs in a lamp are connected in series, the constant current circuit provides stable output current for LEDs connected in series, which relatively improves the service life of the LEDs. The invention also has the characteristics of safety, reliability, wide application range and the like.

The invention belong to the technical field of aluminum alloy profile and concretely relates to a manufacturing method for slide rail hollow profile for robot arm movements with aluminum alloy replacing steel. The manufacturing method comprises first, analyzing steel connection member motion and stress conditions, second, selecting aluminum-alloy material, third, designing hollow profile, fourth, simulating aluminum profile connection member motion and stress conditions by a computer to determine whether the hollow profile meets demands, fifth, selecting an extruding machine and designing an aluminum alloy hollow profile connection member via a die, sixth, casting aluminum alloy ingot, seventh, extruding aluminum alloy hollow profile connection member and conducting online quenching, eighth, conducting aluminum alloy hollow profile connection member tension extension and aging treatment, ninth, sampling and checking the aluminum alloy hollow profile connection member, and tenth, hardening and packing the aluminum alloy hollow profile. Motion and stress conditions of the aluminum alloy hollow profile connection member can be simulated by the computer; strength and plasticity meet use requirements; and hollow profile can be manufactured in batches by the use of the method.

The invention relates to a shadowless table lamp with a sitting posture monitoring function. The shadowless table lamp comprises a U-shaped lamp body and a supporting body, wherein a left lamp cap and a right lamp cap are arranged on the U-shaped lamp body, and an LED light source is arranged in each lamp cap; the two lamp caps are arranged above the two sides of a writing area, and the rear ends of the lamp caps (the ends away from a writer) are connected with the two ends of a common connecting body respectively to form the U-shaped lamp body seeing from an overlook viewing angle. The two sides or the rear of the U-shaped lamp body is provided with an environment light filling lamp. An infrared ray emitting diode and an infrared ray receiving diode are arranged at the opposite positions, close to the front ends, of the two lamp caps, the infrared ray emitting diode and the infrared ray receiving diode correspond in position to form an invisible infrared monitoring light beam, when the head of the user is lower than a specified height, the infrared monitoring light beam is cut off, and an infrared ray monitoring alarm circuit will make a sound for reminding. A lamp rod and a writing board serving as a base are used as the supporting body of the U-shaped lamp body, the surface of the writing board does not reflect light, and the writing board tilts forward slightly to facilitate writing.

The invention relates to a shadow-less incision protector. The shadow-less incision protector comprises an outer clamping ring, a channel, an inner clamping ring and an illumination lamp. The outer clamping ring is arranged on one side of the channel, and the inner clamping ring is arranged on the other side of the channel. The channel is made of a silica gel material or a PU material. The inner clamping ring comprises an upper protruding edge portion, a lower protruding edge portion and a concave portion. The upper protruding edge portion is connected to one side of the concave portion, and the lower protruding edge portion is connected to the other side of the concave portion. The illumination lamp is arranged on the inner surface of the concave portion. The shadow-less incision protector has the advantages that the shadow-less incision protector can provide illumination, a surgical field is not affected and the surgical operation difficulty is reduced while a surgical incision is protected, the surgical operation field under the shadow-less incision protector can be clearer, the surgical safety is remarkably improved, and surgical related complications are decreased. The shadow-less incision protector can become a special medial instrument product and has a wide application prospect in clinic popularization.

The invention relates to the field of polyester films, and concretely relates to an anti-scratch coated reflective sheet and a preparation method thereof to solve the problems that a conventional reflective sheet is liable to scratch a light guide plate and shadows are liable to be generated. The anti-scratch coated reflective sheet comprises a reflective sheet and a coating layer arranged on the surface of the reflective sheet. The coating layer comprises an adhesive and organic particles, and the organic particles are bonded to the surface of the reflective sheet through the adhesive. Raw materials of the coating layer are configured to be coating liquid, the coating liquid includes liquid and organic particles, and the liquid includes the adhesive. The weight of the organic particles accounts for 0.5%-15% of the weight of the liquid. The average particle size of the organic particles is 5[mu]m-40[mu]m. The anti-scratch coated reflective sheet can well prevent a light guide plate from being scratched, can well prevent adsorption between the light guide plate and the reflective sheet, and will not generate shadows.

The invention discloses a liquid crystal module and display equipment. The liquid crystal module comprises a module backboard, a supporting member, a diffusion board and a luminous component, and thediffusion board is opposite to the module backboard; the supporting member abuts against the portion between the module backboard and the diffusion board and comprises a supporting part and a bottom plate connected with one end of the supporting part, the end, deviating from the bottom plate, of the supporting part abuts against the diffusion board, the outer side face of the bottom plate is connected with the module backboard, and the inner side face of the bottom plate is a reflecting surface; the luminous component emits light relative to the inner side face of the bottom plate. The liquidcrystal module integrates the supporting member and the luminous component, so that the liquid crystal module is uniform in backlight.

