CN109737363B - Natural convection device and method for indoor LED lamp - Google Patents
Natural convection device and method for indoor LED lamp Download PDFInfo
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- CN109737363B CN109737363B CN201811557380.3A CN201811557380A CN109737363B CN 109737363 B CN109737363 B CN 109737363B CN 201811557380 A CN201811557380 A CN 201811557380A CN 109737363 B CN109737363 B CN 109737363B
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Abstract
The invention relates to a natural convection device and a method of an indoor LED lamp. The bottom of the air inlet guide plate is provided with a guide plate air inlet, the bottom of the exhaust guide plate is provided with a guide plate exhaust hole, and the guide plate exhaust hole is larger than the guide plate air inlet. The temperature of the light-emitting cavity rises, the hot air resistance of the exhaust hole of the guide plate is small, the hot air rapidly enters the exhaust cavity, the light-emitting cavity forms temporary relative vacuum, the air in the air inlet cavity rapidly enters the light-emitting cavity through the air inlet hole of the guide plate due to pressure difference, the air inlet cavity forms relative vacuum, the one-way air inlet valve body is opened under the action of atmospheric pressure, and the external cold air is rapidly supplemented to the air inlet cavity; the air pressure of the exhaust cavity is continuously increased due to the continuous inflow of hot air, and when the pressure is greater than the atmospheric pressure, the exhaust valve body is opened, and the hot air in the exhaust cavity is exhausted into the atmosphere.
Description
Technical Field
The invention relates to a natural convection device and a natural convection method for an indoor LED lamp, and belongs to the technical field of indoor LED lamp design.
Background
LED lighting emitting diode (hereinafter referred to as LED) is a solid semiconductor device capable of converting electric energy into visible light, converting electricity into light directly, and has the features of small size, low power consumption, long service life, high brightness, low heat, environment friendliness, durability, etc. With the increasing global energy crisis, energy conservation and environmental protection are the direction of future industrial development. The lighting industry has also transitioned from conventional incandescent and fluorescent lamp technology to the field of LED lighting technology.
The permeability of the LED lighting application in China in 2017 reaches 65%. The continuous deepening of LED lighting technology has brought about a further subdivision of the field of lighting applications. Lighting for indoor use has been subdivided into home lighting, commercial lighting, office lighting, supermarket lighting, sports lighting, and the like. In the office lighting field, the LED film lamp has become a new favorite in the field because of the advantages of soft light, low UGR index, no glare, no shadow on the irradiated surface and the like.
The structure of the existing LED lamp mainly comprises a lamp body (metal plate), a light-emitting piece of an LED lamp bead, a diffusion plate (plastic), a sealing shock pad and the like. All technical designs are mainly focused on: appearance, optical parameters, electrical parameters, packaging and the like. The LED lamp bead is a solid-state light-emitting diode capable of converting electric energy into visible light, but the photoelectric conversion efficiency is only about 35%, and 65% of electric energy is converted into heat energy. Along with the rising of the heat sink temperature of the LED lamp beads, the efficiency of electro-optic conversion can be reduced, and the luminous flux of the whole lamp can be reduced. The heat dissipation of the conventional lamp has two heat dissipation channels: the heat energy of the heat sink part of the LED lamp bead can be conducted to the metal lamp body through metal conduction; the heat radiation of heat energy, the heat of lamp pearl, lamp body can improve the air temperature of the luminous cavity of lamps and lanterns rapidly through the radiation.
The drawbacks of the conventional lamp are represented by: the difference between the instant luminous flux measured in the cold state (25 degrees) and the luminous flux measured in the heat balance (75 degrees) is large, the steady-state luminous flux is low, and the illumination deviation is large. And the light attenuation of the lamp bead is large due to the defects of the heat dissipation design. The diffusion plate is deformed; when the protection grade of the lamp is about IP20, because the sealing performance of the light-emitting cavity of the lamp is low, the gas pressure of the air in the cavity after being heated and expanded is higher than the atmospheric pressure, the air in the cavity is discharged through the gap, so that the air pressure in the light-emitting cavity of the lamp is reduced to form relative vacuum, and under the action of the atmospheric pressure, the diffusion plate forms a depression, so that the uniformity of the light-emitting surface is reduced, and the defects of light spots, dew points and the like are presented. When the protection grade of the lamp is above IP40, because the sealing performance of the light-emitting cavity of the lamp is good, the gas pressure of the air in the cavity after being heated and expanded is higher than the atmospheric pressure, the air in the cavity cannot be discharged, and the diffusion plate forms a convex protrusion under the action of the hot air pressure of the cavity. The wall of the light-emitting cavity in the lamp body structure is of a vertical structure, light with a beam angle of 120 degrees is irradiated to the wall of the cavity and then refracted, black edges are easy to form around the diffusion plate, and the light-emitting surface uniformity of the whole lamp is low.
The heat transfer has three heat exchange modes of conduction, radiation and convection. Heat conduction refers to the heat transfer of different parts in an object due to temperature difference or the heat transfer of two objects with different temperatures due to direct contact, and is the most direct and common heat dissipation method. The heat sink of the LED lamp bead in the lamp transfers heat to the lamp body through direct contact between the substrate and the lamp body, which is a typical application of conduction.
The radiation refers to heat exchange between two objects or media which are not in contact with each other and have different temperatures through electromagnetic waves, the heat exchange effect depends on the temperature difference between the objects or the media, and the larger the Delta T is, the higher the radiation heat exchange efficiency is. The radiator is the temperature difference of the air in the surface of the LED lamp bead and the luminous cavity on the existing lamp, the temperature difference of the surface of the lamp body and the air, and after heat balance, radiation between the LED lamp bead and the air in the luminous cavity loses effect due to no temperature difference.
Convection refers to the heat transfer mode combining convection and conduction when a fluid is in contact with a surface of an object at different temperatures. The convection heat exchange is divided into forced convection heat exchange and natural convection heat exchange according to the difference of the causes of the fluid, wherein the forced convection heat exchange is caused by a fan or other external power sources, and the natural convection heat exchange is carried out by utilizing the shoveled buoyancy force as the power of the fluid motion due to the uneven density field caused by the non-uniformity of the temperature field of the fluid.
Disclosure of Invention
The invention provides a natural convection device and a natural convection method for an indoor LED lamp, aiming at the defects of the prior art.
