CN204005873U

CN204005873U - LED radiator

Info

Publication number: CN204005873U
Application number: CN201420496717.5U
Authority: CN
Inventors: 韩栋梁
Original assignee: Hangzhou Sang Di Lighting Electric Appliance Co Ltd
Current assignee: Hangzhou Sang Di Lighting Electric Appliance Co Ltd
Priority date: 2014-08-30
Filing date: 2014-08-30
Publication date: 2014-12-10
Anticipated expiration: 2024-08-30

Abstract

The utility model discloses a kind of LED radiator, comprise radiator body, radiator body is column, radiator body comprises the accommodation tube that substrate is fixedly connected with substrate with one side, substrate and accommodation tube form container cavity, on substrate, offer penetrating container cavity and extraneous through hole, on the lateral surface of accommodation tube, be provided with some fins of arranging successively, the arragement direction of each fin is all identical with the axis direction of radiator body, on the side of accommodation tube, offer some steam vents, accommodation tube counterpart substrate position is provided with some air admission holes, the utility model not only can be accelerated the radiating rate of LED lamp fin, and make circuit board amount of heat of living in leave fast simultaneously, greatly guaranteed the radiating effect at each position of LED lamp, extend the service life of LED lamp.

Description

LED radiator

Technical field

The utility model relates to radiator field, relates in particular a kind of LED radiator.

Background technology

Existing LED light fixture generally comprises the wire of cylindrical aluminum substrate radiator, luminous semiconductor chip, the circuit board that is arranged on aluminium base radiator inside, connection chip and circuit board, and covers on the lampshade on chip.

In general, whether the work of LED lamp is stable, quality quality, and most important with lamp body heat radiation itself, the heat radiation of the high-brightness LED lamp on market, usually adopts natural heat dissipation, and effect is unsatisfactory.

LED radiator is generally cylindric, on radiator side, be provided with some fins, radiator is provided with container cavity along axis direction, the corresponding container cavity another side of radiator is substrate, the chip of LED light fixture is fixed on substrate, circuit board is positioned at container cavity inside, on substrate, also offer the through hole of penetrating container cavity and radiator outside, wire connects chip and circuit board through through hole, the openend of container cavity connects pedestal, during work, chip produces a large amount of heat, substrate by radiator is delivered to heat on fin, finally by fin, be delivered in air, to reach the object of LED light source being carried out to radiating and cooling.

When mounted LED lamp tool, the substrate of radiator is conventionally fitted with fin, the heat dissipation channel below forming between some fins is closed, in heat dissipation channel, do not form upper and lower air communication channel, when heat is passed in radiator, the rear density of air heat absorption in heat dissipation channel reduces and raises leaves heat dissipation channel, but below heat dissipation channel, the lower air of temperature cannot enter in heat dissipation channel, makes the heat of radiator be difficult to dissipate, radiating effect is very poor, reduces the service life of LED light source.

Application number is that 201320585911.6 Chinese patent discloses a kind of LED radiator, comprise heat radiation rack and groups of fins, groups of fins is comprised of a plurality of fin, a plurality of fin are disposed at least one side of heat radiation rack, between every adjacent two fin, form heat dissipation channel, the arragement direction of fin is vertical with the short transverse of heat radiation rack, the bottom of fin exceeds bottom one segment distance of heat radiation rack, when heat transfers in heat dissipation channel, the rear density of air heat absorption in heat dissipation channel reduces and raises leaves heat dissipation channel, the lower air of temperature of heat dissipation channel below enters in heat dissipation channel, go round and begin again, although the heat dissipation channel of this radiator up/down perforation makes near circulation of air fin, but the heat that chip produces is not only delivered in air by fin, heat radiation rack inside is owing to being closed up and down, the heat bulk deposition that it is inner, cause the inner circuit board of placing in hot environment.The overheated components and parts hydraulic performance decline causing on circuit board of circuit board, causes the work of whole LED lamp unreliable, reduces its service life.

Utility model content

For the deficiencies in the prior art, the utility model provides a kind of radiating rate that not only can accelerate LED lamp fin, and make circuit board amount of heat of living in leave fast simultaneously, greatly guaranteed the radiating effect at each position of LED lamp, the LED radiator that extends the service life of LED lamp.

