CN201885065U

CN201885065U - High-power light-emitting diode (LED) projection lamp

Info

Publication number: CN201885065U
Application number: CN2010205639841U
Authority: CN
Inventors: 赵鲁予; 赵家启
Original assignee: QINGDAO INFORMATION AND CONTROL ELECTRONIC TECHNOLOGY CO LTD
Current assignee: QINGDAO INFORMATION AND CONTROL ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2010-10-18
Filing date: 2010-10-18
Publication date: 2011-06-29
Anticipated expiration: 2020-10-18

Abstract

The utility model discloses a high-power light-emitting diode (LED) projection lamp, comprising a shell, a plurality of LED chips distributed inside the shell, a plurality of cooling fins uniformly inserted on the shell behind the LED chips, two axial-flow waterproof fans and a power supply fixed at the bottom of the shell, wherein the two axial-flow waterproof fans are arranged on the shell below the LED chips, the power supply is connected with a power line, and the shell in front of the LED chips are fixedly provided with a transparent panel. The high-power LED projection lamp provided by the utility model has the effects that: (1) the length, the width and the height of the shell are respectively 370mm, 260mm and 80mm so that the projection lamp has a small size and light weight; and (2) a plurality of cooling fins are arranged behind the LED chips so that the heat-dissipating property is good and the LED chips can be ensured to work in an environment at lower temperature, and thus, the light attenuation is low and the service life is long.

Description

A kind of high power LED projector

Technical field

The utility model relates to a kind of light fixture, particularly a kind of high power LED projector.

Background technology

Semiconductor light-emitting-diode (LED) is a kind of novel fixedly luminescent device.It has that volume is little, luminous efficiency is high, energy-saving and emission-reduction, the life-span is long, reliability is high, photochromic characteristics such as good, pollution-free, is green cleaning light source.U.S., Europe, the research and development application energetically of Japan and Korea S. many advanced technology country, China also attaches great importance to the research and development application of LED, is expected to obtain large-area applying in several years.

LED is luminous to be to produce the electrical-optical conversion when given electric current and voltage, and its conversion efficiency is about 20%, and promptly 20% electric energy converts luminous energy to, and 80% electric energy converts heat energy to.The area of high-power LED chip is all very little, the heat that produces all concentrates on the chip, will very fast chip be burnt out as not conducting rapidly, therefore, must dispose radiator to it, heat is derived rapidly, and spread out, so be heat dissipation technology the research key issue in application problem of LED light fixture.

Conduction has comprehensively been used in the heat radiation of LED, these three kinds of modes of convection current and radiation.

At present domestic all is to dispel the heat with natural air cooled mode, this passive radiating mode weak point is wind good heat dissipation when big, wind hour weak heat-dissipating, the poorest when calm, on the other hand, the natural air cooled fin that requires launches as far as possible, forms air channel smoothly, and be exposed in the air, at this moment natural air cooledly just easily heat distributed.

The heat radiation of LED requires radiator that very big area/power ratio is provided, and better radiating effect is just arranged, and natural air cooled speed is slow, instability, and this just makes the heat spreader structures complexity, and volume is big, and quality is heavy.

If will dwindle distance between commutator segments, make the area of fin big and thin again, but be subjected to the restriction of the technology of conventional casting technique or extrusion modling, implement very difficult.

On the other hand, the variation of environment temperature has tangible influence to the luminous efficiency of LED, and temperature high-luminous-efficiency more is just low more, otherwise temperature is low more, and efficient is just high more.

Interrelated data shows: the maximum junction temperature T of LED _JmaxAt 120 ℃～150 ℃, its optimum working temperature should be in T _JmaxHalf about, promptly 60 ℃～75 ℃, the thermal resistance R of LED _J-CUsually at 1～6 ℃/W, its value is more little, and performance is good more, is the temperature T C that example is calculated radiator with a kind of following parameters of led chip:

Maximum junction temperature T _Jmax=120 ℃, thermal resistance R _J-C=2.4 ℃/W, power P _D=13.3W requires its working junction temperature T _jThe value of mediating T _j=67 ℃, this moment radiator temperature T _CShould be:

T _C＝T _j-R _J-C×P _D≈35℃

Heat on the radiator mainly results from LED, also relevant with the environment temperature of work, a temperature difference is always arranged between the two, the temperature that is radiator is higher than environment temperature, being 25 ℃ with environment temperature is example, the temperature of radiator is 35 ℃, and this smaller temperature value just requires radiator that enough big area of dissipation is arranged, and heat can be dissipated rapidly, could realize, current production all is that employing is natural air cooled, and radiating rate is slow, and area of dissipation is big inadequately, cause radiator temperature apparently higher than 35 ℃, cause luminous efficiency low, light decay is big, and the life-span is short.

Current in the Projecting Lamp field, the lamp housing of mid power all about 370 * 260 * 80, can be installed 50w, 100w, 150w high-pressure mercury lamp, Halogen lamp LED etc.

In such volume, as if the LED lamp that will install about 100w, processing technology routinely is difficult to realize.Very big area/power ratio can't realize natural air cooled again, so current just do not have high power LED projector in the Projecting Lamp field, have only the small-power Projecting Lamp below tens watts, can not satisfy the demand of market, can't be implemented in the energy-saving and emission-reduction in Projecting Lamp field high power LED projector.