The invention aims to realize the natural convection device of the indoor LED lamp, which comprises a bottom plate and a light-emitting component arranged on the inner side of the bottom plate, wherein a light-transmitting diffusion plate covers the bottom plate, a light-emitting cavity is formed between the bottom plate and the light-transmitting diffusion plate, the light-emitting component is arranged in the light-emitting cavity between the bottom plate and the light-transmitting diffusion plate, and the light-emitting component is fixed on the bottom plate; a light reflecting component is arranged in the light emitting cavity and is positioned on the inner wall of the periphery of the bottom plate;
the method is characterized in that: the two ends of the bottom plate are provided with an upper head cover and a lower head cover, and the upper head cover and the lower head cover are respectively provided with a one-way air inlet valve body and a one-way air outlet valve body;
the one-way air inlet valve body comprises an air inlet valve cover, an air inlet silica gel sheet and an air inlet valve base, wherein an air inlet hole is formed in the upper head cover, the air inlet valve base is arranged on the outer side of the upper head cover, the air inlet valve cover is arranged on the inner side of the upper head cover, the air inlet valve base is clamped on the air inlet hole, the outer side of the air inlet valve base is sealed with the air inlet hole, air cannot penetrate through the contact position of the air inlet valve base and the air inlet hole, and the air inlet; the air inlet valve base is internally provided with a baffle plate, the baffle plate and the inner wall of the bottom of the air inlet valve base form an air inlet cavity of the air inlet valve base, an air inlet side wall hole is formed in the side wall between the baffle plate and the bottom of the air inlet valve base, a first air inlet valve cover column is arranged in the center of one surface, facing the air inlet valve cover, of the baffle plate, and a plurality of baffle plate air inlet holes are formed in the baffle; the cover bottom of the air inlet valve cover is provided with a plurality of valve cover air inlets, the cover bottom of the air inlet valve cover is also provided with a second air inlet valve cover column, and the first air inlet valve cover column and the second air inlet valve cover column are concentrically arranged; when the air inlet valve base and the air inlet valve cover are connected in a buckling fit mode, the first air inlet valve cover column and the second air inlet valve cover column are combined to form the air inlet valve cover column, an air inlet silica gel sheet sleeving hole is formed in the center of the air inlet silica gel sheet, the air inlet silica gel sheet sleeving hole of the air inlet silica gel sheet is sleeved on the air inlet valve cover column, the air inlet silica gel sheet can move along the air inlet valve cover column, the outer diameter of the air inlet silica gel sheet is smaller than the inner diameter of the air inlet valve cover, the air inlet silica gel sheet cannot completely seal a plurality of valve cover air inlet holes in the bottom of the air inlet valve cover, and when the air inlet;
the one-way air outlet valve body comprises an air outlet valve base, an air outlet silica gel sheet and an air outlet valve cover, an air outlet hole is formed in the lower head cover, the air outlet valve base is arranged on the inner side of the lower head cover, the air outlet valve cover is arranged on the outer side of the lower head cover, the air outlet valve base is clamped on the air outlet hole, the outer side of the air outlet valve base is sealed with the air outlet hole, air cannot pass through the contact position of the air outlet valve base and the air outlet hole, and the air outlet valve base and the air outlet valve cover are connected in a buckling; the air outlet valve base is provided with a plurality of base air outlet holes, and a first air outlet valve cover column is arranged in the center of one surface of the air outlet valve base, which faces the air outlet valve cover; a plurality of valve cover air outlet holes are formed in the side wall of the air outlet valve cover, a second air outlet valve cover column is further arranged on one surface, facing the air outlet valve base, of the air outlet valve cover, and the first air outlet valve cover column and the second air outlet valve cover column are concentrically arranged; when the air outlet valve base and the air outlet valve cover are connected in a buckling fit mode, the first air outlet valve cover column and the second air outlet valve cover column are combined to form the air outlet valve cover column, an air outlet silica gel sheet sleeve hole is formed in the center of the air outlet silica gel sheet, the air outlet silica gel sheet sleeve hole of the air outlet silica gel sheet is sleeved on the air outlet valve cover column, the air outlet silica gel sheet can move along the air outlet valve cover column, when the air outlet silica gel sheet is attached to the air outlet valve base, the air outlet silica gel sheet seals a plurality of base air outlet holes in the air outlet valve base, and when the air outlet silica gel sheet is attached to the air outlet valve cover, a plurality of valve cover air outlet holes;
the reflecting assembly comprises an exhaust guide plate, an air inlet guide plate, a first reflecting plate and a second reflecting plate, the exhaust guide plate and the air inlet guide plate are arranged oppositely, the first reflecting plate and the second reflecting plate are arranged at two ends of the exhaust guide plate and the air inlet guide plate, and the exhaust guide plate, the air inlet guide plate, the first reflecting plate and the second reflecting plate are clamped into a whole through a buckle;
the exhaust guide plate is arranged on one side of the lower head cover facing the light-emitting cavity, an exhaust cavity is formed between the exhaust guide plate and the lower head cover, and a plurality of guide plate exhaust holes are uniformly formed in the bottom of the exhaust guide plate; the air inlet guide plate is arranged on one side of the upper head cover facing the light-emitting cavity, an air inlet cavity is formed between the air inlet guide plate and the upper head cover, and a plurality of guide plate air inlet holes are uniformly formed in the bottom of the air inlet guide plate; the aperture of the exhaust hole of the guide plate on the exhaust guide plate is larger than that of the air inlet hole of the guide plate on the air inlet guide plate;
the air in the luminous cavity enters the exhaust cavity through a plurality of guide plate exhaust holes at the bottom of the exhaust guide plate and is exhausted through the one-way air outlet valve body on the lower head cover; the outside air enters the air inlet cavity through the one-way air inlet valve body and enters the light-emitting cavity through a plurality of air inlet holes of the guide plate at the bottom of the air inlet guide plate;
when air in the air inlet cavity flows towards the air inlet valve base through the air inlet hole of the upper valve cover of the air inlet valve cover, the air inlet silica gel sheet is pressed to move towards the air inlet valve base along the air inlet valve cover column and tightly pressed on the baffle of the air inlet valve base, the air inlet silica gel sheet seals the air inlet hole of the baffle, and the air cannot flow out of the air inlet cavity through the air inlet valve base; when the air pressure in the air inlet cavity is smaller than the atmospheric pressure, the external air flows to the air inlet cavity of the air inlet valve base through the air inlet side wall hole of the air inlet valve base and flows to the air inlet valve cover through the air inlet holes of the baffle plate, the air inlet silica gel sheet moves to the air inlet valve cover along the air inlet valve cover column under the pressure, an annular gap is formed between the air inlet silica gel sheet and the side wall of the air inlet valve cover, and the external air flows into the air inlet cavity through the annular gap and the air inlet holes;
when air in the exhaust cavity flows to the exhaust valve cover through a plurality of base air outlet holes of the air outlet valve base, the air outlet silicone sheet moves towards the air outlet valve cover along the air outlet valve cover column, the air outlet silicone sheet is separated from the air outlet valve base and attached to the cover bottom of the air outlet valve cover, and at the moment, the air is exhausted from a plurality of valve cover air outlet holes on the side wall of the air outlet valve cover to the exhaust cavity; when external air flows to the direction of the air outlet valve base through the air outlet holes of the valve covers on the side walls of the air outlet valve covers, the air outlet silica gel sheet is pressed to move towards the air outlet valve base, the air outlet silica gel sheet is tightly attached to the plane of the air outlet valve base after being pressed, the larger the pressure is, the tighter the attachment is, the air outlet silica gel sheet seals the air outlet holes of the bases on the air outlet valve base, so that a flow channel of the air is blocked, and the external air cannot flow into the exhaust cavity through the air outlet valve base.
The light-emitting component comprises LED light-emitting lamp beads, a printed circuit board and a connecting wire, the LED light-emitting lamp beads are arranged on the printed circuit board and are electrically connected with the printed circuit board, and the printed circuit board is externally connected with a power supply through the connecting wire.
The air inlet silica gel sheet can move 0.2mm along the air inlet valve cover column; the air outlet silica gel sheet can move 0.2mm along the air outlet valve cover column.
An EVA (ethylene vinyl acetate copolymer) sealing damping assembly is arranged between the bottom plate and the light transmission diffusion plate and comprises a first double-sided adhesive EVA sealing damping strip, a second double-sided adhesive EVA sealing damping strip, a third double-sided adhesive EVA sealing damping strip and a fourth double-sided adhesive EVA sealing damping strip, the EVA sealing damping assembly comprises the first double-sided adhesive EVA sealing damping strip, the second double-sided adhesive EVA sealing damping strip, the third double-sided adhesive EVA sealing damping strip and the fourth double-sided adhesive EVA sealing damping strip, two opposite sides of the bottom plate and the light transmission diffusion plate are respectively precoated with an adhesive, and four sides of the bottom plate, which are attached to the light transmission diffusion plate, are respectively fixed through the first double-sided adhesive EVA sealing damping strip, the second double-sided adhesive EVA sealing damping strip, the third double-sided adhesive EVA sealing damping strip and the fourth double-sided adhesive EVA sealing damping strip;
the thickness of the light-transmitting diffusion plate is 0.6-3mm, a fixed frame is fixed on the periphery of the light-transmitting diffusion plate, and the fixed frame is composed of 4 sheet metal parts fixed by welding and used for fixing the light-transmitting diffusion plate.