The invention belongs to the technical field of aluminum alloy materials for air separators, in particular to a manufacturing method of a 6A02T651 aluminum alloy seam pipe for a low-temperature oxygen / nitrogen air separator, more particularly to a manufacturing method of a 6A02T651 (phi 411*30) aluminum alloy seam pipe. According to the manufacturing method, online quenching production of an ultralarge-diameter and large-wall-thickness seam pipe material for an air separator is realized; under the condition that the standard requirements are met, the labor productivity is raised, the cost is reduced and the ordering requirements of users are met.

The invention discloses a solar greenhouse for flowering plants in winter in high and cold areas. The solar greenhouse for flowering plants in winter in high and cold areas comprises a cold-proof layer, a front wall, a lighting roof, a peak, a rear roof, a rear brick wall, polystyrene boards, an air vent, a biomass reverse-burning multi-pass low-carbon energy-saving water boiler, a cotton quilt, an electric roller shutter machine, and a sun-shading net rack. Lighting angles of roof positions 0.5m-1.5m, 1.5m-2.5m, 2.5m-3.5m, 3.5m-4.5m, 4.5m-5.5m, 5.5m-6.5m and 6.5m-7.5m away from the front wall inside greenhouse are 53DEG-57DEG, 48DEG-52DEG, 43DEG-47DEG, 38DEG-42DEG, 33DEG-37DEG, 28DEG-32DEG, and 23DEG-27DEG respectively. A vertical line of the peak is 0.5-1.5m away from the inner side of the rear brick wall. The peak is 4.4-4.6m off the indoor floor. The polystyrene boards are disposed in the middle of the rear brick wall. The top of the rear wall has an inner elevation of 63DEG-67DEG apart from the roof. The biomass reverse-burning multi-pass low-carbon energy-saving water boiler is disposed in the greenhouse.

The invention discloses a light-emitting diode (LED) daylight lamp capable of directly replacing a fluorescent lamp, and relates to the technical field of lighting. The LED daylight lamp comprises a tube, end covers, and an external LED power supply; the end covers are arranged on two end parts of the tube; the external LED power supply is electrically connected with the tube; the end covers are respectively provided with two terminals; inner ends of two terminals on the same end cover are in short circuit through a conducive element; and the tube is provided with a direct current (DC) input end. Compared with the prior art, the LED daylight lamp can be directly arranged at the position of the original fluorescent lamp, circuits are not required to be changed, the change can be easily and quickly carried out, and the LED daylight lamp is convenient and practical; the power supply is externally arranged, so that no glare, no shadow and uniform and mild light transmission can be realized; when one end is electrified, the other end is absolutely safe when touched by a hand; the heat of the power supply is dissipated outside the light, the radiating burden of the tube is lightened and the service life of the tube is prolonged; and reclamation cost can be saved and the safety standard is easily met.

The invention discloses a rapidly-assembled lamp. The rapidly-assembled lamp comprises a heat dissipation lamp cup (6), a power source (5), spring buckles (4), a heat dissipation cup (3), a light source (2) and a lens (1). The power source is fixed inside the heat dissipation lamp cup (6) in a buckled manner. The light source (2) is in threaded connection with the lens (1) and then connected withthe power source (5) through the heat dissipation cup (3) in which a through hole is formed. The spring buckles (4) are installed on the outer side of the heat dissipation cup (3), and the heat dissipation cup (3) is fixed inside the heat dissipation lamp cup (6) through the spring buckles (4). A number of cover plate buckles are arranged at the opening of the heat dissipation lamp cup (6). The heat dissipation lamp cup (6) is buckled with the lens (1) through the cover plate buckles. According to the rapidly-assembled lamp, the use is convenient; adaptability is good; and the problems in theprior art that light sources need to be installed on different lamp bodies so that the light sources are used, adaptability is poor, a lamp needs to be replaced when a different lighting effect is applied, and the resources are wasted are solved.

The invention discloses an automatic optical detection equipment which comprises a camera (1), four light sources surrounding the camera (1), a bearing platform (8) below the camera (1) and the light sources, and a computer used for conducting image contrast, wherein the four light sources are annular and are respectively a white annular light source (2), a red annular light source (3), a green annular light source (4) and a blue annular light source (5) which are arranged sequentially from top to bottom; the incident angle of each annular light source is greater than that of the upper adjacent annular light source and smaller than that of the lower adjacent annular light source; and the red annular light source (3) consists of one hundred and seventy light-emitting diodes, and the white annular light source (2) consists of thirty light-emitting diodes. The automatic optical detection equipment has the benefits of high judging accuracy on soldering spots and uneasy misjudgement.

The invention discloses a detection and laser restoration module. The detection and laser restoration module comprises a frame, a laser marking machine, and a vision module; the frame is vertically arranged, and the laser marking machine is arranged at the frame, the vision module is arranged at a front part of the laser marking machine, the vision module comprises a CCD camera, a vision processor, a background light source, and a laser reflector group; the CCD camera is arranged at one side of the laser marking machine and is capable of vertically downwardly taking pictures, the vision processor is connected with the CCD camera, the laser reflector group can be arranged at the front ends of the laser marking machine and the CCD camera, the laser reflector group performs reflection on laser emitted by the laser marking machine, the laser is reflected and presents a vertical downward direction, and the background light source comprises an annular LED lamp. The CCD camera realizes detection on the surface of the product, a white-dot discoloration area is determined through the vision processor, a marking contour is determined, the laser marking is used for restoring the color to bottom color, the simple structure is reasonable, the flexibility is good, the detection restoration efficiency is high, and the production cost is reduced.

