34results about How to "No spot" patented technology

The invention discloses an LED light source structure, which comprises a bracket, a lens arranged on the upper plane of the bracket and an LED chip encapsulated in a cavity formed by the bracket and the lens. The upper surface of the lens is two connecting semi-ellipsoidal surfaces or semi-spherical surfaces; the two connecting semi-ellipsoidal surfaces or semi-spherical surfaces are symmetrically distributed along the central axis of the LED chip and the meeting surface of the two connecting semi-ellipsoidal surfaces or semi-spherical surfaces is a long and narrow surface; two reflex arc-shaped lug bosses are symmetrically arranged on the two sides of the short axis extension line located on the semi-ellipsoidal surfaces or the semi-spherical surfaces and fixedly arranged on the upper plane of the bracket. The invention ensures that the light extraction shape of the light emitted by the side surface of the LED chip can be changed through the refraction and reflection of the lens, and the light can gather and be distributed according to a rectangular irradiation surface, thereby reducing the secondary refraction and reflection of the beams, improving light outgoing rate and illumination uniformity, and realizing an irradiation road surface without light spots, dark areas and blinding glares.

The invention relates to a near ultraviolet or ultraviolet excited LED light-emitting device which is composed of a packaging substrate, a near ultraviolet or ultraviolet LED chip and mixed fluorescent powder glue which can be used to effectively absorb light emitted by the LED chip and emit red, green and blue light. The light-emitting peak wavelength of the LED chip is in the range from 380nm to 420nm. The red fluorescent powder is the CaAlSi(ON)3: Eu system. The green fluorescent powder is the SiAlON: Eu system. The blue fluorescent powder is the (Sr, Ba)10(PO4)6Cl2: Eu system. Most of the light generated by the near ultraviolet or ultraviolet LED chip is used for exciting the fluorescent powder, so the color purity of the light only depends on the color purity of the fluorescent powder, and a high color rendering index CRI which is greater than 95 can be obtained, wherein color rendering indexes from R1 to R15 are all greater than 90. According to the invention, the made white LED device has advantages of good spectrum continuity, natural light proximity, that is the solar spectrum, good color temperature uniformity and no light spot.

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 relates to a rectangular light reflector of an efficient anti-glare LED (light emitting diode) lamp fitting, wherein the light reflector is internally provided with a step golden-tower-shaped light reflection surface; the uppermost layer of the step golden-tower-shaped light reflection layer is provided with an upper opening for mounting LED lamp beads, and the uppermost layer end surface is provided with a quadrate with one side of 8mm; the height of each layer of the step golden tower shape from the first layer to last but one layer are equal; an included angle between the slope surface in each layer of the step golden tower shape and the vertical plane is 20 degrees; the opening of the lowermost layer of the step golden tower shape is a light emergent opening which is rectangular; the length of one side of the rectangle is 25.6-32mm, and the length of the adjacent side is 25.6-32mm. The light reflector is especially suitable for the use in large physical training places or sports tournament places, the normal sports of the sportsman can not be influenced; the lamp fitting which is provided with the light reflector has uniform illumination, has no light spots, has a long service life, saves energy sources, and is suitable for the using in waiting halls, waiting rooms, chambers, stadiums and other special places.

The invention relates to an LED lamp tube-shaped light equalizing device. The LED lamp tube-shaped light equalizing device comprises a lampshade, a lamp holder, a lamp panel, lamp beads, a main control board, a main board support, a PC transparent tube, a pore membrane, a light mixing membrane and a driver board; the lamp panel is fixed at the joint of the cylindrical lampshade and the lamp holder; the lamp beads include white lamp beads and RGB lamp beads, all of which are evenly fixed on the lamp panel; the main control board is mounted on the main board support at the top of the lampshade and connected with the lamp board by use of an FFC wire; the upper part of the PC transparent tube is clamped and fixed with a groove formed in the bottom of the main board support, while the lower part of the PC transparent tube is connected with the lamp panel to support up and down. The LED lamp tube-shaped light equalizing device is in a bottom light emitting form without light spot, and the brightness of the white light is uniform at the top and the bottom of the whole cylindrical lampshade; besides, the number of the used lamp beads is small so that the production cost can be greatly reduced; the LED lamp tube-shaped light equalizing device is low in power, energy-saving and environmental friendly, and meanwhile, capable of achieving optical effects that cannot be achieved in other light emitting manners.

