CN207814974U - A kind of high-efficiency heat radiating LED bulb lamp - Google Patents

Abstract

The utility model discloses a kind of high-efficiency heat radiating LED bulb lamps, including lamp cap, plastic shell and lampshade, the lamp cap is fixedly connected with plastic shell upper end, the lampshade is connect with plastic shell lower thread, the plastic shell is in hollow structure, driver is disposed with inside it from top to bottom, radiator and light source board, the radiator is in the form of annular discs, its end face contacted with light source board is horizontal smooth flat, it is equipped with several the first cooling fins around the setting of radiator circumference outer and the second cooling fin around edge in radiator circumference close to the end face of driver；The radiator circle centre position is additionally provided with a radiator fan.The utility model has the advantages that：（1）Heat dissipation effect is excellent；（2）LED light service life is long.

Description

A kind of high-efficiency heat radiating LED bulb lamp

Technical field

The utility model is related to a kind of lamps and lanterns, more particularly, to a kind of high-efficiency heat radiating LED bulb lamp.

Background technology

LED was also known as light emitting diode (Light Emitting Diode), belongs to semiconductor subassembly, from Americanologist in 1962 With electric corporation develop the whole world the first can the red-light LED of practical application start, LED has marched toward the full-color epoch so far.LED's Principle of luminosity is the P-N diode being combined into the N-type semiconductor containing electronics by containing the P-type semiconductor of electric hole in simple terms, P-N diode both ends add forward bias voltage drop, when an electric current passes through it, electrons and holes can release energy when flowing to joint surface engagement and It shines.

LED can generate thermal energy during use or running and temperature rises phenomenon, such as all electronic components Fruit ignores heat dissipation problem, the result that LED will be caused to do sth. in advance because of high temperature to burn.The design of LED lamp is compared with conventional lamp complexity, packet Containing optics, mechanism, electronics and heat dissipation, wherein " heat dissipation " is even more important, because the conversion ratio of high power LED lamp only has at present 20% can be converted into light, remaining 80% can be converted to heat, if cannot will be unable to reach LED light source by except heat derives lamps and lanterns The 50000 hour service life declared, while heat can influence the luminous efficiency of LED, the tragic situation for causing serious light decay and lamps and lanterns to be damaged.

The luminous efficiency of LED and service life and operating temperature are closely bound up, inverse relation are presented, figure below is U.S. CREE institutes The LED life of publication reports that temperature often declines 10 DEG C of service life will 2 times of extension and luminous flux promotion 3% ~ 8%.Due to high-capacity LED The development of technology so that LED lamp faces the harsh challenge of heat management and heat dissipation design, because temperature raising can not only cause Brightness declines, and but will accelerate the deterioration of light fitting body and encapsulating material when temperature is more than 100° centigrade.Therefore, in addition to LED is sealed Outside the heat dissipation technology of arrangement itself, the heat dissipation of LED lamp and heat conductive design are even more to maintain the maximum of lamp life crucial.

Such as a kind of a kind of LED radiator disclosed in Chinese patent literature, Authorization Notice No. CN 204084277 U, the utility model disclose a kind of LED radiator, including shape is in the radiator body of hollow cylindrical, is dissipated Several radiating fins are evenly arranged on hot device body outer surface, radiating fin is arc-shaped on cross section, radiating fin pair It answers the other side of radiator body to be provided with the reinforcement structure for concatenating several radiating fins, is formed between every adjacent two radiating fin Spiral duct is provided through the air holes of spiral duct in reinforcement structure.A kind of LED of being designed to provide of the utility model dissipates Hot device, the LED radiator structural strength is high, is axially formed spiral wind in radiator, air flowing, perfect heat-dissipating is accelerated to dissipate Good in thermal property, rate of heat dispation are fast.But there is also its shortcomings for the utility model, such as its radiator and the hair in LED light Thermal element is not connected directly, and heat dissipation is generates the flowing of air by the convection current of heat, without actively generating cross-ventilation Device, therefore its radiating efficiency is relatively low.

Utility model content

The utility model be in order to overcome in the prior art LED light radiating efficiency it is low, LED light service life is low to ask Topic provides a kind of reinforcement LED light heat dissipation effect, increases a kind of high-efficiency heat radiating LED bulb lamp of LED light service life.

To achieve the goals above, the utility model uses following technical scheme：

On a kind of high-efficiency heat radiating LED bulb lamp, including lamp cap, plastic shell and lampshade, the lamp cap and plastic shell End is fixedly connected, and the lampshade is connect with plastic shell lower thread, the plastic shell be in hollow structure, inside from Driver, radiator and light source board are disposed under, the radiator is in the form of annular discs, is contacted with light source board End face is horizontal smooth flat, and several the first heat dissipations around the setting of radiator circumference outer are equipped with close to the end face of driver Piece and the second cooling fin around edge in radiator circumference；The radiator circle centre position is additionally provided with a radiator fan.

Radiator is directly fitted with light source board and is connect by the utility model so that the heat generated on light source board can be timely It being distributed by radiator, radiator is equipped with the first cooling fin and the second cooling fin, effectively enhances its heat dissipation area, To effectively enhance its heat dissipation effect.In addition radiator circle centre position is additionally provided with a radiator fan, and the generation for capableing of active is empty Gas convection current, so as to quickly take the heat on the first cooling fin and the second cooling fin to lamp by way of air flowing In vitro, to ensure that the temperature of lamp body will not be too high, its usage time is extended.