Summary of the invention

Problem to be solved in the utility model is: provide a kind of perfect heat-dissipating, light weight, volume is little, light decay is little and the high power LED projector of long service life.

In order to solve the problems of the technologies described above, high power LED projector of the present utility model, also comprise housing, comprise several led chips of being distributed in the housing, evenly be plugged on some fin on the radiating bottom plate at led chip rear, be arranged on the anti-Water fan of two axial flows on the housing of led chip below and be fixed on the power supply of housing bottom, be connected with power line on the described power supply, be fixed with light penetrating panel on the housing in the place ahead of described led chip.

For fin is fixed on the housing, high power LED projector of the present utility model, the top of described fin is provided with a connecting plate.

In order to strengthen the sealing of Projecting Lamp, high power LED projector of the present utility model is provided with O-ring seal between described light penetrating panel and the housing.

High power LED projector of the present utility model is provided with sealing strip between the anti-Water fan of described led chip and axial flow.

For the heat that will produce in the course of work distributes, high power LED projector of the present utility model, the rear portion of described housing is provided with several louvres.

High power LED projector of the present utility model, the length of described housing are 370mm, and width is 260mm, highly are 80mm; Described led chip is 8; The length of described fin is 240mm, highly is 52mm, and thickness is 1mm, is spaced apart 3mm between described per two fin, and the sheet number of described fin is 53.

The effect that the utility model is obtained is: length, width and the thickness of (1) housing are respectively 370mm, 260mm and 80mm, thereby volume is little, light weight; (2) rear of led chip is provided with the multi-disc fin, thereby perfect heat-dissipating, and the assurance led chip is worked under lower temperature environment, thereby light decay is little, long service life.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a right view of the present utility model.

Among the figure: 1, housing, 2, connecting plate, 3, led chip, 4, sealing strip, 5, power line, 6, O-ring seal, 7, the anti-Water fan of axial flow, 8, power supply, 9, fin, 10, light penetrating panel, 11, louvre.

The specific embodiment

As depicted in figs. 1 and 2, high power LED projector of the present utility model, comprise housing 1, also comprise 8 led chips 3 being distributed in the housing 1, evenly be plugged on 53 fin 9 on the housing 1 at led chip 3 rears, be arranged on the anti-Water fan 7 of two axial flows on the housing 1 of led chip 3 belows and be fixed on the power supply 8 of housing 1 bottom, be connected with power line 5 on the described power supply 8, be fixed with light penetrating panel 10 on the housing 1 in the place ahead of described led chip 3; The top of described housing 1 is provided with a connecting plate 2; Be provided with O-ring seal 6 between described light penetrating panel 10 and the housing 1; Be provided with sealing strip 4 between the anti-Water fan 7 of described led chip 3 and axial flow; The rear portion of described housing 1 is provided with several louvres 11; The length of described housing 1 is 370mm, and width is 260mm, is 240mm for the length of the described fin 9 of 80mm highly, highly is 52mm, and thickness is 1mm, is spaced apart 3mm between described per two fin 9.

High power LED projector of the present utility model, the length of housing, width and thickness are respectively 370mm, 260mm and 80mm, thereby volume is little, light weight.

High power LED projector of the present utility model, the power of 8 led chips 3 can reach 100W, and 53 fin 9 form area of dissipation 12900cm ², make led chip 3 have 129cm ²Area/power ratio of/w, through actual measurement, when environment temperature was 25 ℃～35 ℃, the temperature of fin 9 was 37 ℃～45 ℃, can guarantee that led chip 3 is in the lower operating temperature, thereby light decay was little, long service life.

High power LED projector of the present utility model, the below of led chip 3 are provided with the anti-Water fan 7 of axial flow, and the rear of housing 1 is provided with a plurality of louvres 11, can further improve heat-sinking capability.

High power LED projector of the present utility model is provided with O-ring seal 6 between described light penetrating panel 10 and the housing 1.Thereby have good sealing function, a water proof and dust proof.

Claims

1. high power LED projector, comprise housing (1), it is characterized in that: also comprise several led chips (3) of being distributed in the housing (1), evenly be plugged on some fin (9) on the radiating bottom plate at led chip (3) rear, be arranged on the anti-Water fan (7) of two axial flows on the housing (1) of led chip (3) below and be fixed on power supply (8) bottom the housing (1), be connected with power line (5) on the described power supply (8), be fixed with light penetrating panel (10) on the housing (1) in the place ahead of described led chip (3).

2. high power LED projector according to claim 1 is characterized in that: the top of described housing (1) is provided with a connecting plate (2).

3. high power LED projector according to claim 1 is characterized in that: be provided with O-ring seal (6) between described light penetrating panel (10) and the housing (1).

4. high power LED projector according to claim 1 is characterized in that: be provided with sealing strip (4) between the anti-Water fan (7) of described led chip (3) and axial flow.

5. high power LED projector according to claim 1 is characterized in that: the rear portion of described housing (1) is provided with several louvres (11).

6. according to claim 1 or 2 or 3 or 4 or 5 described high power LED projectors, it is characterized in that: the length of described housing (1) is 370mm, and width is 260mm, highly is 80mm; Described led chip (3) is 8; The length of described fin (9) is 240mm, highly is 52mm, and thickness is 1mm, is spaced apart 3mm between described per two fin (9), and the sheet number of described fin is 53.