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 provides a fluorescent optical fiber, wherein a layer of fluorescent powder is deposited on the surface of an optical fiber. A production method of the fluorescent optical fiber comprises the following steps of: (1) firstly, cleaning the optical fiber, and removing water in a hot air drying way; (2) carrying out mild plasma treatment on the optical fiber, so that the adhesive force of the fluorescent powder to the surface of the optical fiber can be increased; and (3) performing vacuum sputtering by the means that the optical fiber which is performed by the mild plasma surface treatment is put into a low-temperature horizontal magnetron sputtering machine or performing evaporation plating or immersion plating by the means that the purified fluorescent powder is put into a vacuum evaporation plating machine, so that a layer of the fluorescent powder can be obtained on the surface of the optical fiber. A white light floodlight which is made from the fluorescent optical fiber is assembled by the means that the fluorescent optical fiber, an optical lens module, a diode luminescence module and a power source module are matched with one another. The production method of the fluorescent optical fiber is fewer in working procedures and low in cost. The white light floodlight which is made from the fluorescent optical fiber can directly emit white light without secondary light distribution, a lighting angle is approximate to 360 degrees, the light ray is soft, and the white light floodlight is free of glare and faculae.

The invention provides an optical film for enhancing reflection. The optical film comprises two side surfaces which are perpendicular to the thickness direction of the optical film and are arranged back to back, and the two side surfaces are respectively marked as a light emergent side and a light incident side; a plurality of micro-lens structures are arranged on the light emitting side to form a reflecting layer with a certain thickness, and the height of the micro-lens structures is the thickness of the reflecting layer; and a film layer between the light incident side and the reflecting layer is used as a transmission layer; a surface, relative to the light-emitting side, of the micro-lens structure is recessed to form a cavity used for being filled with an air medium, and the refractive index of the optical film is larger than that of air, so part of light entering the optical film from the light-incident side can be reflected by the micro-lens structure. By arranging the reflecting layer with the concave micro-lens structure, part of light rays incident from the light incident side of the optical film can be totally reflected, if a reflecting element is arranged on the light incident side of the optical film, the light rays can be reflected for multiple times between the reflecting element and the optical film, and the optical light mixing distance of the light rays is greatly increased.

The present invention is characterized by that in the front of LED light source a transparent plastic plate is placed, on said transparent plastic plate several through holes are cut, and formed into array light rod, the light rod is the through hole on the transparent plastic plate, its number and position are correspondent to the LED light source, a connection component is used for connecting the transparent plastic plate and light source seat into one body.

The invention discloses a fluorescent module and a laser lighting system. The fluorescent module comprises a fluorescent layer, a semiconductor refrigeration device and a radiator, a cold end of the semiconductor refrigeration device is connected with the fluorescent layer, a hot end of the semiconductor refrigeration device is connected with the radiator, and the fluorescent layer is an integrally formed fluorescent layer. According to the fluorescent module, the used fluorescent layer is the integrally formed fluorescent layer, so that the uniformity of a fluorescent material in the fluorescent layer can be ensured in the preparation process, the wavelength conversion is uniform, the color and intensity of emergent light are uniform, and light spots are not formed. Meanwhile, the integrally formed fluorescent layer is high in density and heat conductivity, so that heat generated when the integrally formed fluorescent layer is irradiated by laser can be rapidly conducted, and heat dissipation is faster. According to the laser lighting system, due to the fact that the fluorescent module is used, the luminous intensity is greatly improved, and meanwhile it is guaranteed that emergent light spots are uniform.