The invention discloses a stereo microscope with coaxial lighting effect. The stereo microscope comprises a base, a lighting source, a column fixed on the base and a microscope body connected on the column. The microscope body comprises two zygomorphic optical imaging systems, the optical axis of the left optical imaging system is a first optical axis, the optical axis of the right optical imaging system is a second optical axis, the optical axis of the lighting source is a third optical axis, the lighting source is arranged inside the microscope body, the lighting source comprises an LED lamp and an illuminating lens under the LED lamp; the first optical axis and the second optical axis intersect at the same point on the surface of a specimen, the third optical axis is on the symmetry plane of the first optical axis and the second optical axis; furthermore, the third optical axis intersects with the first optical axis and the second optical axis at the same point on the surface of the specimen. The stereo microscope has the effect of coaxial lighting, is compact in structure, low in manufacturing cost, particularly suitable for deep hole observation and the checking of teeth.

The invention relates to a glareless LED (Light Emitting Diode) indoor lighting device with an intelligent surface light source, which comprises an LED light emitter, a heat-radiating casing, a driving controller and metal rotating shafts, and is characterized in that the LED light emitter is the surface light source; the metal rotating shafts bear both the bending moment and the torque in the rotation and are made of metal material; the driving controller is provided with a power supply which supplies power for the LED light emitter to work in a direct-current state; and the LED light emitter is installed in the heat-radiating casing and is connected with other parts of the LED indoor lighting device through the metal rotating shafts. The glareless LED indoor lighting device with the intelligent surface light source has the benefits that according to the characteristics of the LED surface light source and the adoption of a new electronic thin film material and thin film preparation process, an optical film layer is combined with the LED surface light source; and a direct-current lighting device with the intelligent surface light source, which has the advantages of high efficiency, convenience in implementation, simple manufacturing process, low cost and high cost performance, and has multiple functions, can be made into LED indoor lighting lamps, which adopt various appearance structures and are free of stroboflash, radiation, glare and shadow.

The invention relates to a natural convective device of an indoor LED lamp and a method of the natural convective device. An air inlet flow guide plate and an exhaust flow guide plate are additionallyarranged on two sides of an illuminating cavity. A one-way air inlet valve body is additionally mounted on the outer side the air inlet flow guide plate. An exhaust valve body is additionally mountedon the outer side the exhaust flow guide plate. Flow guide plate air inlets are formed in the bottoms of the air inlet flow guide plates. Flow guide exhaust holes are formed in the bottoms of the exhaust flow guide plates. The flow guide exhaust holes are greater than the flow guide plate air inlets. The temperature of the illuminating cavity rises, hot air resistance of the flow guide exhaust holes is little, hot air enters an exhaust cavity quickly, and the illuminating cavity is relatively vacuum temporarily. Air in an air inlet cavity quickly enters the illuminating cavity through the flow guide plate air inlets due to pressure difference, and the air inlet cavity is relatively vacuum. The one-way air inlet valve body is opened under action of atmospheric pressure, and external cold air enters the air inlet cavity in a supplement mode. The hot air continuously enters the exhaust cavity, so that air pressure increases continuously. When the pressure is greater than the atmosphericpressure, the exhaust valve body is opened, and the hot air in the exhaust cavity is discharged into the atmosphere.

The invention discloses a lambency grating structure of a fluorescent lamp and a fluorescent lamp using the same. The fluorescent lamp provided by the invention comprises a fluorescent lamp tube and a lambency grating arranged on a ray path of the fluorescent lamp tube, and is characterized in that the lambency grating is made of light transmitting materials, the lambency grating comprises a plurality of transverse grating plates vertical to the fluorescent lamp tube and at least one longitudinal grating plate, and the transverse grating plates and the longitudinal grating plate are arranged in a staggered mode. The lambency grating structure provided by the invention can ensure that rays emitted by the fluorescent lamp are soft and uniform, thus achieving a favorable lambency effect.

The invention discloses a sheet metal part detection device and relates to the field of sheet metal part detection equipment. The sheet metal part detection device comprises a transmission rack. The transmission rack is rotatably provided with a conveyer belt. The conveyer belt is in drive connection with a driving motor. An image acquisition device is arranged above the transmission rack. The image acquisition device is electrically connected with a controller. The driving motor is in controlled connection with a controller. The controller is also electrically connected with a display screen.In order to solve the problem of low efficiency and accuracy in the prior art, the device detects punched holes in sheet metal parts through the image acquisition device and the controller, thereby greatly improving efficiency and accuracy in detecting the punched holes in the sheet metal parts.