CN103322537A - Light-emitting diode (LED) bulb lamp - Google Patents
Light-emitting diode (LED) bulb lamp Download PDFInfo
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- CN103322537A CN103322537A CN2013102057048A CN201310205704A CN103322537A CN 103322537 A CN103322537 A CN 103322537A CN 2013102057048 A CN2013102057048 A CN 2013102057048A CN 201310205704 A CN201310205704 A CN 201310205704A CN 103322537 A CN103322537 A CN 103322537A
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Abstract
The invention discloses an LED bulb lamp. The LED bulb lamp comprises a lamp holder, a liner, a power module, a cooling lamp cup, a cooling substrate, an LED light-emitting plate and a lamp shade which are connected in a matched mode, wherein the lamp holder is arranged at the upper end of the liner, the liner is made of a heat-insulating material, the power module is arranged inside the liner, the liner is filled with a heat-conducting material, the cooling lamp cup comprises an inner casing and an outer casing, a cavity is formed in the center of the inner casing, the liner is arranged inside the cavity, an annular band gap space is formed between the inner casing and the outer casing and separated into a plurality of ventilating ducts which are through in an up-and-down mode, a plurality of cooling fins which are connected with the inner casing and the outer casing are arranged inside the band gap space, the band gap space is separated by the cooling fins to form the ventilating ducts, a bottom plate is arranged at the lower end of the inner casing, and the cooling substrate, the LED light-emitting plate and the lamp shade are installed on the bottom plate sequentially. According to the LED bulb lamp, the good cooling effect is achieved through the method that separated cooling of a power supply and a light-emitting portion is performed.
Description
Technical field
The present invention relates to the LED lighting field, be specifically related to a kind of LED bulb lamp.
Background technology
Led light source is acknowledged as the lighting source of tool development prospect of 21 century, the advantages such as its environmental protection, the life-span is long, energy-conservation, reliability is high, light efficiency is good, volume is little make the relatively traditional incandescent lamp of led light source, fluorescent lamp, electricity-saving lamp etc. have larger application prospect.
Along with the development of LED technology, the high light efficiency of LED, super brightness, the innovation of panchromaticization development, its specification requirement to Design of Luminaires, application is more and more higher.How improving lamp structure, prolonging service lives of lamps, raising energy-saving horizontal, solve heat dissipation problem, optimizing optical and design, save production cost etc., is the field of always emphasis research and development of industry breakthrough.Particularly the LED lighting engineering is relatively ripe now, the LED illumination enters the stage of applying, how to improve lamp structure, prolonging service lives of lamps, how making it to be more conducive to marketing uses, each corner that the LED lamp applications is entered society, replace conventional light source, especially the main flow direction of industry research and development.
Existing LED bulb lamp is mainly used in indoor environment, such as ceiling etc.Although the life-span of led chip is higher, because life-span of light fixture not only is decided by the life-span of led chip, the design of its fitting structure, and life-span of power supply etc. all can have influence on life-span of light fixture integral body.
In the design of fitting structure, radiator structure is the emphasis of studying in the industry always.The radiating effect of light fixture is relatively poor, then not only can affect light decay, also can affect lamp life, and is serious even can namely can cause in a short time light fixture " dead lamp ".The heat that traditional radiating mode mostly is greatly by LED is produced is transmitted on the radiator, reaches radiating effect by radiator with the heat exchange that naturally contacts of air.But this radiating mode radiating efficiency is lower, be used for lower-powered light fixture light fixture still can, in case be used for the larger light fixture of power, its radiating effect just seems that grabbing the flap has seen elbow.Someone was for reaching preferably radiating effect afterwards, and with the volume increase of radiator, although played certain effect, this mode has improved cost, and has increased the volume of space hold, obviously is not optimal scheme.