The invention discloses a target reflection type diffusion sheet head-up display device, which comprises a projection module and a target reflection type diffusion sheet, and is characterized in thatthe target reflection type diffusion sheet is provided with an array of micromirrors, an image light source projected by the projection module can be reflected and diffused to a designed diffusion area, and the intersection range of the diffusion areas is an eye box, and the projected image can be seen as long as human eyes are within the range of the eye box. Thus, the problem of uneven brightness caused by an interference phenomenon is solved, and the effect of maximizing the image brightness is achieved.

The invention relates to a near ultraviolet or ultraviolet excited LED light-emitting device which is composed of a packaging substrate, a near ultraviolet or ultraviolet LED chip and mixed fluorescent powder glue which can be used to effectively absorb light emitted by the LED chip and emit red, green and blue light. The light-emitting peak wavelength of the LED chip is in the range from 380nm to 420nm. The red fluorescent powder is the CaAlSi(ON)3: Eu system. The green fluorescent powder is the SiAlON: Eu system. The blue fluorescent powder is the (Sr, Ba)10(PO4)6Cl2: Eu system. Most of the light generated by the near ultraviolet or ultraviolet LED chip is used for exciting the fluorescent powder, so the color purity of the light only depends on the color purity of the fluorescent powder, and a high color rendering index CRI which is greater than 95 can be obtained, wherein color rendering indexes from R1 to R15 are all greater than 90. According to the invention, the made white LED device has advantages of good spectrum continuity, natural light proximity, that is the solar spectrum, good color temperature uniformity and no light spot.

The invention discloses a high color rendering and wide spectrum white light LED light source. The white light LED light source comprises a fluorescent glue and a blue light chip, the LED fluorescentglue is formed by mixing the phosphor and the silica gel, the phosphor comprises the following components (parts by mass): 0.10-0.50 parts of blue-green powder with an emission peak wavelength of 485-500 nm, 0.15-0.40 parts of green powder with an emission peak wavelength of 530-545 nm, 0.05-0.30 parts of green powder with an emission peak wavelength of 550-557nm, 0.08-0.30 parts of green powder with an emission peak wavelength of 559-565 nm, and 0.01-0.10 parts of red powder with an emission peak wavelength of 620-640 nm. The waveband range of the blue light chip is 447-457nm, the mass ratioof the phosphor and the silica gel is 0.1-0.6:1, the silica gel is formed by a silica gel A and a silica gel B, and the mass ratio of the silica gel A and the silica gel B is 1:0.6-1.5. The LED lightsource is high in energy conversion efficiency, good in color temperature uniformity and free of spots, has a color rendering index of up to 97, is wide in spectral range and is a healthy light source.

The invention relates to a high-power and high-luminance yellow light LED, which is characterized in that: the LED comprises a plurality of high-luminance wafers; and the plurality of high-luminance wafers are coated with a fluorescent powder layer formed by fluorescent powder. The high-power and high-luminance yellow light LED has higher light luminance, better luminous effect, slow optical attenuation, long service life and no light spot, and overcomes the defect of white light dazzling.

The invention discloses a light source and a production process thereof. The light source comprises a lamp body, a flexible circuit board, a plurality of light emitting units and a light transmittinglayer, and the lamp body comprises a column body; the flexible circuit board is attached to the outer surface of the column body; the multiple light-emitting units are installed on the flexible circuit board, and the adjacent light-emitting units are arranged at intervals; and the light-transmitting layer covers the outer sides of the flexible circuit board and the light-emitting units so as to mix the light emitted by the plurality of light-emitting units, so that the light source emits light uniformly. The light-emitting effect can be greatly improved, uniform integrated light emitting is achieved, and no segment or light spot exists.

