Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of closed LED lamp of carrying out integral heat sink, integral heat sink can be carried out to LED lamp, effectively solve the heating problem of the parts such as light source, avoid the situation occurring hot-spot, radiating efficiency is high, speed is fast, is conducive to the service life extending light fixture, structure is simple, is easy to practical.
The utility model solves the technical scheme that its technical problem adopts:
Carry out a closed LED lamp for integral heat sink, comprise power supply board, comprise the lampshade, lamp socket and the back cover that connect successively, lampshade has the first cavity, and lamp socket has the second cavity, and back cover has the 3rd cavity, between cavity, direct connection does not occur;
Lampshade is sealed type lampshade, and power supply board is arranged in the first cavity, and the junction of lamp socket and lampshade forms air outlet, and lamp socket is also provided with some air inlets, thus at air inlet, form air flow channel between the second cavity and air outlet;
Be provided with fin and air-blast device in second cavity, fin respectively with power supply board, lamp socket can thermal conductive contact, thus at power supply board, form the passage of heat between fin and lamp socket;
Air-blast device can drive air to flow through air flow channel.
As the further improved procedure of such scheme, the passage of heat comprises heat pipe, and heat pipe is connected with fin, power supply board and lamp socket heat conduction respectively.
As the further improved procedure of such scheme, the passage of heat comprises heat-conducting plate, and heat-conducting plate is connected with heat pipe, power supply board heat conduction respectively.
As the further improved procedure of such scheme, air-blast device is aerofoil fan, and it is arranged between fin and power supply board, to realize air from fin to the flowing of power supply board.
As the further improved procedure of such scheme, heat pipe comprises parallel Plug Division, and Plug Division is connected as one by the portion of expanding;
One end of heat pipe by Plug Division grafting on a heat sink, and is finally connected with lamp socket, and the other end is connected with the upper surface of heat-conducting plate by the portion of expanding, and the lower surface of heat-conducting plate and power supply board are fitted;
Aerofoil fan is by expanding portion's envelope interior.
As the further improved procedure of such scheme, lamp socket, fin are provided with the cylinder boss of hollow in the junction with heat pipe, and heat pipe is plugged in cylinder boss.
As the further improved procedure of such scheme, heat pipe is 2 places, and the two is set up in parallel.
As the further improved procedure of such scheme, fin is 3 places, and the axis along light fixture is stacked, which is provided with some air vents.
As the further improved procedure of such scheme, comprise sealing gasket, it is located between lamp socket and lampshade, isolated first cavity and the second cavity.
As the further improved procedure of such scheme, lamp socket comprises metalwork, and the moulding to be connected with metalwork, metalwork comprises base plate, the surrounding of base plate is provided with sidewall, forms breach between adjacent sidewall, and moulding is provided with the extension corresponding with breach, and be connected with sidewall by it, sidewall is provided with flange in the junction of the two.
The beneficial effects of the utility model are:
Can carry out integral heat sink to LED lamp, effectively solve the heating problem of the parts such as light source, avoid the situation occurring hot-spot, radiating efficiency is high, speed is fast, and be conducive to the service life extending light fixture, structure is simple, is easy to practical.
Detailed description of the invention
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, scheme and effect fully.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
It should be noted that, if no special instructions, when a certain feature is called as " fixing ", " connection " in another feature, it can directly be fixed, be connected in another feature, also indirectly can fix, be connected in another feature.In addition, it is only relative to the mutual alignment relation of each part of the utility model in accompanying drawing that the upper and lower, left and right used in the utility model etc. describe.
In addition, unless otherwise defined, all technology used herein are identical with the implication that those skilled in the art understand usually with scientific terminology.The term used in description is herein to describe specific embodiment, instead of in order to limit the present invention.Term as used herein " and/or " comprise the arbitrary combination of one or more relevant Listed Items.
Referring to figs. 1 through Fig. 3, show an embodiment of the present utility model, comprise power supply board 10, lampshade 20, lamp socket 30 and back cover 40, lampshade 20 has the first cavity 201, and lamp socket 30 has the second cavity 301, and back cover 40 has the 3rd cavity 401, wherein, first cavity 201 is light-source chamber, settles power supply board 10, second cavity 301 to be heat dissipation cavity in it, thermal component is provided with in it, realizing the integral heat sink of light fixture, be mounted with the drive plate of light fixture in the 3rd cavity 401, is actuator chamber.There is not direct connection between cavity, thus avoid heat dissipation cavity operationally to inject foreign material to light-source chamber and actuator chamber, contribute to the service life extending light fixture.