The exhaust guide plate, the air inlet guide plate, the first reflection plate and the second reflection plate are all made of high-reflectivity non-metallic materials.
A method for natural convection of a natural convection device of an indoor LED lamp is characterized by comprising the following steps:
after the indoor LED lamp is lighted, the light-emitting component is lighted to generate heat, and the air temperature in the light-emitting cavity between the bottom plate and the light-transmitting diffusion plate rises; because the aperture of the vent hole of the guide plate on the exhaust guide plate is larger than the aperture of the air inlet hole of the guide plate on the air inlet guide plate, the resistance of the hot air in the luminous cavity on the exhaust guide plate vent hole is smaller than the resistance of the air inlet hole of the guide plate on the air inlet guide plate, and the hot air in the luminous cavity rapidly enters the exhaust cavity through the vent hole of the guide plate on the exhaust guide plate and flows to the air outlet valve cover through the base air outlet hole of the air outlet valve base; at the moment, when hot air in the exhaust cavity flows to the exhaust valve cover through the base air outlet hole of the air outlet valve base, the air outlet silica gel sheet moves to the exhaust valve cover along the air outlet valve cover column, the air outlet silica gel sheet is separated from the air outlet valve base, the air outlet silica gel sheet is attached to the cover bottom of the exhaust valve cover, and at the moment, the air is exhausted from a plurality of valve cover air outlet holes on the side wall of the exhaust valve cover;
when hot air in the luminous cavity enters the exhaust cavity through the exhaust holes of the guide plate on the exhaust guide plate, the luminous cavity forms temporary relative vacuum; air in the air inlet cavity between the air inlet guide plate and the upper head cover rapidly enters the light-emitting cavity through the air inlet hole of the air inlet guide plate on the air inlet guide plate due to pressure difference, the air inlet cavity forms relative vacuum, and at the moment, the air pressure of the air inlet cavity is smaller than the external atmospheric pressure;
when the air pressure of the air inlet cavity is smaller than the external atmospheric pressure, external air flows to the air inlet cavity of the air inlet valve base through the air inlet side wall hole of the air inlet valve base and flows to the air inlet valve cover through the air inlet holes of the baffle plate, the air inlet silica gel sheet moves to the air inlet valve cover along the air inlet valve cover column under the pressure, an annular gap is formed between the air inlet silica gel sheet and the side wall of the air inlet valve cover, and the external air flows into the air inlet cavity through the annular gap and the air inlet holes of the;
through the continuous circulation, the hot air continuously enters the exhaust cavity through the exhaust holes of the guide plate on the exhaust guide plate and is exhausted through the one-way air outlet valve body; the external cold air continuously enters the air inlet cavity through the one-way air inlet valve body and enters the light-emitting cavity through the air inlet hole of the air guide plate on the air inlet guide plate; the natural convection cooling in the luminous cavity is realized.
The invention has reasonable structure, easy production and manufacture and convenient use, and the structure is technically innovated according to the thermodynamics and aerodynamics principles, thereby increasing the convection heat dissipation channel. The invention is different from the conventional method in that an air inlet guide plate and an air outlet guide plate are respectively arranged on two sides of a luminous cavity, a one-way air inlet valve body is additionally arranged on the outer side of the air inlet guide plate, and an air outlet valve body is additionally arranged on the outer side of the air outlet guide plate. The bottom of the air inlet guide plate is provided with a plurality of guide plate air inlet holes, the bottom of the exhaust guide plate is provided with a plurality of guide plate exhaust holes, and the guide plate exhaust holes are larger than the guide plate air inlet holes, so that a bilateral asymmetric structure is formed in the luminous cavity.
After the lamp is lighted, the temperature of the light-emitting cavity rises, because of an asymmetric structure, the air exhaust hole of the guide plate is larger than the air inlet hole of the guide plate, the fluid (hot air) resistance of the air exhaust hole of the guide plate is small, the hot air of the light-emitting cavity rapidly enters the air exhaust cavity, the light-emitting cavity forms temporary relative vacuum, the air in the air inlet cavity rapidly enters the light-emitting cavity through the air inlet hole of the guide plate due to pressure difference, the air inlet cavity forms relative vacuum, at the moment, the air pressure in the air inlet cavity is smaller than the atmospheric pressure, the one-way air inlet valve body is opened under the; the air pressure of the exhaust cavity is continuously increased due to the continuous inrush of hot air, and when the pressure is greater than atmospheric pressure, the exhaust valve body is opened, and the hot air in the exhaust cavity is exhausted into the atmosphere. Through constantly surging and discharging of foretell air, the continuous circulation produces natural convection at the inside lamps and lanterns to reduce luminous cavity's temperature, make luminous cavity's temperature tend to the normal atmospheric temperature, the effectual temperature that reduces LED lamp pearl.
The invention provides a structure for natural convection of a natural convection device of an indoor LED lamp, which comprises a light-emitting component, a flow-guiding light-reflecting component, an LED light-emitting lamp bead component, an EVA sealing and shock-absorbing component, a light-transmitting diffusion component, a film frame component, a one-way air inlet valve component and a one-way air outlet valve component.
The lamp body component comprises a bottom plate, the bottom plate is made of carbon steel, an upper end cover and a lower end cover (made of carbon steel) are welded at the two ends of the bottom plate, a square carbon steel lamp body component is formed, and the surface of the square carbon steel lamp body component is subjected to plastic spraying treatment.
The reflecting assembly comprises an exhaust guide plate, an air inlet guide plate, a first reflecting plate and a second reflecting plate which are clamped into a whole in a buckling mode.
A plurality of guide plate exhaust holes are uniformly formed in the bottom of the exhaust guide plate, the guide plate exhaust holes are made of high-reflectivity non-metallic materials, and hot air enters the exhaust cavity from the light-emitting cavity through the guide plate exhaust holes in the bottom while reflecting light; the air inlet guide plate and the air outlet guide plate are made of the same material, a plurality of guide plate air inlet holes are uniformly formed in the bottom of the air inlet guide plate, the guide plate air inlet holes are opposite to the guide plate air outlet holes, the size of the holes is small, the holes are used as reflected light, and cold air in the air inlet cavity flows into the light emitting cavity through the guide plate air inlet holes; the first reflecting plate and the second reflecting plate are made of the same material as the air guide plate and the air inlet guide plate and have the function of light reflection. When the air guide plate and the air inlet guide plate are installed, the air guide plate and the air inlet guide plate are installed oppositely, and the first reflection plate and the second reflection plate are clamped on the other two sides.
The LED light-emitting component consists of LED lamp beads, a printed circuit board and a connecting wire.
The EVA sealing and damping assembly is composed of a first double-sided adhesive EVA sealing and damping strip, a second double-sided adhesive EVA sealing and damping strip, a third double-sided adhesive EVA sealing and damping strip and a fourth double-sided adhesive EVA sealing and damping strip which are made of the same material, and the two opposite sides of each component are precoated with an adhesive. The lamp body is sealed, damped, attached to the surface (bottom plate) of the lamp body and the surface of the diffusion plate and back-glued for fixing.
The light-transmitting diffusion component is a fixed-length nonmetal light diffusion plate (light-transmitting diffusion plate) with the thickness of 0.6-3 mm. The light diffusion function is the light diffusion function, and the light diffusion function is the light emitting surface of the lamp, and the material is brittle and easy to break. The lower part is therefore damped. The film frame assembly frame is formed by welding 4 sheet metal parts, and the surface of the film frame assembly frame is subjected to plastic spraying treatment, so that the film frame assembly frame has the function of fixing the light-transmitting diffusion plate.