The invention provides a white-light LED light source with continuously adjustable color temperature. A purple-light chip having a wavelength of 380 nm to 420 nm and a blue-light chip having a wavelength of 440 nm to 480 nm are configured to form two channels respectively in a device. By virtue of the characteristics that a Lu3Al5O12:Eu green fluorescent powder A and a K2SiF6:Mn red fluorescent powder A can be excited by the blue light and are less likely to be excited by the purple light, and in cooperation with a CaAlSi(ON)3:Eu red fluorescent powder B and a SiAlON:Eu green fluorescent powder B which can be simultaneously excited by a blue-purple-light chip, and a (Sr,Ba)10(PO4)6Cl2:Eu blue fluorescent powder B which can be excited by the purple light and is less likely to be excited bythe blue light, the continuously adjustable color temperature is achieved on one light-emitting surface, the good color temperature uniformity is acheived, and no spot is generated. The white-light LED light source can realize full-spectrum white light and can be applied to all LED light source packaging forms including a patch LED device or an LED module.

The invention discloses an LED (light emitting diode) module and an LED lamp manufactured by the LED module. The LED module comprises a base, an LED circuit board fixed on the base and 1-8 LED lamp beads positioned on the LED circuit board; each LED lamp bead is covered by a lens fixed on the LED circuit board; a plurality of radiating fins and at least one air convection radiating hole penetrating through the base are molded on the base; the LED lamp comprises a non-plane module mounting plate; a plurality of the LED modules distributed in all three-dimensional directions are fixed on the module mounting plate. The LED lamp disclosed by the invention has higher light ray utilization rate, the lighting uniformity is greatly increased, the light energy of an LED light source can be fully utilized, the light efficiency is high, power needed for the lighting demand is small and energy-saving and environment-friendly requirements are realized.

The invention relates to the technical field of table lamps, in particular to a table lamp with a detachable outer cover and an illuminating system. The table lamp with the detachable outer cover comprises a lamp base, a lamp cap and a lamp pole used for connecting the lamp base with the lamp cap. The lamp cap comprises a lampshade and a shield plate arranged on an opening of the lampshade and used for mounting of a quantum dot LED light source. The shield plate is in an arc shape. The light emitting face of a lamp band faces the inner wall of the lampshade, and a light path irradiates the inner wall of the lampshade and is reflected out through the inner wall of the lampshade. The illuminating effect is better after reflecting, and light spots and dazzle are avoided; light is soft, natural and high in developing and is close to sunlight; the eyestrain of users is reduced; and best illumination is provided for the users, dazzle is avoided, and the high light efficiency is guaranteed. The lampshade comprises an inner cover and the first outer cover, and the first outer cover is detachably connected with the inner cover and can be arranged to be a decoration plate. Interestingness can be improved, and the fatigue of the users in longtime work can be eliminated. The illuminating system comprises a master controller and table lamps with detachable outer covers and has the above beneficial effects compared with the prior art.

The invention relates to an LED hard light device, comprising an LED and a radiator. The LED hard light device is technically characterized in that the upper part of the radiator is provided with a mounting pipe support arranged along the axial direction, and the radiator and a frame arranged at the periphery of the lower side of the radiator form a shell; a heat conduction substrate on which LEDs are evenly distributed and a light source reflecting bowl in an involute quadrangular prism structure are attached to the lower part of the radiator in the shell; the reflecting bowl consists of three inclined planes and a curved surface; an included angle between the axis vertical line of the reflecting bowl and a plane inclined in the direction of the axis of the heat conduction substrate is 56-61 degrees, and an included angle between the other two inclined planes adjacent to the inclined plane and the axis vertical line of the reflecting bowl is 20-25 degrees; an upper end bowl line of the curved surface, which is arranged opposite to the inclined plane, is arranged on the vertical parting line of the LEDs in the reflecting bowl; and the periphery of the lower part of the radiating frame is also provided with a trip strip for limiting a transparent lampshade. By adopting the structure, the evenly distributed LEDs and the reflecting bowl are matched to form cross and uniform irradiation, and two reflecting light sources are utilized, thereby the irradiation area is increased, and luminous spots are fundamentally eliminated.

