CN203052247U

CN203052247U - Negative-pressure backflow-surface radiating type LED (Light Emitting Diode) lamp light source

Info

Publication number: CN203052247U
Application number: CN2012202991768U
Authority: CN
Inventors: 杨京
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-25
Filing date: 2012-06-25
Publication date: 2013-07-10
Anticipated expiration: 2022-06-25

Abstract

The utility model discloses a negative-pressure backflow-surface radiating type LED (Light Emitting Diode) lamp light source. The negative-pressure backflow-surface radiating type LED lamp light source comprises a light source body, a light source mask, a light source base, a light source tail seat, a light source installing board, an electric appliance control board, a fan and an LED light source. The negative-pressure backflow-surface radiating type LED lamp light source is characterized in that the light source body and the light source mask form a cylinder shape; the light source tail seat and the light source base are arranged at the two ends of the cylinder; the light source, the light source installing board and the electric appliance control board are arranged in the cylinder; and the fan is arranged on the light source base to form an independent illuminating light source.

Description

Negative pressure backflow surface radiating formula LED lamp light source

Technical field

The utility model relates to the high-power LED illumination application, by adopting new and effective radiating mode, make the led light source reduced volume, reduce cost, make it in any enclosed type and misclosure light fixture, under the prerequisite of not doing any process and remould, can directly replace the Metal halogen lamp of conventional light source, sodium vapor lamp, electricity-saving lamp and incandescent lamp, be applied to street lamp, Tunnel Lamp, bulkhead lamp capable and various open air and room lighting.

Background technology

LED can produce heat in work, if do not take cooling measure, the accumulation meeting of heat is very fast with its damage so, so the light fixture that adopts LED to do light source has radiator structure.In addition, LED is again a kind of device of surface light emitting, that is to say, it has only a face luminous, and one side is non-luminous in addition, and because structural reason, light can not penetrate face so far.

The radiating mode that the LED light fixture is traditional is to adopt Heat Conduction Material to make radiator in its non-luminous one side to dispel the heat.The example that adopts fan airstream to dispel the heat is also arranged at present, and still, the position of its heat radiation still is at the non-light-emitting area of LED.

Because LED is the device of surface light emitting, so the generation of heat equally also comes from the top layer of light-emitting area during its work.And this heat will be delivered to the radiator on the non-light-emitting area, needs through epitaxial loayer sapphire substrate, metallic reflector, insulating barrier, copper pedestal, adhesive-layer, a series of structures such as aluminium base, apparent, the obstruction that these structures are serious the transmission of heat, add the Gradient Effect of temperature, so, dispel the heat in non-light-emitting area, efficient can't improve, and under this situation, in fact the LED tube core is still worked under a higher temperature all the time.

In order to strengthen heat dissipation capacity, satisfy the LED need of work, adopt the light fixture of radiator to be merely able to adopt the way of the volume that strengthens radiator, like this, not only increase cost, and volume can't be complementary also with conventional light source, that is to say directly to substitute conventional light source.

And employing fan heat sink conception, because the low factor of non-light-emitting area radiating efficiency, also have only the ventilation of increasing to solve, like this, not only the lamp body volume is big, and the power of fan also requires bigger, in addition, in order to remedy the needs of air channel flow and ventilation, reduce volume, all to carry out structure of modification to former light fixture.Be example with the street lamp, the patent No. is 200810141603.8 utility model, and the patent No. is the utility model of ZL200920136607.7, all need carry out secondary operations at original lampshade and could satisfy job requirement, so can only accomplish limited replacement conventional light source, and be not alternative fully.

The utility model content

The purpose of this utility model is to provide a kind of cooling system of LED light fixture, the method that employing is dispelled the heat to the LED light-emitting area, improve its radiating efficiency, LED light fixture volume is reduced, and do not need the conventional lamp structure is done any processing and transformation and all can independently use at any enclosure space, to finish to traditional Metal halogen lamp sodium vapor lamp, electricity-saving lamp, incandescent lamp alternative fully.

The utility model design is as follows:

In the light-source structure of a sealing, utilize the light source body, the light source face shield, light source base, light source tailstock and light source installing plate are two cavitys that differ in size with the light-source structure internal insulation, and we are defined as vacuum cavity to the big cavity in space, the cavity little the space is defined as heat-dissipating cavity, and two cavitys are in light source tailstock part UNICOM.Two cavitys respectively have perforate at the light source base position, at the opening of vacuum cavity the negative pressure fan are housed.

Description of drawings

Fig. 1 is the signal of the utility model structural principle.

Fig. 2 is that the utility model is applied to the practical example in the conventional road lamp lampshade.

Fig. 3 is that the utility model is applied to the alternative Metal halogen lamp in general lighting place, sodium vapor lamp, the practical example during electricity-saving lamp.

Wherein, 1-vacuum cavity, 2-heat-dissipating cavity, the 3-light source base, 4-light source body, 5-light source face shield, 6-light source tailstock, 7-light source installing plate, 8-light source, 9 negative pressure fans, 10-air inlet, 11-road lamp body, the 12-street lamp reflecting shade, 13-street lamp lampshade, 14-universal standard lamp holder, 15-designs the air port especially.

In addition, band arrow lines indication is the air current flow direction.

The specific embodiment

The utility model operation principle is as follows:

As shown in Figure 1, the utility model is by light source body 4, and light source installing plate 7 and light source face shield 5 are formed vacuum cavity 1 with heat-dissipating cavity 2, and the light-emitting area of led light source 8 places among the heat-dissipating cavity 2.After the energising, negative pressure fan 9 is started working, and air-flow flows along band arrow line orientations among the figure.Because vacuum cavity 1 differs greatly with the volume of heat-dissipating cavity 2, therefore, has just formed a negative pressure in vacuum cavity 2, this negative pressure forces air-flow to accelerate to flow in heat-dissipating cavity 2.