The one-way air inlet valve body assembly comprises three parts, namely an air inlet valve base, an air inlet valve cover and an air inlet silica gel sheet. The air inlet valve base and the air inlet valve cover are made of non-metal materials and are matched through buckles, and the air inlet silica gel sheet is clamped in the valve cover of the air inlet valve cover through a structure. The one-way air inlet valve body is a one-way valve, when air in the air inlet cavity flows to the direction of the air inlet valve base through the air inlet hole of the upper valve cover of the air inlet valve cover, the air inlet silica gel sheet is pressed to move to the air inlet valve base along the air inlet valve cover column and tightly pressed on the baffle of the air inlet valve base, the air inlet silica gel sheet seals the air inlet hole of the baffle, and the air cannot flow out of the air inlet cavity through the air inlet valve base; when the air pressure in the air inlet cavity is smaller than the atmospheric pressure, the external air flows to the air inlet cavity of the air inlet valve base through the air inlet side wall hole of the air inlet valve base and flows to the air inlet valve cover through the air inlet holes of the baffle plate, the air inlet silica gel sheet moves to the air inlet valve cover along the air inlet valve cover column under the pressure, an annular gap is formed between the air inlet silica gel sheet and the side wall of the air inlet valve cover, and the external air flows into the air inlet cavity through the annular gap and the air inlet holes;
the moving distance of the air inlet silica gel sheet is only 0.2mm, so that fluid with a large molecular structure cannot pass through the valve body. The function of the one-way air inlet valve body on the lamp is as follows: 1) when the pressure of the luminous cavity is lower than the atmospheric pressure, the silica gel valve film (air inlet silica gel sheet) is pressed to move and deform to form an annular gap, and the air outside the lamp body can rapidly rush into the luminous cavity; 2) the moving distance of the air inlet silica gel sheet is small, so that mosquitoes, PM2.5 haze and the like can not enter the light-emitting cavity; 3) and the material of the one-way air inlet valve body can be completely hydrophobic, and liquid can not enter the light-emitting cavity (without direct spraying). This structure is applicable to all lamps and lanterns below protection level IP 54.
The one-way air outlet valve body also comprises three parts: the air outlet valve comprises an air outlet valve base, an air outlet silica gel sheet and an air outlet valve cover, wherein the air outlet valve base and the air outlet valve cover are made of nonmetal materials, and the valve membrane material silica gel (the air outlet silica gel sheet) is clamped on a middle shaft (an air outlet valve cover column) of the air outlet valve base through a structure in a buckling assembly mode. Can move 0.2mm in the axial direction.
The air outlet valve is a one-way valve, fluid flows in from the direction of the valve seat, the air outlet silica gel sheet is pressed to move 0.2mm along the axial direction, the air outlet silica gel sheet is separated from the surface of the air outlet valve base to form an annular gap of 0.2mm, and the fluid passes through the gap; on the contrary, the fluid flows into from the gas outlet valve cover and presses the gas outlet silica gel sheet, the gas outlet silica gel sheet is pressed and then clings to the plane of the gas outlet valve base, the larger the pressure is, the more tightly the clings to the gas outlet silica gel sheet, and therefore the flow channel of the fluid is blocked. The lamp is characterized in that hot air in the light-emitting cavity enters the exhaust cavity, the air outlet silica gel sheet moves and deforms after the static pressure of the hot air in the exhaust cavity is greater than the atmospheric pressure, and the hot air is exhausted out of the lamp through the exhaust valve. The exhaust valve has the functions of: 1) the air outside the lamp is blocked from flowing into the light-emitting cavity, so that the hot air in the lamp flows in order and in the same direction without generating turbulent flow; 2) the one-way valve only can not enter the lamp, and external mosquitoes, PM2.5 haze, fluid and the like can not enter the lamp; 3) the one-way air inlet valve body is matched with the one-way air inlet valve body and is respectively arranged on the opposite corners (surfaces) of the lamp, so that air in the lamp flows orderly according to the designed direction after being heated, and efficient convection heat conduction is formed. This structure is applicable to all lamps and lanterns below protection level IP 54.
When mounting, firstly, 2 head covers (upper head cover and lower head cover) are welded to two ends of the bottom plate, and surface treatment plastic spraying is carried out. Then the one-way air inlet valve body and the one-way air outlet valve body are respectively arranged on the openings of the upper head cover and the lower head cover, the two valve bodies (the one-way air inlet valve body and the one-way air outlet valve body) are opposite in position, the LED light-emitting lamp bead assembly is fixed on the plane of the bottom plate, and the assemblies are connected through a connecting wire. Then the clamped light reflecting assembly is arranged in the lamp body, the periphery of the lamp body is glued and fixed along the edge of the lamp body, the guide light emitting plate with a large opening faces the exhaust valve body, the EVA sealing shock absorption assembly is arranged in the lamp body, the light transmission diffusion plate is arranged in an aligned mode, and the assembly is completed after the film frame is clamped.
In conclusion, the product of the invention is characterized in that:
1) the lamp body is provided with a heat conduction channel for natural convection, and compared with a heat conduction channel for conduction and radiation of a conventional lamp, the lamp has heat conduction modes of three forms of conduction, radiation and convection.
2) And the asymmetrical structural design of the flow guide reflecting plate (the exhaust guide plate and the air inlet guide plate) ensures that the hot air after the interior of the lamp body is lightened can flow in the same direction in order. The influence of the disordered turbulence of the fluid on the flow speed of the hot air is avoided, so that the heat exchange efficiency of convection is reduced.
3) The application of the diversion reflector (the exhaust guide plate and the air inlet guide plate) firstly effectively improves the light-emitting efficiency of the lamp, secondly separates a cavity structure inside the lamp body into three cavity structures (comprising a light-emitting cavity, an air inlet cavity and an air outlet cavity), and provides a prerequisite for the convection of hot air.
The invention has the following advantages:
1) and as the light-emitting cavity can be continuously cooled, the light-transmitting diffusion plate of the lamp is not deformed and is flat like a mirror.
2) The working environment of the LED light-emitting lamp bead tends to normal temperature, and the light flux maintenance time of the lamp is longer and is more than 2 times of that of the conventional lamp. The life of the lamp is longer.
3) And the light attenuation of the lamp is small. The difference between the initial luminous flux and the steady-state luminous flux is small, and higher illumination requirements are provided.
4) The light is emitted uniformly without light spots, shadows and black edges. The light efficiency is higher than that of the conventional lamp by more than 10%.
5) The LED lamp beads have the advantages that the LED lamp beads are excellent in heat dissipation design, the light emitting efficiency of the LED lamp beads can be effectively improved, the number of the lamp beads is reduced, the cost of products is reduced, and the cost performance of the products is improved.
6) The range of the LED lamp beads suitable for the lamp is improved, and the LED lamp beads with medium and high power can be completely used for the lamp.
The invention is suitable for all lamps with independent light-emitting cavities in the room, including indoor down lamps, spot lamps, ceiling lamps, bulb lamps, T5/T8 lamp tubes and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a one-way air outlet valve body part in the invention.
Fig. 3 is a schematic view of the intake valve base of the one-way exhaust valve body according to the present invention.
Fig. 4 is an enlarged schematic view of the structure at the position I in fig. 3.
Fig. 5 is an enlarged schematic view of fig. 3 at III.
Fig. 6 is a schematic structural view of a one-way air outlet valve body part in the invention.
Fig. 7 is a schematic structural view of an air outlet valve cover and an air outlet silica gel sheet of the one-way air outlet valve body.
Fig. 8 is a schematic structural view of an exhaust guide plate portion according to the present invention.
Fig. 9 is a schematic structural view of an intake baffle portion of the present invention.
Fig. 10 is a schematic structural view of a first reflection plate portion in the present invention.
Fig. 11 is a schematic diagram of the present invention.