Preferably, first cooling fin and the second cooling fin is all arc-shaped, it is arranged alternately respectively, first dissipates Heat dissipation wind channel is formed between backing and the second cooling fin.First cooling fin and the setting of the second cooling fin is in the arc-shaped, it can make The length of the first cooling fin and the second cooling fin is obtained, so that heat dissipation area increases, effectively enhances its heat dissipation effect.The One cooling fin and the second cooling fin are arranged alternately so that form heat dissipation wind channel between it, can ensure the circulation of air, from And it ensure that its heat dissipation effect.

Preferably, being additionally provided with thermal baffle between the radiator and driver.Setting thermal baffle enables to The hot wind formed in radiator will not make the temperature rise of driver, to ensure that the normal work of driver.

Preferably, the thermal baffle is in the form of annular discs, also to having around circle on the end face of radiator The draught deflector in week forms ventilation opening between the adjacent draught deflector.The wind energy that draught deflector enables to fan upward is set It is hard to bear to arrive blocking, and change direction to be flow in the heat dissipation wind channel of radiator along ventilation opening, strengthen convection current and heat dissipation Effect.

Preferably, the size of circumference and the size of radiator fan formed by the draught deflector match.

Preferably, the plastic shell is equipped with the thermal vias of the strip of several circular plastic shells.If Setting thermal vias contributes to the air circulation of plastic enclosure, so as to effectively enhance heat dissipation effect.

Therefore, the utility model has the advantages that：（1）Heat dissipation effect is excellent；（2）LED light service life is long.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of the utility model.

Fig. 2 is the vertical view of the radiator of the utility model.

Fig. 3 is the structural schematic diagram of the utility model plastic shell.

Fig. 4 is the upward view of the utility model thermal baffle.

Wherein：6 lampshade of lamp cap 1 plastic shell, 2 driver, 3 thermal baffle, 4 radiator, 5 light source board, 7 thermal vias 21 draught deflector, 41 ventilation opening, 42 first 51 second cooling fin of cooling fin, 52 radiator fan, 53 heat dissipation wind channel 54.

Specific implementation mode

The utility model is further described with specific implementation mode below in conjunction with the accompanying drawings.

In embodiment as shown in Figs 1-4, a kind of high-efficiency heat radiating LED bulb lamp, including lamp cap 1, plastic shell 2 and lampshade 7, the lamp cap 1 is fixedly connected with 2 upper end of plastic shell, and the lampshade 7 is connect with 2 lower thread of plastic shell, described Plastic shell）In hollow structure, inside be disposed with driver 3, radiator 5 and light source board 6, plastic from top to bottom The thermal vias 21 of the strip of several circular plastic shells 2 is additionally provided on shell 2, the radiator 5 is in the form of annular discs, The end face contacted with light source board 6 is horizontal smooth flat, is equipped with close to the end face of driver 3 several around 5 circumference of radiator The first cooling fin 51 and the second cooling fin 52 around edge in 5 circumference of radiator, first cooling fin 51 of outer setting It is all arc-shaped with the second cooling fin 52, is arranged alternately respectively, formed and dissipated between the first cooling fin 51 and the second cooling fin 52 Hot-flow flue 54；Thermal baffle 4 is additionally provided between the radiator 5 and driver 3, the thermal baffle 4 is in the form of annular discs, Also to the draught deflector 41 having around circumference on the end face of radiator 5, circumference is big formed by the draught deflector 41 The small size with radiator fan 53 matches, and ventilation opening 42 is formed between the adjacent draught deflector 41；The radiator 5 Circle centre position is additionally provided with a radiator fan 53.

Claims (6)

1. a kind of high-efficiency heat radiating LED bulb lamp, including lamp cap（1）, plastic shell（2）And lampshade（7）, characterized in that it is described Lamp cap（1）With plastic shell（2）Upper end is fixedly connected, the lampshade（7）With plastic shell（2）Lower thread connects, described Plastic shell（2）In hollow structure, inside be disposed with driver from top to bottom（3）, radiator（5）And light source board （6）, the radiator（5）It is in the form of annular discs, with light source board（6）The end face of contact is horizontal smooth flat, close to driver （3）End face be equipped with it is several surround radiator（5）First cooling fin of circumference outer setting（51）With around radiator（5）Circle Second cooling fin on edge in week（52）；The radiator（5）Circle centre position is additionally provided with a radiator fan（53）.

2. a kind of high-efficiency heat radiating LED bulb lamp according to claim 1, characterized in that first cooling fin（51） With the second cooling fin（52）It is all arc-shaped, is arranged alternately respectively, the first cooling fin（51）With the second cooling fin（52）Between Form heat dissipation wind channel（54）.

3. a kind of high-efficiency heat radiating LED bulb lamp according to claim 1, characterized in that the radiator（5）With driving Device（3）Between be additionally provided with thermal baffle（4）.

4. a kind of high-efficiency heat radiating LED bulb lamp according to claim 3, characterized in that the thermal baffle（4）In circle Plate-like, close to radiator（5）End face on also to the draught deflector having around circumference（41）, the adjacent draught deflector （41）Between form ventilation opening（42）.

5. a kind of high-efficiency heat radiating LED bulb lamp according to claim 4, characterized in that the draught deflector（41）Institute at Circumference size and radiator fan（53）Size match.

6. a kind of high-efficiency heat radiating LED bulb lamp according to claim 1, characterized in that the plastic shell（2）On set There are several circular plastic shells（2）Strip thermal vias（21）.