Because this moment, the light-emitting area of led light source 8 placed in the heat-dissipating cavity, the heat that produces during again because of LED work also concentrates on light-emitting area one side, so swiftly flowing air-flow is just taken away these heats, send lamp body by vacuum cavity 1, this process has reached the purpose for the led light source heat radiation.

From above principle and general general knowledge as can be seen, the utility model because adopt dispels the heat to the led light source light-emitting area, so heat radiation directly, make the accumulation heat on the led light source reduce significantly, in addition, owing to adopt high velocity air to dispel the heat, so radiating efficiency is very high.And the fundamental difference part of the utility model and other air-flow heat dissipating methods is, not that increasing fan power and ventilation volume obtain radiating efficiency, but adopted the volume that changes two runners recently to accelerate radiating rate, so, make the miniaturization of light fixture become possibility.

Fig. 2 is the practical example that is applied to street lamp, in street lamp, because plane of illumination is unidirectional, so adopted the form of semi-circular light source cover, need to prove, in order not do any processing and to transform and directly replace Metal halogen lamp and the sodium vapor lamp that former street lamp is used, so, need install the deck that is complementary with former street lamp lamp socket 14 additional in light source base 3, in addition, the diameter of whole light source body must be less than footpath within the street lamp lamp socket.Like this, changing the position of light source in street lamp reflecting shade 12, back is consistent with original Metal halogen lamp, and the distribution curve flux of whole light fixture does not also change.In addition, because inlet and outlet of the present utility model is in an end of lamp light source together, and be positioned at outside the airtight cavity that former street lamp reflecting shade 12 and street lamp lampshade 13 constitute, so, air-flow does not participate in air-flow circulation of the present utility model in this airtight cavity, therefore, just can under the prerequisite of not carrying out any processing and transformation, directly replace the original used Metal halogen lamp of device, the sodium vapor lamp light source.

Fig. 3 is the practical example of general light source, owing to need the illumination of full angle, so, light source installing plate 7 adopts tubular structure, himself internal diameter constitutes vacuum cavity 1, and light source 8 is uniformly distributed in its surface, and places the heat-dissipating cavity 2 that is made of tubular light source face shield 5 and light source installing plate 7 external diameters.Drive air port 10 and specially designed air outlet 15 on light source base 3 into, this specially designed meaning is, can place universal standard lamp holder 14 at the light source base center, like this, just can directly use on any light fixture.

At Fig. 2, in the practical example of Fig. 3, after the light fixture energising, light source 8 is luminous, and negative pressure fan 9 work simultaneously form negative pressure in vacuum cavity 1.Because vacuum cavity 1 communicates by tailstock 6 with heat-dissipating cavity 2, so outer gas stream flows to vacuum cavity 1 by the air inlet 10 that places heat-dissipating cavity 2 ends, and discharging outside the lamp bodies (light source that uses at street lamp shown in the figure two owing to can directly directly discharge air-flows by negative pressure fan 9, so do not establish the air port that this goes out particular design) by air outlet 15 under the effect of negative pressure fan 9.In addition, because heat-dissipating cavity 2 volumes are less than vacuum cavity 1, so the air-flow by heat-dissipating cavity 2 is under the effect of ambient pressure, high velocity stream is crossed heat-dissipating cavity 2, takes away the heat that light source 8 produces simultaneously fast.Thereby reached the purpose of small size high efficiency and heat radiation.

In addition, in actual applications, no matter vacuum cavity or heat-dissipating cavity can be decomposed into several passages and make up in order to carry out the design and use of special light fixture as required.

Claims

1. negative pressure backflow surface radiating formula LED lamp light source, by the light source body, the light source face shield, light source base, light source tailstock and light source installing plate, appliance controling plate, fan and led light source are formed, it is characterized in that: light source body and light source face shield are formed cylindrical shape, light source tailstock and light source base place the cylinder two ends, light source, and light source installing plate and electric control panel place in the cylinder, fan places light source base, forms an independently lighting source.

2. LED lamp light source according to claim 1, it is characterized in that: be the cavity that two classes differ in size with the light-source structure internal insulation, utilization is different at two volumes but in the runner that communicates, air-flow velocity is different principle also, to take out the mode of negative pressure, make air-flow at a high speed by the LED light-emitting area, the heat that produces when taking away its work, total is independently finished in the lamp body at one, make it to become one and be suitable for working independently of various installation environments, and do not need lamp light source additional and that the change any structure carries out back work.

3. LED lamp light source according to claim 1, it is characterized in that: the cavity that two classes of utilizing this body structure to go out in the light source internal insulation differ in size and are interconnected, wherein a class cavity is used for producing negative pressure, an other class cavity is used for dispelling the heat, two cavitys have one to connect with upper channel, the cavity that is used for heat radiation has air inlet, has air outlet for generation of the cavity of negative pressure, and the fan that produces negative pressure is housed at the air outlet position.

4. LED lamp light source according to claim 1 is characterized in that: be used for producing the volume of cavity of negative pressure greater than the volume of the cavity that is used for dispelling the heat.

5. LED lamp light source according to claim 1, it is characterized in that: be used for producing the cavity of negative pressure and the cavity that is used for dispelling the heat all can be single cavity body structure, also can be the multi-cavity body structure, namely the cavity of a purposes can adopt as required and be decomposed into more than one cavity and carry out function combination.

6. LED lamp light source according to claim 1 is characterized in that: the cavity of which kind of purposes no matter, can adopt arbitrary shape.

7. LED lamp light source according to claim 1 is characterized in that: the light-emitting area of led light source is placed in the cavity for heat radiation.