In the figure: 1 bottom plate, 2 upper end cover, 3 lower end cover, 4LED light-emitting lamp beads, 5 exhaust guide plate, 6 air inlet guide plate, 7 first reflection plate, 8 second reflection plate, 9 first double-sided adhesive EVA sealing shock absorption strip, 10 second double-sided adhesive EVA sealing shock absorption strip, 11 third double-sided adhesive EVA sealing shock absorption strip, 12 fourth double-sided adhesive EVA sealing shock absorption strip, 13 light-transmitting diffusion plate, 14 fixing frame, 15 air inlet valve cover, 15-1 valve cover air inlet hole, 15-2 second air inlet valve cover column, 16 air inlet silica gel sheet, 16-1 air inlet silica gel sheet sleeve hole, 17 air inlet valve base, 17-1 baffle, 17-2 first air inlet valve cover column, 17-3 air inlet side wall hole, 17-4 baffle air inlet hole, 18 air outlet silica gel sheet, 18-1 air outlet silica gel sleeve hole, 19 air outlet valve base, 19-1 base air outlet hole, 19-2 first air outlet valve cover column, 17-3 air inlet side wall hole, 17-4 baffle air inlet hole, 18 air outlet silica gel sheet, 20 air outlet valve covers, 20-1 valve cover air outlet holes, 20-2 second air outlet valve cover columns, 21 air inlet holes, 22 air outlet holes, 23 one-way air inlet valve bodies and 24 one-way air outlet valve bodies.
Detailed Description
The invention is further described with reference to the accompanying drawings and the description thereof.
A natural convection device of an indoor LED lamp comprises a bottom plate 1 and a light-emitting component arranged on the inner side of the bottom plate 1, wherein a light-transmitting diffusion plate 13 covers the bottom plate 1, a light-emitting cavity is formed between the bottom plate 1 and the light-transmitting diffusion plate 13, the light-emitting component is arranged in the light-emitting cavity between the bottom plate 1 and the light-transmitting diffusion plate 13, and the light-emitting component is fixed on the bottom plate 1; a light reflecting component is arranged in the light emitting cavity and is positioned on the inner wall of the periphery of the bottom plate 1.
An upper head cover 2 and a lower head cover 3 are arranged at two ends of the bottom plate 1, and a one-way air inlet valve body 23 and a one-way air outlet valve body 24 are respectively arranged on the upper head cover 2 and the lower head cover 3.
The one-way air inlet valve body comprises an air inlet valve cover 15, an air inlet silica gel sheet 16 and an air inlet valve base 17, wherein an air inlet hole 21 is formed in the upper head cover 2, the air inlet valve base 17 is arranged on the outer side of the upper head cover 2, the air inlet valve cover 15 is arranged on the inner side of the upper head cover 2, the air inlet valve base 17 is clamped on the air inlet hole 21, and the air inlet valve base 17 is connected with the air inlet valve cover 15 in a snap fit manner; a baffle plate 17-1 is arranged in the air inlet valve base 17, an air inlet valve base air inlet cavity is formed by the baffle plate 17-1 and the inner wall of the bottom of the air inlet valve base 17, an air inlet side wall hole 17-3 is arranged on the side wall between the baffle plate 17-1 and the bottom of the air inlet valve base 17, a first air inlet valve cover column 17-2 is arranged in the center of one surface of the baffle plate 17-1 facing the air inlet valve cover 15, and a plurality of baffle plate air inlet holes 17-4 are also arranged on the baffle plate 17-1; the cover bottom of the air inlet valve cover 15 is provided with a plurality of valve cover air inlets 15-1, the cover bottom of the air inlet valve cover 15 is also provided with a second air inlet valve cover column 15-2, and the first air inlet valve cover column 17-2 and the second air inlet valve cover column 15-2 are concentrically arranged; when the air inlet valve base 17 and the air inlet valve cover 15 are connected in a buckling fit mode, the first air inlet valve cover column 17-2 and the second air inlet valve cover column 15-2 are combined together to form the air inlet valve cover column, an air inlet silica gel sheet sleeve hole 16-1 is formed in the center of the air inlet silica gel sheet 16, the air inlet silica gel sheet sleeve hole 16-1 of the air inlet silica gel sheet 16 is sleeved on the air inlet valve cover column, the air inlet silica gel sheet 16 can move along the air inlet valve cover column, the outer diameter of the air inlet silica gel sheet 16 is smaller than the inner diameter of the air inlet valve cover 15, the air inlet silica gel sheet 16 cannot completely seal a plurality of valve cover air inlet holes 15-1 in the bottom of the air inlet valve cover 15, and when the air inlet silica gel sheet 16 is attached to the baffle 17-1.
The one-way air outlet valve body comprises an air outlet valve base 19, an air outlet silica gel sheet 18 and an air outlet valve cover 20, an air outlet hole 22 is formed in the lower head cover 3, the air outlet valve base 19 is arranged on the inner side of the lower head cover 3, the air outlet valve cover 20 is arranged on the outer side of the lower head cover 3, the air outlet valve base 19 is clamped on the air outlet hole 22, and the air outlet valve base 19 and the air outlet valve cover 20 are connected in a clamping fit manner; a plurality of base air outlet holes 19-1 are formed in the air outlet valve base 19, and a first air outlet valve cover column 19-2 is arranged in the center of one surface, facing the air outlet valve cover 20, of the air outlet valve base 19; the side wall of the air outlet valve cover 20 is provided with a plurality of valve cover air outlet holes 20-1, one surface of the air outlet valve cover 20 facing the air outlet valve base 19 is also provided with a second air outlet valve cover column 20-2, and the first air outlet valve cover column 19-2 and the second air outlet valve cover column 20-2 are concentrically arranged; when the air outlet valve base 19 and the air outlet valve cover 20 are connected in a snap fit manner, the first air outlet valve cover column 19-2 and the second air outlet valve cover column 20-2 are combined together to form the air outlet valve cover column, the center of the air outlet silicone piece 18 is provided with an air outlet silicone piece sleeve hole 18-1, the air outlet silicone piece sleeve hole 18-1 of the air outlet silicone piece 18 is sleeved on the air outlet valve cover column, the air outlet silicone piece 18 can move along the air outlet valve cover column, when the air outlet silicone piece 18 is attached to the air outlet valve base 19, the air outlet silicone piece 18 seals a plurality of base air outlet holes 19-1 on the air outlet valve base 19, and when the air outlet silicone piece 18 is attached to the air outlet valve cover 20, the plurality of valve cover air outlet holes 20-1 on the air outlet valve cover 20;
the reflecting component comprises an exhaust guide plate 5, an air inlet guide plate 6, a first reflecting plate 7 and a second reflecting plate 8, the exhaust guide plate 5 and the air inlet guide plate 6 are arranged oppositely, the first reflecting plate 7 and the second reflecting plate 8 are arranged at two ends of the exhaust guide plate 5 and the air inlet guide plate 6, and the exhaust guide plate 5, the air inlet guide plate 6, the first reflecting plate 7 and the second reflecting plate 8 are clamped into a whole through buckles.
The exhaust guide plate 5 is arranged on one side of the lower head cover 3 facing the inside of the luminous cavity, an exhaust cavity is formed between the exhaust guide plate 5 and the lower head cover 3, and a plurality of guide plate exhaust holes are uniformly formed in the bottom of the exhaust guide plate 5; the air inlet guide plate 6 is arranged on one side of the upper head cover 2 facing the light-emitting cavity, an air inlet cavity is formed between the air inlet guide plate 6 and the upper head cover 2, and a plurality of guide plate air inlet holes are uniformly formed in the bottom of the air inlet guide plate 6; the aperture of the exhaust hole of the guide plate on the exhaust guide plate 5 is larger than that of the air inlet hole of the guide plate on the air inlet guide plate 6.
The air in the luminous cavity enters the exhaust cavity through a plurality of guide plate exhaust holes at the bottom of the exhaust guide plate 5 and is exhausted through the one-way air outlet valve body on the lower head cover 3; the outside air enters the air inlet cavity through the one-way air inlet valve and enters the light-emitting cavity through a plurality of air inlet holes of the guide plate at the bottom of the air inlet guide plate 6.