In actual illumination, the LED bulb lamp is in order to replace traditional bulb lamp illumination.Because traditional bulb lamp light efficiency is low, energy consumption is high, is to belong to traditional high energy consumption lighting source that will be replaced by LED.Yet although the light efficiency of LED bulb lamp is very high, traditional bulb lamp that replace is fully still had any problem.In fact because of the finite volume of bulb lamp, the LED bulb lamp can't be accomplished sufficiently high power, otherwise because the integral heat sink ability causes the lamp housing excess Temperature not, causes at last the serious light decay of LED even dead lamp.Certainly, if skin temperature is also dangerous above 90 ℃, can't pass security regulations.How under limited volume, strengthen the radiating efficiency of lamp outer casing, bulb lamp integral body so that the power of LED bulb lamp can security improvement to enough brightness demands of the traditional bulb lamp of replacement, to comprehensive replacement, be illuminating industry one large urgent task.
Chinese patent ZL201120034187.9, a kind of structure of LED bulb lamp is disclosed, its light fixture includes a radiating seat, a light source joint chair and a lamp housing, radiating seat has a heat conducting base and an insulation shell, the opening part of lamp housing is provided with an accommodation space, this accommodation space is to insert for radiating seat, with so that the opening inner peripheral of lamp housing and radiating fin periphery keep the interval, and be formed with a convection channel at this place, and be formed with at this place more than one to head piece, offer again the steam vent more than in the contiguous end face of lamp housing place, this steam vent is with relative to head piece.The described technical scheme of this patent has more unreasonable part, at first, the heat of power module manufacturing is considerable, even the heat of making as many as light source module, for keeping the life-span of light source module, should not make the public cooling system of power module and light source module, because this can reduce the radiating efficiency of light source module greatly, in the prior art level, the research staff generally can not be familiar with severe principle wherein, always keep in mind the function that improves radiating seat as far as possible, thereby radiating seat is used for the heat radiation of other side simultaneously, and do not go to consider be absorbed in the heat radiation of light source module; Secondly, undue thermal convection current, consequently, hot-air just flows out in the lamp chamber outside the lamp after a lot of bother, and this is unfavorable for dispelling the heat in fact, and this also is that those skilled in the art are to the inadequate reason of radiating understanding.
Summary of the invention
The object of the invention is to design the LED bulb lamp of a kind of thermoelectricity minute discrete heat for solving deficiency of the prior art, divide the mode of discrete heat by its power supply and luminous component, reach good radiating effect.
For realizing that the technical scheme that the object of the invention adopts is: a kind of LED bulb lamp, comprise lamp holder, inner bag, power module, heat radiation lamp cup, heat-radiating substrate, LED luminous plaque and lampshade that coupling connects, described lamp holder is located at the inner bag upper end, inner bag is made by heat-barrier material, power module is located in the inner bag, also is filled with Heat Conduction Material in the inner bag; Described heat radiation lamp cup comprises inner housing and shell body, and the center of described inner housing is cavity, and described inner bag is located in the cavity; Form the band gap space of annular between described inner housing and the shell body, be spaced apart the ventilating duct of some up/down perforations; Be provided with the radiating fin of some connection inner housings and shell body in the band gap space, the band gap space is formed described ventilating duct by this radiating fin interval; Described inner housing lower end is provided with base plate, and described heat-radiating substrate, LED luminous plaque and lampshade are installed on the base plate successively.
LED bulb lamp of the present invention, power module is fixed in the inner bag by Heat Conduction Material, Heat Conduction Material has played the effect of fixing, insulation, dustproof, waterproof and heat conduction to power module, by adopting the obstruct of the inner bag that heat-barrier material makes, the heat that power module produces can not conduct to heat radiation lamp cup, but under the guiding of Heat Conduction Material, be transmitted to the lamp holder place, dispel the heat by lamp holder.Heat radiation lamp cup then attentively is used for the heat radiation of LED luminous plaque, and this separately mode of two heat radiation approach greatly reduces the power module heat to the impact of LED luminous plaque, thereby has greatly improved the radiating effect of Lamp cup to the LED luminous plaque.
Simultaneously, heat radiation lamp cup adopts bivalve system, has inside and outside two heat radiation walls, sees through a plurality of radiating fins between inside and outside two heat radiation walls and connects, and has greatly increased the area of dissipation of heat radiation lamp cup.The design of ventilating duct between the inner and outer shell, also so that the air of the ventilating duct of flowing through adds strong convection, form stack effect, air rises after being heated in ventilating duct, outside colder air enters from the air intake vent of bottom, gap, from bottom to top flows, from the air outlet outflow on top, rapidly the heat of radiator internal layer heat radiation wall and outer heat radiation wall is taken away, greatly promoted the radiating efficiency of bulb lamp.