In the utility model, lampshade 20 is sealed type lampshade, concrete, and it is approximately spherical, and one end is provided with through hole, and for inner cabling, power supply board 10 is coated on lampshade inside, effectively can prevent the interference of dust and other impurities.Lampshade 20 forms air outlet 34 with the junction of lamp socket 30, lamp socket 30 is also provided with some air inlets 31, like this, just between air inlet 31, second cavity 301 and air outlet 34, forms air flow channel, air can flow through described air flow channel, lowers the temperature to light fixture.
Second cavity 301 also comprises fin 50 and air-blast device 80, wherein fin 50 respectively with power supply board 10, lamp socket 30 can thermal conductive contact, thus at power supply board 10, form the passage of heat between fin 50 and lamp socket 30.The heat that power supply board 10 produces is passed on fin on the one hand, and by air-blast device 80 drive distinguished and admirable carry out air-cooled, also can being passed on lamp socket 30 by fin on the other hand, by completing heat radiation with the heat exchange of external environment, thus realizing the design of integral heat sink.
With reference to Fig. 4, in order to the sight of the heat-sinking capability and light fixture entirety that increase lamp socket, lamp socket 30 comprises metalwork 32 and the moulding 33 be coated on metalwork 32, wherein, metalwork 32 comprises base plate, the surrounding of base plate is provided with sidewall 320, which is provided with described air inlet 31, forms breach 321 between adjacent sidewall 320.Position moulding 33 corresponding to breach 321 is provided with extension 330, and be connected on metalwork 32 by this extension 330, in order to prevent the injection defect caused because metalwork 32 is excessively thin, the position that sidewall 321 is being connected with moulding 33 is provided with flange 322.
With reference to Fig. 5 and Fig. 6, thermal component comprises fin 50, and it is arranged in the second cavity 301, can heat conduction be connected respectively with power supply board 10, lamp socket 30, after the heat on power supply board 10 is passed to fin 50, is taken away by the air-flow in air flow channel.Because fin 50 has larger area of dissipation, therefore effectively can improve radiating efficiency.
Preferably, fin 50 is 3, and the axis along light fixture is stacked, further expands area of dissipation, and it is also provided with some air vents, is convenient to air-flow and better flows between fins.
A kind of detailed description of the invention be connected with circuit board thermal conductive as fin, include heat pipe 60, preferably, heat pipe 60 comprises the Plug Division 61 be arranged in parallel, Plug Division 61 is connected as one by the portion of expanding 62 of bottom, concrete, the portion of expanding comprises the circular arc pipeline of both sides and connects the horizontal pipe of circular arc pipeline.One end of heat pipe 60 is plugged on fin 50 by described Plug Division, and is finally connected with metalwork 32, and the other end is connected with power supply board 10 heat conduction, thus realizes heat in power supply board 10, transmission between fin 50 and lamp socket 30.
Preferably, heat pipe 60 is made up of Heat Conduction Material, as copper pipe etc.In the present embodiment, heat pipe 60 is 2, and the two is set up in parallel.
Further, be also provided with heat-conducting plate 70, it is connected with heat pipe 60, power supply board 10 heat conduction respectively.Concrete, lower surface and the power supply board 10 of heat-conducting plate 70 are fitted, and maximized transmission is from the heat of circuit board; Its upper surface is provided with groove 71, and the portion of expanding 62 of heat pipe 60 is chimeric within it, for expanding the contact area of the two.By arranging heat-conducting plate 70 and expanding portion 62, the heat transmission speed between power supply board 10 and fin can be accelerated, be convenient to quick heat radiating.
In order to further accelerate the speed of heat exchange, fin 50, metalwork 32 are being provided with the cylinder boss 51 of hollow with heat pipe 60 junction, and heat pipe 60 is plugged in described cylinder boss, strengthen the contact area with fin 50, lamp socket 30.
In the present embodiment, air-blast device 80 is preferably aerofoil fan, its by the portion of expanding 62 envelope interior.Under the driving of fan, air is entered by air inlet 31, carries out air-cooled to fin 50, heat pipe 60 and heat-conducting plate 70, flow out from air outlet 34 again, along the outer surface loss of lampshade 20, while to inside cavity heat radiation, the heat radiation of lampshade and light source can also be taken into account.
With reference to Fig. 2, comprise sealing gasket 90, it is arranged between power supply board 10 and lamp socket 30, the first cavity 201 and the second cavity 301 is separated, prevents the dust in air flow channel from entering in lampshade, affect the illumination effect of light source.
More than that better enforcement of the present utility model is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.