When the air in the air inlet cavity flows to the direction of the air inlet valve base 17 through the air inlet valve cover air inlet hole 15-1 on the air inlet valve cover 15, the air inlet silica gel sheet 16 is pressed to move to the air inlet valve base 17 along the air inlet valve cover column and tightly pressed on the baffle 17-1 of the air inlet valve base 17, the air inlet silica gel sheet 16 seals the baffle air inlet hole 17-4 on the baffle 17-1, and the air can not flow out of the air inlet cavity through the air inlet valve base 17; when the air pressure in the air inlet cavity is smaller than the atmospheric pressure, the external air flows to the air inlet cavity of the air inlet valve base through the air inlet side wall hole 17-3 of the air inlet valve base 17 and flows to the air inlet valve cover 15 through the baffle air inlet hole 17-4, the air inlet silica gel sheet 16 moves to the air inlet valve cover 15 along the air inlet valve cover column under the pressure, an annular gap is formed between the air inlet silica gel sheet 16 and the side wall of the air inlet valve cover 15, and the external air flows into the air inlet cavity through the annular gap and the valve cover air inlet holes 15-1.
When air in the exhaust cavity flows to the exhaust valve cover 20 through the plurality of base exhaust holes 19-1 of the exhaust valve base 19, the exhaust silica gel sheet 18 moves to the exhaust valve cover 20 along the exhaust valve cover column, the exhaust silica gel sheet 18 is separated from the exhaust valve base 19, the exhaust silica gel sheet 18 is attached to the cover bottom of the exhaust valve cover 20, and at the moment, the air is exhausted from the exhaust cavity through the plurality of valve cover exhaust holes 20-1 on the side wall of the exhaust valve cover 20; when external air flows towards the air outlet valve base 19 through the valve cover air outlet holes 20-1 on the side wall of the air outlet valve cover 20, the air outlet silicone sheet 18 is pressed to move towards the air outlet valve base 19, the air outlet silicone sheet 18 is pressed to be tightly attached to the plane of the air outlet valve base 19, the larger the pressure is, the tighter the attachment is, the air outlet silicone sheet 18 seals the base air outlet holes 19-1 on the air outlet valve base 19, so that an air flow channel is blocked, and the external air cannot flow into the air outlet cavity through the air outlet valve base 19.
Furthermore, the light-emitting component comprises an LED light-emitting lamp bead 4, a printed circuit board and a connecting wire, the LED light-emitting lamp bead 4 is arranged on the printed circuit board and is electrically connected with the printed circuit board, and the printed circuit board is externally connected with a power supply through the connecting wire. The air inlet silica gel sheet 16 can move 0.2mm along the air inlet valve cover column; the air outlet silica gel sheet 18 can move 0.2mm along the air outlet valve cover column.
Set up the sealed damper of EVA between bottom plate 1 and the printing opacity diffuser plate 13, the sealed damper of EVA includes the sealed bumper bar 9 of first two-sided gum EVA, the sealed bumper bar 10 of second two-sided gum EVA, the sealed bumper bar 11 of third two-sided gum EVA, the sealed bumper bar 12 of fourth two-sided gum EVA, the sealed bumper bar of EVA includes the sealed bumper bar 9 of first two-sided gum EVA, the sealed bumper bar 10 of second two-sided gum EVA, the sealed bumper bar 11 of third two-sided gum EVA, the sealed bumper bar 12's of fourth two-sided gum EVA relative both sides adhesive of precoating, the sealed bumper bar 9 of bottom plate 1 and the sealed bumper bar 12 of printing opacity diffuser plate 13 laminating is passed through respectively to four sides, the sealed bumper bar 10 of second two-sided gum EVA, the sealed bumper bar 11 of third two-sided gum EVA, the sealed bumper bar 12 of fourth two-sided gum EVA is fixed. The thickness of the light-transmitting diffusion plate 13 is 0.6-3mm, a fixed frame 14 is fixed around the light-transmitting diffusion plate 13, and the fixed frame 14 is composed of 4 sheet metal parts fixed by welding and used for fixing the light-transmitting diffusion plate 13.
The exhaust guide plate 5, the intake guide plate 6, the first reflection plate 7 and the second reflection plate 8 are all made of high-reflectivity non-metallic materials.
When the LED lamp is used, after the indoor LED lamp is lightened, the light-emitting component is lightened to generate heat, and the air temperature in the light-emitting cavity between the bottom plate 1 and the light-transmitting diffusion plate 13 is increased; because the aperture of the vent hole of the guide plate on the exhaust guide plate 5 is larger than the aperture of the air inlet hole of the guide plate on the air inlet guide plate 6, the resistance of the hot air in the luminous cavity on the exhaust guide plate 5 is smaller than the resistance of the vent hole of the guide plate on the air inlet guide plate 6, and the hot air in the luminous cavity rapidly enters the exhaust cavity through the vent hole of the guide plate on the exhaust guide plate 5 and flows to the air outlet valve cover 20 through the base air outlet hole of the air outlet valve base 19; at this time, when the hot air in the exhaust cavity flows to the exhaust valve cover 20 through the base outlet hole of the outlet valve base 19, the outlet silicone piece 18 moves towards the outlet valve cover 20 along the outlet valve cover column, the outlet silicone piece 18 is separated from the outlet valve base 19, the outlet silicone piece 18 is attached to the cover bottom of the outlet valve cover 20, and at this time, the air is discharged out of the exhaust cavity from the valve cover outlet holes 20-1 on the side wall of the outlet valve cover 20.
When hot air in the luminous cavity enters the exhaust cavity through the exhaust holes of the guide plate on the exhaust guide plate 5, the luminous cavity forms temporary relative vacuum; air in the air inlet cavity between the air inlet guide plate 6 and the upper head cover 2 rapidly enters the light-emitting cavity through the air inlet holes of the air inlet guide plate on the air inlet guide plate 6 due to pressure difference, the air inlet cavity forms relative vacuum, and at the moment, the air pressure of the air inlet cavity is smaller than the external atmospheric pressure;
when the air pressure of the air inlet cavity is smaller than the external atmospheric pressure, the external air flows to the air inlet cavity of the air inlet valve base through the air inlet side wall hole 17-3 of the air inlet valve base 17 and flows to the air inlet valve cover 15 through the baffle air inlet hole 17-4, the air inlet silica gel sheet 16 moves to the air inlet valve cover 15 along the air inlet valve cover column under the pressure, an annular gap is formed between the air inlet silica gel sheet 16 and the side wall of the air inlet valve cover 15, and the external air gushes into the air inlet cavity through the annular gap and the plurality of valve cover air inlet holes 15-;
through the continuous circulation, the hot air continuously enters the exhaust cavity through the exhaust holes of the guide plate on the exhaust guide plate 5 and is exhausted through the one-way exhaust valve body; the external cold air continuously enters the air inlet cavity through the one-way air inlet valve body and enters the light-emitting cavity through the air inlet hole of the air guide plate on the air inlet guide plate 6; the natural convection cooling in the luminous cavity is realized.