Preferential, heat-barrier material described above is resin.
Preferential, Heat Conduction Material described above is heat conductive silica gel, is used for heat conduction and is fixedly installed on the interior power module of inner bag, and the electrical breakdown reliability that improves power module.
Heat Conduction Material and heat-barrier material are current material, and more sale on the market is considered from cost and performance, preferentially selects above-mentioned material.
Preferential, described annular band gap space forms the gap between shell body medial surface and the inner housing lateral surface, and this gap broadens from top to bottom gradually; The diameter of described shell body lower end is 1.5 times to 2.5 times of inner housing lower end diameter.Further, this gap broadens gradually with the trend of power side from top to bottom.
The size in gap is worthy of careful study, and upper air outlet is as far as possible little, and the gap of below is as far as possible greatly to form similar chimney-like, the large space of chimney below is in order to take in the air sinuous flow, along with chimney dwindles upward, the air sinuous flow is made in order be advection gradually, thereby obtain fast moving air stream in the exit.And adopt the variation tendency of power side, more meet the designing requirement of hydromechanics.
Preferential, described radiating fin has different length-width ratios in the differing heights position, and its length-width ratio of lower position is larger, and its length-width ratio in lowest positions is 2 to 4.The quantity of radiating fin is 5 to 8, evenly distributes radially.
Being designed with of radiating fin is exquisite, according to the thermal resistivity of heat radiation lamp cup unlike material, and the designing requirement of inner and outer shell temperature difference size, radiating fin should have a suitable thickness relationship.Adopt 2 to 4 times design, and specific distributed number, the temperature difference of inner and outer shell usually can be controlled in 5 to 10 degree.
Preferential, the thickness of described base plate is 1/8 to 1/6 of base plate diameter.
Being designed with of base plate is exquisite, and base plate is that the heat of heat radiation lamp cup and heat-radiating substrate is transmitted the interface, considers the horizontal heat transference efficiency of base plate, and vertical heat transference efficiency of heat radiation lamp cup integral body, and the consideration of cost aspect, and its thickness is answered appropriate design.
Preferential, the diameter of described heat-radiating substrate is greater than the base plate diameter, and less than the shell body lower end diameter; Gap length between heat-radiating substrate and the shell body is 10% to 20% of shell body lower end diameter.
Being designed with of heat-radiating substrate is exquisite, the heat that the LED luminous plaque produces divides does two parts heat radiation, a part is by the periphery of heat-radiating substrate 4 and the cold airflow exchange heat radiation that enters at first ventilating duct, another part conducts to heat radiation lamp cup by the bottom that contacts with heat-radiating substrate, dispel the heat by heat radiation lamp cup, heat radiation lamp cup further heats the air in the ventilating duct, hot air rising, flow out from upper air outlet, the thin narrow structure of upper air outlet is so that the air stream that flows out from upper air outlet has higher flow velocity, this higher flow velocity has guaranteed that the air that can drive the heat radiation lamp cup periphery rises, near and the Air Flow the promotion lamp holder, namely accelerate the heat radiation of heat radiation lamp cup shell body, accelerated simultaneously the heat radiation of cap part.
Preferential, heat radiation lamp cup described above is made for the aluminium through surface oxidation.
Preferential, shell body described above is made by aluminum alloy materials, and has coarse lateral surface.Coarse outer surface so that the area of the heat transfer of the skin of radiator heat radiation wall increases, is conducive to improve radiating efficiency.
Preferential, the two sides of the medial surface of described shell body, the lateral surface of inner housing and radiating fin are smooth surface.Smooth surface is conducive to improve radiating efficiency so that the Air Flow between the slit is more smooth and easy.
Preferential, the structure that described shell body, inner housing, radiating fin and base plate are formed in one.
Adopt integrated seamless connecting structure mode, heat is seamless delivery on heat radiation lamp cup, and transmission efficiency is very high, meets the requirement of high cooling efficiency.