For achieving the above object, the utility model provides following technical scheme: comprise radiator body, radiator body is column, radiator body comprises the accommodation tube that substrate is fixedly connected with substrate with one side, substrate and accommodation tube form container cavity, on substrate, offer penetrating container cavity and extraneous through hole, on the lateral surface of accommodation tube, be provided with some fins of arranging successively, the arragement direction of each fin is all identical with the axis direction of radiator body, on the side of accommodation tube, offer some steam vents, accommodation tube counterpart substrate position is provided with some air admission holes.

By adopting technique scheme, when LED lamp is installed, luminous semiconductor chip is fixed on substrate, circuit board is positioned in the container cavity of accommodation tube and substrate formation, then pedestal is fixed on to the openend of container cavity, wire is connected conducting by chip with circuit board through through hole, during the work of this LED lamp, chip produces a large amount of heat, by substrate, be passed on accommodation tube, by accommodation tube, be delivered on some fins, the rear density of air heat absorption between some fins reduces and raises leaves fin position, the lower air of temperature of counterpart substrate position, fin below enters the space between some fins, it is without hindrance or hinder little when between some fins, the passage of up/down perforation makes fin enter from below, circulation of air speed is faster, go round and begin again, improve the radiating efficiency of fin, the heat that chip is passed on substrate simultaneously can be passed in the air in container cavity, make the air heat in container cavity, hot-air in container cavity directly distributes by steam vent, by supplements cold in the close air admission hole phase container cavity of substrate position, hot-air in whole container cavity is constantly discharged, can not accumulate in damage circuit board in container cavity.

The utility model is further set to: the other end of container cavity counterpart substrate stretches out some fins, and some fins are all rectangular, and some fin arranged outside have ventilated walls, between adjacent two fins, accommodation tube and ventilated walls, forms heat dissipation channel.

By adopting technique scheme, fin is the heat away from substrate place near the unnecessary fin of heat generation at substrate place, some fins outside is during without ventilated walls, the simultaneously outside distribute heat of fin, do not form the passage of standard, cause some fins to interact, at some fin arranged outside ventilated walls, adjacent two fins, between accommodation tube and ventilated walls, form heat dissipation channel, this heat dissipation channel up/down perforation, form stack effect, the heat that some fins give out moves up by heat dissipation channel, form bottom-up air draught, accelerate the speed air flow in heat dissipation channel, accelerate fin distributing near the heat at substrate place, simultaneously because air velocity is accelerated, the pressure at the corresponding heat dissipation channel of steam vent place is diminished, the hot-air accelerating in container cavity is discharged from steam vent, whole device radiation effect is strengthened.

The utility model is further set to: steam vent in accommodation tube to accommodation tube towards tilting, air admission hole in accommodation tube to accommodation tube towards having a down dip.

By adopting technique scheme, according to hot-air density compared with little and automatic-ascending principle, steam vent in accommodation tube to accommodation tube towards tilting, more being conducive to hot-air discharges from steam vent, air admission hole in accommodation tube to accommodation tube towards having a down dip, be conducive to cold air and enter container cavity from air admission hole.

Compared with prior art, the utility model LED radiator not only can be accelerated the radiating rate of LED lamp fin, and makes circuit board amount of heat of living in leave fast simultaneously, has greatly guaranteed the radiating effect at each position of LED lamp, extends the service life of LED lamp.

Accompanying drawing explanation

Fig. 1 is the three-dimensional structure diagram of the utility model LED radiator;

Fig. 2 is another angle three-dimensional structure diagram of the utility model LED radiator;

Fig. 3 is the upward view of the utility model LED radiator;

Fig. 4 is the profile at A-A place in Fig. 3.

Reference numeral: 1, substrate; 12, through hole; 2, accommodation tube; 21, container cavity; 22, steam vent; 23, air admission hole; 3, fin; 4, heat dissipation channel; 5, ventilated walls; 6, chip.

The specific embodiment

Referring to figs. 1 through Fig. 4, the embodiment of the utility model LED radiator is described further.