Claims (6)
1. A natural convection device of an indoor LED lamp comprises a bottom plate (1) and a light-emitting assembly arranged on the inner side of the bottom plate (1), wherein a light-transmitting diffusion plate (13) is covered on the bottom plate (1), a light-emitting cavity is formed between the bottom plate (1) and the light-transmitting diffusion plate (13), the light-emitting assembly is arranged in the light-emitting cavity between the bottom plate (1) and the light-transmitting diffusion plate (13), and the light-emitting assembly is fixed on the bottom plate (1); a light reflecting component is arranged in the light emitting cavity and is positioned on the inner wall of the periphery of the bottom plate (1);
the method is characterized in that: an upper head cover (2) and a lower head cover (3) are arranged at two ends of the bottom plate (1), and a one-way air inlet valve body (23) and a one-way air outlet valve body (24) are respectively arranged on the upper head cover (2) and the lower head cover (3);
the one-way air inlet valve body (23) comprises an air inlet valve cover (15), an air inlet silica gel sheet (16) and an air inlet valve base (17), an air inlet hole (21) is formed in the upper head cover (2), the air inlet valve base (17) is arranged on the outer side of the upper head cover (2), the air inlet valve cover (15) is arranged on the inner side of the upper head cover (2), the air inlet valve base (17) is clamped on the air inlet hole (21), and the air inlet valve base (17) and the air inlet valve cover (15) are connected in a buckling fit mode; a baffle plate (17-1) is arranged in the air inlet valve base (17), an air inlet valve base air inlet cavity is formed by the baffle plate (17-1) and the inner wall of the bottom of the air inlet valve base (17), an air inlet side wall hole (17-3) is formed in the side wall between the baffle plate (17-1) and the bottom of the air inlet valve base (17), a first air inlet valve cover column (17-2) is arranged in the center of one surface, facing the air inlet valve cover (15), of the baffle plate (17-1), and a plurality of baffle plate air inlet holes (17-4) are further formed in the baffle plate (17-1); the cover bottom of the air inlet valve cover (15) is provided with a plurality of valve cover air inlets (15-1), the cover bottom of the air inlet valve cover (15) is also provided with a second air inlet valve cover column (15-2), and the first air inlet valve cover column (17-2) and the second air inlet valve cover column (15-2) are concentrically arranged; when the air inlet valve base (17) is connected with the air inlet valve cover (15) in a buckling fit manner, the first air inlet valve cover column (17-2) and the second air inlet valve cover column (15-2) are combined together to form the air inlet valve cover column, an air inlet silica gel sheet sleeve hole (16-1) is arranged in the center of the air inlet silica gel sheet (16), the air inlet silica gel sheet sleeve hole (16-1) of the air inlet silica gel sheet (16) is sleeved on the air inlet valve cover column, and the air inlet silica gel sheet (16) can move along the air inlet valve cover column, the outer diameter of the air inlet silica gel sheet (16) is smaller than the inner diameter of the air inlet valve cover (15), the air inlet silica gel sheet (16) cannot completely seal a plurality of valve cover air inlet holes (15-1) at the bottom of the air inlet valve cover (15), and when the air inlet silica gel sheet (16) is attached to the baffle (17-1), the air inlet silica gel sheet (16) completely seals the baffle air inlet holes (17-4);
the one-way air outlet valve body (24) comprises an air outlet valve base (19), an air outlet silica gel sheet (18) and an air outlet valve cover (20), an air outlet hole (22) is formed in the lower head cover (3), the air outlet valve base (19) is arranged on the inner side of the lower head cover (3), the air outlet valve cover (20) is arranged on the outer side of the lower head cover (3), the air outlet valve base (19) is clamped on the air outlet hole (22), and the air outlet valve base (19) and the air outlet valve cover (20) are connected in a buckling fit mode; a plurality of base air outlet holes (19-1) are formed in the air outlet valve base (19), and a first air outlet valve cover column (19-2) is arranged in the center of one surface, facing the air outlet valve cover (20), of the air outlet valve base (19); a plurality of valve cover air outlet holes (20-1) are formed in the side wall of the air outlet valve cover (20), a second air outlet valve cover column (20-2) is further arranged on one surface, facing the air outlet valve base (19), of the air outlet valve cover (20), and the first air outlet valve cover column (19-2) and the second air outlet valve cover column (20-2) are concentrically arranged; when the air outlet valve base (19) and the air outlet valve cover (20) are connected in a snap fit manner, the first air outlet valve cover column (19-2) and the second air outlet valve cover column (20-2) are combined together to form the air outlet valve cover column, an air outlet silica gel sheet sleeve hole (18-1) is formed in the center of the air outlet silica gel sheet (18), the air outlet silica gel sheet sleeve hole (18-1) of the air outlet silica gel sheet (18) is sleeved on the air outlet valve cover column, the air outlet silica gel sheet (18) can move along the air outlet valve cover column, when the air outlet silica gel sheet (18) is attached to the air outlet valve base (19), the air outlet silica gel sheet (18) seals a plurality of air outlet base holes (19-1) on the air outlet valve base (19), and when the air outlet silica gel sheet (18) is attached to the air outlet valve cover (20), the valve covers (20-1) on the air outlet valve cover;
the reflecting assembly comprises an exhaust guide plate (5), an air inlet guide plate (6), a first reflecting plate (7) and a second reflecting plate (8), the exhaust guide plate (5) and the air inlet guide plate (6) are arranged oppositely, the first reflecting plate (7) and the second reflecting plate (8) are arranged at two ends of the exhaust guide plate (5) and the air inlet guide plate (6), and the exhaust guide plate (5), the air inlet guide plate (6), the first reflecting plate (7) and the second reflecting plate (8) are clamped into a whole through a buckle;
the exhaust guide plate (5) is arranged on one side of the lower head cover (3) facing the inside of the luminous cavity, an exhaust cavity is formed between the exhaust guide plate (5) and the lower head cover (3), and a plurality of guide plate exhaust holes are uniformly formed in the bottom of the exhaust guide plate (5); the air inlet guide plate (6) is arranged on one side of the upper head cover (2) facing the inside of the luminous cavity, an air inlet cavity is formed between the air inlet guide plate (6) and the upper head cover (2), and a plurality of guide plate air inlet holes are uniformly formed in the bottom of the air inlet guide plate (6); the aperture of the air outlet of the guide plate on the exhaust guide plate (5) is larger than that of the air inlet of the guide plate on the air inlet guide plate (6);
air in the luminous cavity enters the exhaust cavity through a plurality of exhaust holes of the exhaust guide plate (5) at the bottom of the exhaust guide plate and is exhausted through the one-way air outlet valve body on the lower head cover (3); the outside air enters the air inlet cavity through the one-way air inlet valve and enters the light-emitting cavity through a plurality of air inlet holes of the air inlet guide plate (6);
when air in the air inlet cavity flows towards the direction of the air inlet valve base (17) through the air inlet valve cover (15) upper valve cover air inlet hole (15-1), the air inlet silica gel sheet (16) is pressed to move towards the air inlet valve base (17) along the air inlet valve cover column and tightly pressed on the baffle (17-1) of the air inlet valve base (17), the air inlet silica gel sheet (16) seals the baffle air inlet hole (17-4) on the baffle (17-1), and the air cannot flow out of the air inlet cavity through the air inlet valve base (17); when the air pressure in the air inlet cavity is smaller than the atmospheric pressure, the external air flows to the air inlet cavity of the air inlet valve base through an air inlet side wall hole (17-3) of the air inlet valve base (17) and flows to the air inlet valve cover (15) through a baffle air inlet hole (17-4), the air inlet silica gel sheet (16) is pressed to move towards the air inlet valve cover (15) along the air inlet valve cover column, an annular gap is formed between the air inlet silica gel sheet (16) and the side wall of the air inlet valve cover (15), and the external air flows into the air inlet cavity through the annular gap and the valve cover air inlet holes (15-1);
when air in the exhaust cavity flows to the exhaust valve cover (20) through a plurality of base air outlet holes (19-1) of the exhaust valve base (19), the air outlet silica gel sheet (18) moves towards the exhaust valve cover (20) along the air outlet valve cover column, the air outlet silica gel sheet (18) is separated from the exhaust valve base (19), the air outlet silica gel sheet (18) is attached to the cover bottom of the exhaust valve cover (20), and at the moment, the air is exhausted from the exhaust cavity through the plurality of valve cover air outlet holes (20-1) on the side wall of the exhaust valve cover (20); when external air flows towards the direction of the air outlet valve base (19) through the valve cover air outlet holes (20-1) on the side wall of the air outlet valve cover (20), the air outlet silica gel sheet (18) is pressed to move towards the air outlet valve base (19), the air outlet silica gel sheet (18) is pressed and then clings to the plane of the air outlet valve base (19), the more the pressure is, the more the clinging is, the air outlet silica gel sheet (18) seals the base air outlet holes (19-1) on the air outlet valve base (19), so that the air flow channel is blocked, and the external air cannot flow into the air outlet cavity through the air outlet valve base (19).