The invention relates to a full-spectrum white LED device. A support is an aluminum oxide ceramic support; a glue dispensing area is arranged in the middle of the front surface of the support; a positive electrode and a negative electrode on the front surface of the support are silver, gold or aluminum-plated electrodes; a chip is a near ultraviolet LED chip; the chip is directly fixed on the surface of the glue dispensing area of the support; fluorescent powder is red, yellow and blue three-color fluorescent powder; positive and negative electrodes of the LED chip are connected with the positive and negative electrodes on the front surface of the support in a spot welding mode; and welding spots completely cover the surfaces of the positive and negative electrodes on the front surface ofthe support. The chip is completely covered by the welding spots formed by gold wires or alloy wires after being subjected to wire welding, and low cost of support production is maintained while a blackening effect of a silver-plated layer is eliminated. In an actual test, compared with a traditional copper and silver-plated electrode injection molded support and a general commercially-available large-area silver-plated aluminum oxide ceramic support, the reliability (service life) of a packaging device is improved to be from 1,000 hours to 50,000 hours while the same light effect is guaranteed.

The present invention is characterized by that in the front of LED light source a transparent plastic plate is placed, on said transparent plastic plate several through holes are cut, and formed into array light rod, the light rod is the through hole on the transparent plastic plate, its number and position are correspondent to the LED light source, a connection component is used for connecting the transparent plastic plate and light source seat into one body.

The invention relates to a stamping machine tool, in particular to a stamping machine tool with an intelligent illuminating lamp. According to the technical scheme, the stamping machine tool with theintelligent illuminating lamp comprises a stamping machine tool body and the intelligent illuminating lamp; a forwardly extending fixing frame is disposed on the upper part of a machine table of the stamping machine tool body, and the intelligent illuminating lamp is fixedly mounted on the fixing frame; the intelligent illuminating lamp comprises an outer cover, LED light sources and an intelligent monitoring camera, and the outer cover is connected with an angle-adjustable bracket through a connecting piece; a mounting plate of the LED light sources and the intelligent monitoring camera is arranged on the front side surface of the outer cover; and the intelligent monitoring camera is electrically connected to a control circuit board, and the control circuit board is provided with a storage module and a WIFI connecting module. The stamping machine tool has the advantages of realizing the integration of intelligent monitoring and industrial illumination, realizing intelligent visual management, realizing real-time monitoring of operation areas and production status to improve production capacity, reducing on-site accidents caused by human negligence and effectively improving productcompetitiveness.

The invention relates to the technical field of curved surface LEDs, and specifically relates to a preparation method of a novel WiFi intelligent control type curved surface LED display device. The preparation method comprises the following specific steps: S1, determining a project product to be of a separated module structure, and carrying out system structure design on an LED module; S2, carrying out circuit design on an infrared module, a WIFI module and an LED module; S3, after mold processing is completed, preparing a shell piece through an injection molding process; S4, carrying out SMTtechnology assembly on an LED lamp panel and a main control panel; and S5, researching and determining an assembly technology, and carrying out integral assembling on each component. A white LED lampbead is taken as a light source, multi-colored display is realized by printing different colors of printing inks on a diaphragm, and voltage difference among different colors of lamp beads is solved perfectly. A display module (integrated infrared module), a main control module and a WIFI module are separated, the interference among different signals during integration on the same PCB is reduced,and simultaneously, the exchange of each functional module is facilitated.

The invention discloses a three-wire double-color COB lamp strip which comprises a plurality of lamp strip units connected in parallel, each lamp strip unit comprises a flexible circuit board, a plurality of warm white light LED chips connected in series are arranged on the left side of the top of each flexible circuit board, and a plurality of white light LED chips connected in series are arranged on the right side of the top of each flexible circuit board. The warm white light LED chips and the white light LED chips are vertically arranged in two rows in the shape of a Chinese character'pin ', the upper surface of the flexible circuit board is provided with 2400K color temperature fluorescent powder colloid covering the white light LED chips, and the upper surface of the flexible circuit board is provided with 6500K color temperature fluorescent powder colloid covering the warm white light LED chips. And the 6500K color temperature fluorescent powder colloid is coated on the outer side of the 2400K color temperature fluorescent powder colloid. The LED lamp is large in emitting color adjustable amplitude, high in color adjustment precision, good in light mixing effect, uniform in emitting light, free of glare and convenient to use.