Preferential, described lamp holder is Waterproof lampholder, is tightly connected between described inner bag and the cavity, is tightly connected between heat-radiating substrate and the base plate, is tightly connected between lampshade and the heat-radiating substrate.
Preferential, described heat-radiating substrate comprises substrate body and installing ring, and substrate body simultaneously is installed on the base plate, and another side is installed the LED luminous plaque; Described lampshade comprises lampshade body and closing-in structure, and closing-in structure is installed in the installing ring of heat-radiating substrate by embedded mode.The wherein one side of heat-radiating substrate described above is connected with base plate by Heat Conduction Material.This programme has designed a kind of preferential syndeton mode.
Preferential, described inner bag lateral surface is provided with the importing bar, and described cavity wall is provided with and the lead-in groove that imports the bar coupling, is used for the guiding inner bag and inserts in the cavity; Described inner bag lower end is provided with locating notch, and described cavity inner bottom surface is provided with the locating convex block with the locating notch coupling, is used for the location after inner bag inserts cavity.This programme has designed a kind of preferential syndeton mode.
Preferential, lamp plate described above is provided with a plurality of LED packagings.Lampshade described above is hemispheric glass lamp shade, and lampshade and gripper shoe are formed for holding the cavity of lamp plate.This programme has designed a kind of preferential syndeton mode.
Description of drawings
Fig. 1 is the exploded view of embodiment of the invention LED bulb lamp
Fig. 2 is the three-dimensional view of embodiment of the invention LED bulb lamp
Fig. 3 is the front view of embodiment of the invention LED bulb lamp
Fig. 4 is the upward view of embodiment of the invention LED bulb lamp
Fig. 5 is the top view of embodiment of the invention LED bulb lamp
Fig. 6 is the A-A cross section view of Fig. 5
Fig. 7 is the three-dimensional view of heat radiation lamp cup in the embodiment of the invention
Fig. 8 is the front view of heat radiation lamp cup in the embodiment of the invention
Fig. 9 is the cross section view of heat radiation lamp cup in the embodiment of the invention
Figure 10 is the upward view of heat radiation lamp cup in the embodiment of the invention
Figure 11 is the top view of heat radiation lamp cup in the embodiment of the invention
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Extremely shown in Figure 6 such as Fig. 1, the structural representation of a kind of LED bulb lamp of the present embodiment, it comprises lamp holder 1, inner bag 2, power module, heat radiation lamp cup 3, heat-radiating substrate 4, LED luminous plaque 5 and lampshade 6 that coupling connects.
Described lamp holder 1 is used for engaging with the lamp socket that is connected to the power supplys such as civil power, low tension, its end that is used for the connection lamp socket is the helicitic texture of metallic conduction, heat conduction, the structure of this cap part is consistent with the E27 type lamp holder of traditional bulb lamp, be used for conveniently replacing traditional bulb lamp, and extra changer lamp socket.The other end of lamp holder 1 is connected with inner bag 2.
Described inner bag 2 is made by insulation, heat insulation, heat-resisting material, is the tubular structure of both ends open, and the one end is connected with lamp holder 1, and the other end is provided with locating notch 22 and imports bar 21.Inner bag 2 is used for fixedly lamp holder 1, holds power module, makes electric insulation between lamp holder 1 and power module and the heat radiation lamp cup 3.
Described power module is located in the inner chamber of inner bag 2, and is electrically connected with the lamp holder 1 of being located at inner bag 2 one ends.Power module is required according to LED luminous plaque 5, is used for converting civil power to satisfactory direct current, to supply with LED luminous plaque 5.Simultaneously, the lumen loading of inner bag 2 has the silica gel material of heat conduction, insulation.Silica gel is the power module sealed insulation, and the heat of power module is transmitted to metallic lamp holder 1 place, by metallic lamp holder 1 heat radiation; In the practical application, screw the lamp socket that is connected with lamp holder 1 and also have certain radiating effect, this moment, the heat of lamp holder 1 can conduct to lamp socket again, thereby had the good heat conductive effect.