A kind of LED radiator, comprise radiator body, radiator body is column, radiator body comprises the accommodation tube 2 that substrate 1 is fixedly connected with substrate 1 with one side, substrate 1 forms container cavity 21 with accommodation tube 2, on substrate 1, offer penetrating container cavity 21 and extraneous through hole 12, on the lateral surface of accommodation tube 2, be provided with some fins of arranging successively 3, the arragement direction of each fin 3 is all identical with the axis direction of radiator body, on the side of accommodation tube 2, offer some steam vents 22, accommodation tube 2 counterpart substrate 1 positions are provided with some air admission holes 23

When LED lamp is installed, luminous semiconductor chip 6 is fixed on substrate 1, circuit board is positioned in the container cavity 21 of accommodation tube 2 and substrate 1 formation, then pedestal is fixed on to the openend of container cavity 21, wire is connected conducting by chip 6 with circuit board through through hole 12, during the work of this LED lamp, chip 6 produces a large amount of heat, by substrate 1, be passed on accommodation tube 2, by accommodation tube 2, be delivered on some fins 3, the rear density of air heat absorption between some fins 3 reduces and raises leaves fin 3 positions, the lower air of temperature of fin 3 below counterpart substrate 1 positions enters the space between some fins 3, it is without hindrance or hinder little when between some fins 3, the passage of up/down perforation makes fin 3 enter from below, circulation of air speed is faster, go round and begin again, improve the radiating efficiency of fin 3,

The heat that chip 6 is passed on substrate 1 simultaneously can be passed in the air in container cavity 21, make the air heat in container cavity 21, hot-air in container cavity 21 directly distributes by steam vent 22, by the interior supplements cold of air admission hole 23 phase container cavity 21 near substrate 1 position, hot-air in whole container cavity 21 is constantly discharged, can not accumulate in the interior damage circuit board of container cavity 21.

Further the other end of container cavity 21 counterpart substrates 1 stretches out some fins 3, some fins 3 are all rectangular, some fin 3 arranged outside have ventilated walls 5, adjacent two fins 3, between accommodation tube 2 and ventilated walls 5, form heat dissipation channel 4, fin 3 is the heat away from substrate 1 place near the unnecessary fin 3 of heat generation at substrate 1 place, some fins 3 outsides are during without ventilated walls 5, the simultaneously outside distribute heat of fin 3, do not form the passage of standard, cause some fins 3 to interact, at some fin 3 arranged outside ventilated walls 5, adjacent two fins 3, between accommodation tube 2 and ventilated walls 5, form heat dissipation channel 4, these heat dissipation channel 4 up/down perforations, form stack effect, the heat that some fins 3 give out moves up by heat dissipation channel 4, form bottom-up air draught, accelerate the speed air flow in heat dissipation channel 4, accelerate fin 3 distributing near the heat at substrate 1 place, simultaneously because air velocity is accelerated, the pressure at the corresponding heat dissipation channel of steam vent 22 4 places is diminished, the hot-air accelerating in container cavity 21 is discharged from steam vent 22, whole device radiation effect is strengthened.

Further steam vent 22 in accommodation tube 2 to accommodation tube 2 towards tilting, air admission hole 23 in accommodation tube 2 to accommodation tube 2 towards having a down dip, according to hot-air density compared with little and automatic-ascending principle, steam vent 22 in accommodation tube 2 to accommodation tube 2 towards tilting, more being conducive to hot-air discharges from steam vent 22, air admission hole 23 in accommodation tube 2 to accommodation tube 2 towards having a down dip, be conducive to cold air and enter container cavity 21 from air admission hole 23.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a LED radiator, comprise radiator body, radiator body is column, radiator body comprises the accommodation tube that substrate is fixedly connected with substrate with one side, substrate and accommodation tube form container cavity, on substrate, offer penetrating container cavity and extraneous through hole, on the lateral surface of accommodation tube, be provided with some fins of arranging successively, the arragement direction of each fin is all identical with the axis direction of radiator body, it is characterized in that: on the side of described accommodation tube, offer some steam vents, accommodation tube counterpart substrate position is provided with some air admission holes.

2. LED radiator according to claim 1, it is characterized in that: the other end of described container cavity counterpart substrate stretches out some fins, described some fins are all rectangular, and described some fin arranged outside have ventilated walls, between adjacent two fins, accommodation tube and ventilated walls, form heat dissipation channel.

3. LED radiator according to claim 2, is characterized in that: described steam vent in accommodation tube to accommodation tube towards tilting, described air admission hole in accommodation tube to accommodation tube towards having a down dip.