The invention discloses a chip mounting head with a Z-axis driven by a linear motor. The chip mounting head comprises a main body module, a linear motor assembly module, a spline assembly module, a vacuum assembly module, a bracket assembly module and a Mark camera module, and is characterized in that the linear motor assembly module, the spline assembly module, the vacuum assembly module, the bracket assembly module and the Mark camera module all adopt modular design and can be independently mounted and dismounted . According to the chip mounting head, a plurality of linear motors are adopted to drive the Z axis, each linear motor is connected with an independent suction nozzle, and the linear motors are small in size, light in weight, high in response speed and high in positioning and repeated positioning precision; the linear motors can be independently installed, installation and maintenance are convenient, and assembling and debugging time is saved.

The invention relates to a white LED light source with an infrared band added in a spectrum. The light source is composed of an LED support, an ultraviolet or near-ultraviolet LED chip (380nm-420nm) and mixed fluorescent powder glue (infrared, red, green and blue). The light emitted by the ultraviolet or near ultraviolet LED chip is utilized to activate a fluorescent powder layer on the surface togenerate mixed white light comprising near-infrared, red, green and blue bands. According to the invention, the infrared band spectrum is supplemented, so the spectrum is closer to the solar spectrum, and the white LED light source is the best choice for an existing LED to generate high-color-rendering white light which is closest to the solar spectrum. The light source can obtain a very high color rendering index, and the generated infrared light not only can promote the growth of plants, but also can be used for other special purposes needing infrared bands. Because the infrared fluorescentpowder has higher thermal stability than an infrared chip, wavelength drift is not easy to occur in use, which cannot be realized by any other light emitting mode.

The invention discloses a concise light-emitting identifier, and relates to the field of light-emitting signboards. The concise light-emitting identifier comprises a light source and a light guide body, the light source is arranged on the side wall of the light guide body, the light source is arranged in the longitudinal extending direction of the surface of the side wall, and the light source isnot higher than the light-emitting end face of the light guide body; the light-emitting direction of the light source faces the side wall, adjacent to the light source, of the light guide body. The light-emitting end face of the light guide body is processed to be consistent with a designed light emitting pattern (such as letters, characters or other patterns). The concise light-emitting identifier has the advantages that light-emitting identifiers which are not limited by width and size can be manufactured, the width of the light-emitting identifier can be narrowed to be infinitely narrow, and the critical defect that light spots are serious when the light source emits light is in the forward direction is completely avoided; the identifier has more advantages as a light spreading medium;a light-reflecting light-shielding layer can be arranged around the light guide body as needed, so that it is ensured that more light is emitted out through the light-emitting end face; the light-emitting end face is upward and is in butt joint with the light-transmitting body, and the light-emitting identifiers with various light-emitting effects can be expanded.

The invention relates to a white light LED light mixing mode and a prepared lighting device, and belongs to the LED technical field; the white light LED light mixing mode comprises an LED chip, and mixes the light of single phosphor luminescence excited by the LED chip; the LED chip is coated by the single phosphor or transparency packaging glue so as to form package bodies of different colors; the package bodies are welded on a PCB plate with a printing circuit according to certain rules; a multi-branch circuit can control the various color LED luminous intensity; the method can adjust the current output proportion of multi-path drive power supplies, thus realizing color temperature continuous changes of the white light mixed by 4 colors; the lighting device can realize the continuous adjustable output white light with the color rendering index Ra>=95, R9>=90, and color temperature and spectrum from 2700 to 7000K. In addition, the InGaN or GaN series semiconductor chip with stable performance and highly stable phosphor are employed, thus greatly improving the lighting device reliability.

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.