2. The natural convection device of the indoor LED lamp as claimed in claim 1, wherein: the light-emitting component comprises LED light-emitting lamp beads (4), a printed circuit board and a connecting wire, the LED light-emitting lamp beads (4) are arranged on the printed circuit board and are electrically connected with the printed circuit board, and the printed circuit board is externally connected with a power supply through the connecting wire.
3. The natural convection device of the indoor LED lamp as claimed in claim 1, wherein: the air inlet silica gel sheet (16) can move 0.2mm along the air inlet valve cover column; the air outlet silica gel sheet (18) can move 0.2mm along the air outlet valve cover column.
4. The natural convection device of the indoor LED lamp as claimed in claim 1, wherein: an EVA sealing damping assembly is arranged between the bottom plate (1) and the light transmission diffusion plate (13), the EVA sealing damping assembly comprises a first double-sided adhesive EVA sealing damping strip (9), a second double-sided adhesive EVA sealing damping strip (10), a third double-sided adhesive EVA sealing damping strip (11) and a fourth double-sided adhesive EVA sealing damping strip (12), the EVA sealing damping assembly comprises an adhesive which is pre-coated on the opposite sides of the first double-sided adhesive EVA sealing damping strip (9), the second double-sided adhesive EVA sealing damping strip (10), the third double-sided adhesive EVA sealing damping strip (11) and the fourth double-sided adhesive EVA sealing damping strip (12), the four sides of the bottom plate (1) attached to the light-transmitting diffusion plate (13) are respectively fixed through a first double-sided adhesive-backed EVA sealing shock absorption strip (9), a second double-sided adhesive-backed EVA sealing shock absorption strip (10), a third double-sided adhesive-backed EVA sealing shock absorption strip (11) and a fourth double-sided adhesive-backed EVA sealing shock absorption strip (12);
the thickness of the light-transmitting diffusion plate (13) is 0.6-3mm, a fixed frame (14) is fixed on the periphery of the light-transmitting diffusion plate (13), and the fixed frame (14) is composed of 4 sheet metal parts fixed by welding and used for fixing the light-transmitting diffusion plate (13).
5. The natural convection device of the indoor LED lamp as claimed in claim 1, wherein: the exhaust guide plate (5), the air inlet guide plate (6), the first reflection plate (7) and the second reflection plate (8) are all made of high-reflectivity non-metallic materials.
6. The method for natural convection by using the natural convection device of the indoor LED lamp as claimed in any one of claims 1 to 5, characterized in that:
after the indoor LED lamp is lighted, the light-emitting component is lighted to generate heat, and the air temperature in the light-emitting cavity between the bottom plate (1) and the light-transmitting diffusion plate (13) rises; because the aperture of the air outlet hole of the guide plate on the exhaust guide plate (5) is larger than the aperture of the air inlet hole of the guide plate on the air inlet guide plate (6), the resistance of hot air in the luminous cavity on the exhaust guide plate (5) is smaller than the resistance of the air outlet hole of the guide plate on the air inlet guide plate (6), and the hot air in the luminous cavity rapidly enters the exhaust cavity through the air outlet hole of the guide plate on the exhaust guide plate (5) and flows to the air outlet valve cover (20) through the air outlet hole of the base of the air outlet valve base (19); at the moment, when hot air in the exhaust cavity flows to the exhaust valve cover (20) through a base air outlet hole of the air outlet valve base (19), the air outlet silica gel sheet (18) moves towards the exhaust valve cover (20) along an air outlet valve cover column, the air outlet silica gel sheet (18) is separated from the air outlet valve base (19), the air outlet silica gel sheet (18) is attached to the cover bottom of the exhaust valve cover (20), and at the moment, the air is exhausted from a plurality of valve cover air outlet holes (20-1) on the side wall of the exhaust valve cover (20) to the exhaust cavity;
when hot air in the luminous cavity enters the exhaust cavity through the exhaust holes of the guide plate on the exhaust guide plate (5), the luminous cavity forms temporary relative vacuum; air in an air inlet cavity between the air inlet guide plate (6) and the upper head cover (2) rapidly enters the light-emitting cavity through an air inlet hole of the air inlet guide plate on the air inlet guide plate (6) due to pressure difference, the air inlet cavity forms relative vacuum, and at the moment, the air pressure of the air inlet cavity is smaller than the external atmospheric pressure;
when the air pressure of the air inlet cavity is smaller than the external atmospheric pressure, the external air flows to the air inlet cavity of the air inlet valve base through an air inlet side wall hole (17-3) of the air inlet valve base (17) and flows to the air inlet valve cover (15) through a baffle air inlet hole (17-4), the air inlet silica gel sheet (16) moves towards the air inlet valve cover (15) along an air inlet valve cover column under the pressure, an annular gap is formed between the air inlet silica gel sheet (16) and the side wall of the air inlet valve cover (15), and the external air flows into the air inlet cavity through the annular gap and the valve cover air inlet holes (15-1);
through the continuous circulation, hot air continuously enters the exhaust cavity through the exhaust holes of the guide plate on the exhaust guide plate (5) and is exhausted through the one-way exhaust valve body; the external cold air continuously enters the air inlet cavity through the one-way air inlet valve body and enters the light-emitting cavity through the air inlet hole of the air inlet guide plate (6); the natural convection cooling in the luminous cavity is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557380.3A CN109737363B (en) | 2018-12-19 | 2018-12-19 | Natural convection device and method for indoor LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557380.3A CN109737363B (en) | 2018-12-19 | 2018-12-19 | Natural convection device and method for indoor LED lamp |
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| CN109737363A CN109737363A (en) | 2019-05-10 |
| CN109737363B true CN109737363B (en) | 2020-08-21 |
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| CN201811557380.3A Active CN109737363B (en) | 2018-12-19 | 2018-12-19 | Natural convection device and method for indoor LED lamp |
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| CN110486684A (en) * | 2019-09-06 | 2019-11-22 | 浙江双宇电子科技有限公司 | A kind of ceiling lamp |
| CN110494026B (en) * | 2019-09-25 | 2020-12-08 | 西安易朴通讯技术有限公司 | Wearable device and temperature control prompting method |
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| CN106152080A (en) * | 2015-04-01 | 2016-11-23 | 湖南玖泓节能科技有限公司 | A kind of super-high-power LED stage lighting |
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| CN203231212U (en) * | 2012-12-17 | 2013-10-09 | 深圳市精艺精汽车配件有限公司 | Automobile daylight running light with a vacuum sealing cavity structure |
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| KR20090034074A (en) * | 2007-10-02 | 2009-04-07 | 한성엘컴텍 주식회사 | Lighting device having a plurality of light emission devices |
| CN202209591U (en) * | 2011-09-03 | 2012-05-02 | 黄庆彬 | Wall washing lamp with air pressure balancing device |
| CN103712139A (en) * | 2013-12-14 | 2014-04-09 | 佛山市大明照明电器有限公司 | High-power LED (Light-Emitting Diode) street lamp |
| CN106152080A (en) * | 2015-04-01 | 2016-11-23 | 湖南玖泓节能科技有限公司 | A kind of super-high-power LED stage lighting |
| CN204986550U (en) * | 2015-08-19 | 2016-01-20 | 中科光电（长春）股份有限公司 | LED panel lamp |
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Address after: 211400, No. 9, Tai Tai Road, Yizheng Economic Development Zone, Yizheng, Jiangsu, Yangzhou Patentee after: Cai Xiaoling Address before: 211400 No. 7-14 Maqiao Road, Yizheng City, Yangzhou City, Jiangsu Province Patentee before: Cai Xiaoling |