Thisly utilize heat conductive silica gel that the heat of power module is conducted to lamp holder 1 to dispel the heat, utilize the mode of inner bag 2 and heat radiation lamp cup 3 thermal isolations, well the heat of power module is controlled, make the heat radiation lamp cup 3 wholwe-hearted heat sinking functions that are used for LED luminous plaque 5.Need know in the prior art that the power module technology is comparatively ripe, performance is more stable, even cooling measure in addition not, it is enough to bear the heat that self produces and not obviously performance and life-span.But the led chip technology still has many improved places for the treatment of now, such as the impact that is easily saved temperature, heat, if the self-radiating performance is not enough, is easy to cause " dead lamp " common phenomena such as " light decays ".
To shown in Figure 11, described heat radiation lamp cup 3 comprises inner housing 34 and shell body 31, is connected and fixed by some radiating fins that are evenly arranged 35 between inner housing 34 and the shell body 31 such as Fig. 7.These radiating fins 35 radially, one is connected on inner housing 34 lateral surfaces and the shell body medial surface 31b.The gradient of inner housing 34 lateral surfaces is greater than the gradient of shell body medial surface 31b, so that form up-narrow and down-wide annular space between the inside and outside housing, radiating fin 35 is divided into several up and down ventilating ducts 32 of admittance with this annular space.
After the heat of LED luminous plaque 5 passed to heat radiation lamp cup 3, heat radiation lamp cup 3 surface can be with heated with ambient air, the air rear rising of being heated, and the cold air of below is filled up, thereby forms a kind of spontaneous thermal convection current.This situation is embodied in ventilating duct 32 when inner, because the up-narrow and down-wide characteristic of ventilating duct 32, the hot-air speed of rising can be more and more faster, thereby form higher cross-ventilation at air outlet 33 places.
Described inner housing 34 comprises the inner chamber that is formed by the encirclement of inner casing medial surface, and the inner chamber upper end open is used for inserting fixing for inner bag 2; The inner chamber lower end is provided with integrated base plate 36, props up till this base plate 36 after inner bag 2 inserts inner chamber.The medial surface of inner chamber is provided with lead-in groove 38, is used for the importing bar 21 in guiding inner bag 2 outsides, and inner bag 2 is inserted in the inner chamber along constant bearing.Also be provided with locating convex block 39 on the base plate 36, be complementary with the locating notch 22 on the inner bag 2, its role is to make inner bag 2 further fixing, because what the lamp holder of this LED bulb lamp 1 adopted is traditional Rotatable lamp holder, for preventing that inner bag 2 from becoming flexible damage because of the exertin rotation, import the situation of bar 21 and lead-in groove 38 dislocations, therefore increase the setting of locating notch 22 and locating convex block 39.Another function of locating notch 22 and locating convex block 39 is, isolates heat conductive silica gel and contacts with the direct of base plate 36; In the actual fabrication, locating notch 22 can play a mark effect, make the endmost surface position of heat conductive silica gel can not surpass this gap position, the support of recycling locating convex block 39, further make heat conductive silica gel away from base plate 36, thereby the heat that power module distributes can not passed to base plate 36 by heat conductive silica gel.
Described importing bar 21 is cylindrical-shaped structure, and its end face is provided with screw, and screw arranges along importing inner trend of bar.Corresponding on the base plate 36, be provided with the screw socket 361 with the screw coupling, be used for passing for screw and fix.Inner bag 2 fixes inner bag 2 and heat radiation lamp cup 3 by this mode after being directed into inner chamber.Why importing on the bar 21 and establish screw, is that its thickness is not enough to hold the screw of a normal size because the shell of inner bag 2 is usually thinner.Establish screw at importing bar 21 and have the dual-purpose effect of one, space and cost have been saved in cleverly design.
Also be provided with on the described base plate 36 and run through base plate through wires hole 37 up and down, the electric wire of drawing from power module passes base plate 36 from this through wires hole 37 and is electrically connected with LED luminous plaque 5.
Structure about the lateral surface of described inner housing 34 preferentially is set to vertically perhaps is that the top diameter is large, and the situation that the below diameter is little can not blocked the upper air outlet 33 of ventilating duct 32 to guarantee in the vertical direction.As shown in figure 10, the upward view of heat radiation lamp cup 3, under look up, can see complete upper air outlet 33.
Described shell body 31 comprises curved side facial 311 and extends side surface part 312, and from the cutaway view of Fig. 9 as seen, described curved side facial 311 be outside parabola shaped, and its diameter becomes greatly by the progression of power side from top to bottom.During to facial 311 lower end position of curved side, its diameter at least diameter than inner housing is large more than 1.5 times, in the present embodiment preferred 2 times.Its benefit is, can increase the diameter of shell body lower end in limited distance as far as possible, and this arcuate flanks is conducive to be conducive to the heat radiation of radiator 3 at upper air outlet 33 places formation air-flow at a high speed; Simultaneously, Air Flow became possibility near air-flow at a high speed made and promotes lamp holder 1, had also further increased the radiating efficiency of 1 pair of power module of lamp holder.In addition, up-narrow and down-wide ventilating duct 32 can form stack effect, and the quickening outside air enters from the through hole of ventilating duct 32 belows, flows out from upper air outlet 33, and the heat of heat radiation lamp cup 3 is taken away fast.
Described extension side surface part 312 is connected in the lower end of curved side face 311, and its lower limb 30b exceeds the base plate 36 of described inner housing 34.
Described heat radiation lamp cup 3 is one-body molded, makes for the aluminium through surface oxidation, and the side of the medial surface 31b of its shell body 31, the lateral surface of inner housing 34 and radiating fin 35 is smooth surface.Traditional way is for increasing area of dissipation, usually can carry out roughening to the surface of radiating equipment and process.Traditional method is suitable in the ordinary course of things, but also inapplicable in the ventilating duct 32 in the present embodiment, because coarse surface easily causes the rising thermal current not smooth, has hindered the speed of Air Flow.The perisporium of ventilating duct 32 is made as smooth surface structure, is conducive to Air Flow, form air-flow at a high speed, accelerate the inside and outside air exchange speed of heat radiation lamp cup.
The lower surface 351 of described radiating fin 35 flushes with the lower surface of base plate 36, makes things convenient for the installation of heat-radiating substrate 4.
Described heat-radiating substrate 4 comprises substrate body 41 and installing ring 42, and substrate body 41 is discoideus structure, and its diameter is 1.5 times to 2 times of base plate diameter greater than the diameter of heat radiation lamp cup inner housing base plate 36.Why with the diameter setting of substrate body 41 greater than base plate 36, this is the principle that has taken into full account Natural Heat Convection.Distance between the extension side surface part 312 of substrate body 41 edges and shell body should be suitable, can not be too little, and too little air is not easy to enter in the ventilating duct 32, has affected convection effects; Can not be too large, too large cause heat-radiating substrate 4 too little, LED luminous plaque 5 also diminishes, in the situation that require bulb lamp power constant, and diminishing of heat-radiating substrate 4 and LED luminous plaque 5, inevitable so that its power density increase, the caloric value that is unit are raises, and this is unfavorable for dispelling the heat.In the actual design, we require heat-radiating substrate 4 and LED luminous plaque 5 to increase as far as possible, to reduce its power density, then the free convection that utilizes ventilating duct 32 porch to form, and the convection current in the ventilating duct 32 reaches more excellent radiating effect, thereby the spacing of heat-radiating substrate 4 and extension side surface part 312 is too little too greatly all improper, must get suitable value.The value that the inventor designs the present embodiment is that heat-radiating substrate 4 is 10% to 20% of extension side surface part 312 radiuses with the spacing size of extending side surface part 312.The spacing of so-called heat-radiating substrate 4 and extension side surface part 312 refers to the distance between heat-radiating substrate 4 lateral surfaces and extension side surface part 312 medial surfaces, and so-called side surface part 312 radiuses that extend should refer to extend the inside radius of side surface part 312.
Be provided with in the lower surface 351 of radiating fin 35 for the screw 352 that heat-radiating substrate 4 is installed, substrate body 41 is provided with corresponding screw socket, and heat radiation lamp cup 3 is connected with heat-radiating substrate and is closely connected by the fixing mode of this screw.Also be provided with another through wires hole of corresponding base plate 36 through wires holes 37 on the substrate body 41, the electric wire of drawing from power module passes the through wires hole that base plate 36 is connected with substrate body and is connected with the LED luminous plaque 5 of being located at substrate body 41 another sides.
Described installing ring 42 is located at the periphery of substrate body 41, and is protruding towards lampshade 6 one sides along its periphery.Its role is to install lampshade 6 and increase radiating mode.When ventilating duct 32 air intake vent places produce cross-ventilation, colder air at first passes through the lateral surface of installing ring 42, because heat-radiating substrate 4 directly contacts LED luminous plaque 5, carrier as at first heat conduction, the relative heat radiation lamp cup of its temperature 3 is higher, the cold air convection very first time acts on one and is located on the installing ring 42 on the substrate body 41, and radiating effect is very good.After the slit through ventilating duct 32 entrances, its inside is open situation suddenly, so that the part cold air acts on the back portion that heat-radiating substrate 4 exceeds base plate 36 in ventilating duct 32 interior generation convection current, has further increased radiating effect.
Therefore, the heat that LED luminous plaque 5 produces divides does two parts heat radiation, a part is by the periphery of heat-radiating substrate 4 and the cold airflow exchange heat radiation that enters at first ventilating duct 32, another part conducts to heat radiation lamp cup 3 by the bottom that contacts with heat-radiating substrate 4, by heat radiation lamp cup 3 heat radiations, air in 3 pairs of ventilating ducts of heat radiation lamp cup 32 further heats, hot air rising, flow out from upper air outlet 33, upper air outlet 33 thin narrow structures are so that the air stream that flows out from upper air outlet has higher flow velocity, this higher flow velocity has guaranteed that the air that can drive heat radiation lamp cup 3 peripheries rises, near and the Air Flow the promotion lamp holder 1, namely accelerate the heat radiation of heat radiation lamp cup 3 shell bodies 31, accelerated simultaneously the heat radiation of lamp holder 1 part.
Dotted arrow has shown in ventilating duct 32 as shown in Figure 6, and the cross-ventilated path outside heat radiation lamp cup 3.Dotted arrow shown in Figure 9 has then shown in the situation of single heat radiation lamp cup 3 cross-ventilated path.
Described LED lamp plate 5 is prior art, which is provided with several LED unit of luminous.
Described lampshade 6 comprises lampshade body and closing-in structure 61, the lampshade body is the part orbicule, such as part chondritics such as hemisphere, 1/3 balls, the maximum gauge of lampshade body is more than or equal to the maximum gauge of shell body 31, as shown in Figure 4, when upwards observing under bulb lamp, lampshade 6 has blocked the sight line of other structures of bulb lamp.
Closing-in structure 61 is located at the unlimited place of lampshade 6, is used for shrinking opening, so that lampshade 6 can be installed on the heat-radiating substrate 4, as shown in Figure 6, during installation, closing-in structure 61 is embedded in the installing ring 42 of heat-radiating substrate 4.
As shown in Figure 10, described radiating fin 35 has different length-width ratios in the differing heights position, and its length-width ratio of lower position is larger, and it is 3 in the length L of lowest positions and the ratio of width d.In addition, the quantity of radiating fin is 6, evenly distributes radially.
In addition, when described lamp holder 1 adopts Waterproof lampholder, be tightly connected between described inner bag 2 and the cavity, be tightly connected between heat-radiating substrate 4 and the base plate 36, be tightly connected between lampshade 6 and the heat-radiating substrate 4.LED bulb lamp of the present invention has good waterproof moisture-proof effect.In the prior art, a lot of traditional bulb lamps are applied in the agricultural greenhouse, in the hole, ore deposit, mine, chemical plant etc. some relatively in non-outdoor environments of humidity, the humidity resistance of LED bulb lamp is not good in the prior art, is to hinder the reason that the LED lamp replaces conventional lamp yet.
After the water proof type LED of the invention described above connects waterproof socket, namely can be used for as seen having good replacement, serviceability in the environment of the open airs such as farmland again.
The according to the above description announcement of book and instruction, those skilled in the art in the invention can also change and revise above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the present invention just for convenience of description.
Claims (10)
1. a LED bulb lamp comprises lamp holder, inner bag, power module, heat radiation lamp cup, heat-radiating substrate, LED luminous plaque and lampshade that coupling connects, it is characterized in that:
Described lamp holder is located at the inner bag upper end, and inner bag is made by heat-barrier material, and power module is located in the inner bag, also is filled with Heat Conduction Material in the inner bag;
Described heat radiation lamp cup comprises inner housing and shell body, and the center of described inner housing is cavity, and described inner bag is located in the cavity;
Form the band gap space of annular between described inner housing and the shell body, be spaced apart the ventilating duct of some up/down perforations; Be provided with the radiating fin of some connection inner housings and shell body in the band gap space, the band gap space is formed described ventilating duct by this radiating fin interval;
Described inner housing lower end is provided with base plate, and described heat-radiating substrate, LED luminous plaque and lampshade are installed on the base plate successively.
2. LED bulb lamp according to claim 1, it is characterized in that: described annular band gap space forms the gap between shell body medial surface and the inner housing lateral surface, and this gap broadens from top to bottom gradually; The diameter of described shell body lower end is 1.5 times to 2.5 times of inner housing lower end diameter.
3. LED bulb lamp according to claim 1, it is characterized in that: described radiating fin has different length-width ratios in the differing heights position, and its length-width ratio of lower position is larger, and its length-width ratio in lowest positions is 2 to 4.
4. LED bulb lamp according to claim 1, it is characterized in that: the thickness of described base plate is 1/8 to 1/6 of base plate diameter.
5. LED bulb lamp according to claim 1 is characterized in that: the diameter of described heat-radiating substrate is greater than the base plate diameter, and less than the shell body lower end diameter; Gap length between heat-radiating substrate and the shell body is 10% to 20% of shell body lower end diameter.
6. LED bulb lamp according to claim 1, it is characterized in that: the two sides of the medial surface of described shell body, the lateral surface of inner housing and radiating fin are smooth surface.
7. LED bulb lamp according to claim 1 is characterized in that: the structure that described shell body, inner housing, radiating fin and base plate are formed in one.
8. LED bulb lamp according to claim 1, it is characterized in that: described lamp holder is Waterproof lampholder, is tightly connected between described inner bag and the cavity, is tightly connected between heat-radiating substrate and the base plate, is tightly connected between lampshade and the heat-radiating substrate.
9. LED bulb lamp according to claim 1, it is characterized in that: described heat-radiating substrate comprises substrate body and installing ring, and substrate body simultaneously is installed on the base plate, and another side is installed the LED luminous plaque; Described lampshade comprises lampshade body and closing-in structure, and closing-in structure is installed in the installing ring of heat-radiating substrate by embedded mode.
10. LED bulb lamp according to claim 1, it is characterized in that: described inner bag lateral surface is provided with the importing bar, and described cavity wall is provided with and imports the lead-in groove of bar coupling, is used for the guiding inner bag and inserts in the cavity; Described inner bag lower end is provided with locating notch, and described cavity inner bottom surface is provided with the locating convex block with the locating notch coupling, is used for locating after inner bag inserts cavity.
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| CN201310205704.8A CN103322537B (en) | 2013-05-28 | 2013-05-28 | A kind of LEDbulb lamp |
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| CN201310205704.8A CN103322537B (en) | 2013-05-28 | 2013-05-28 | A kind of LEDbulb lamp |
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| CN103322537B CN103322537B (en) | 2016-08-24 |
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| CN113251332A (en) * | 2021-05-12 | 2021-08-13 | 武常雷 | Bulb cover of lamp and LED lamp |
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| CN103322537B (en) | 2016-08-24 |
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Address after: 3 building, No. 336 business building, Whampoa Road, Tianhe District, Guangdong, Guangzhou 510655, China Applicant after: Guangdong Ecorising Optoelectronic Technology Co., Ltd. Address before: 3 building, No. 336 business building, Whampoa Road, Tianhe District, Guangdong, Guangzhou 510655, China Applicant before: Guangdong Rising Investment Co., Ltd. |
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