CN201688370U

CN201688370U - Heat abstractor and LED lamp utilizing same

Info

Publication number: CN201688370U
Application number: CN2010201963333U
Authority: CN
Inventors: 乔乾; 成长青; 亢锐英; 许敏
Original assignee: Shanxi Guangyu LED Lighting Co Ltd
Current assignee: Shanxi Guangyu Semiconductor Lighting Co., Ltd.
Priority date: 2010-05-16
Filing date: 2010-05-16
Publication date: 2010-12-29
Anticipated expiration: 2020-05-16

Abstract

A heat abstractor comprises a cylindrical heat abstracting base body, a heat abstracting body and an air path with a central through hole, wherein the heat abstracting body is formed by heat abstracting fins arranged at the periphery of the heat abstracting base body, the air path is fixedly connected on the end surface at one side of the heat abstracting body, and the through hole is vertical to the end surface of the heat abstracting body. For an LED lamp utilizing the heat abstractor, a light source part and a power supply part are respectively installed on the end surfaces at two sides of the heat abstractor. The heat abstractor adopts an air path structure used for air convection for radiation, and obviously improves the heat abstracting efficiency of the heat abstracting body. The heat abstractor is applied on the LED lamp, can well improve the heat abstracting problem of the LED lamp, and improves the practicality of the LED lamp.

Description

A kind of heat abstractor and the LED light fixture that utilizes this heat abstractor

Technical field

The utility model relates to a kind of heat abstractor, particularly relates to a kind of heat abstractor that utilizes cross-ventilation to improve heat-diffusing efficiency of heat abstractor.The utility model also relates to a kind of LED light fixture that utilizes this heat abstractor.

Background technology

Along with the enhancing of people's energy-saving and environmental protection consciousness, each state is all developing such as reproducible clean energy resourcies such as solar energy, wind energies energetically.At lighting field, various new light sources are also constantly weeded out the old and bring forth the new, and are widely used.Wherein, LED (light emitting diode) is with advantages such as its low energy consumption, high light efficiency, life-span length and colour rendering are good, by the lighting field that is applied in more and more widely.

Using great power LED is a kind of desirable selection as illuminating device.For LED, increase input power, the brightness meeting is risen pro rata.The efficient of LED is far from reaching 100%, can produce heat in the course of the work, during large-power light-emitting diodes work, heat concentrates in the small-sized chip, make that the temperature of chip internal is more and more higher, non-uniform Distribution, chip light emitting efficient and the fluorescent material that can cause thermal stress swash problems such as penetrating decrease in efficiency, and when temperature surpassed certain value, the crash rate of device is index law to be increased.Statistics shows, 2 ℃ of the every risings of component temperature, reliability decrease 10%.Therefore, be necessary in order to guarantee the operate as normal of LED, heat abstractor to be set in the LED light fixture.

But the present LED light fixture especially employed heat abstractor of high-power LED lamp can not satisfy the demand that the LED lamp power constantly promotes, and this defective aspect heat radiation has influenced the service life of LED light fixture greatly.Therefore, be badly in need of at present improving aspect the heat abstractor of LED light fixture.

Summary of the invention

The purpose of this utility model provides a kind of new heat abstractor just in order to solve above the deficiencies in the prior art, to improve the radiating efficiency of heat abstractor.

A kind of LED light fixture that utilizes this heat abstractor is provided, and is another goal of the invention of the present utility model.

Heat abstractor of the present utility model comprises a radiator, and described radiator is made up of the heat radiation matrix of a cylindricality and the radiating fin that is arranged on around the described heat radiation matrix.Heat abstractor of the present utility model also includes air flue, and this air flue adopts heat-barrier material to make, and for having the tubular construction of central through hole, described air flue is fixedly connected on the side end face of radiator, and through hole is perpendicular to the radiator end face.

The heat that radiator gives out makes the rising of being heated of radiator ambient air, and hot-air rises along air flue, and the cold air of radiator below enters air flue subsequently and replenishes, thereby forms " stack effect ", reaches the purpose of cross-ventilation quick heat radiating.The purpose that adopts heat-barrier material to make air flue is in order to guarantee the temperature gradient in the air flue, reduces radiating efficiency after avoiding the circulation of hot-air to make air flue reach thermal balance.

Preferably, heat abstractor of the present utility model includes two air flues, and two air flues are symmetrical, and leaves the gap between two air flues, is convenient to install other attachment members.

Further, the utility model also provides a kind of LED light fixture that utilizes above-mentioned heat abstractor, and described LED light fixture also includes the Lights section and power unit except that above-mentioned heat abstractor.

Heat abstractor comprises one by the heat radiation matrix of cylindricality and be arranged on the radiator that the radiating fin around the described heat radiation matrix is formed, and be fixedly connected on two air flues that be mutually symmetrical, that have central through hole on described radiator one side end face, the through hole of described air flue is perpendicular to the radiator end face, and leaves the gap between two air flues;

Power unit is installed on the radiator end face with the air flue homonymy, in the gap between two air flues;

The Lights section comprises a boss, be installed in the reflector on the boss, be inlaid in reflector bottom and be fixed at least one led chip on the boss, and the transmissive mirror that is installed in the reflector front end, described the Lights section is inlaid on the heat radiation matrix by boss, is connected on the radiator end face that is positioned at the air flue opposite side;

Power unit is connected with the led chip circuit, is used for powering to led chip.

Above-mentioned LED light fixture also includes the lampshade of a tubular, and described the Lights section, heat abstractor and power unit are installed in the lampshade, and leaves enough spaces between lampshade and heat abstractor.

The installation of LED light fixture also is provided with a fixed support on the LED light fixture for convenience, and described fixed support is installed on the radiator, and holder part is positioned at the upper end of air flue.

Heat abstractor of the present utility model has significantly increased the radiating efficiency of radiator owing to adopted the air passage structure that is used for the cross-ventilation heat radiation.This heat abstractor is applied on the LED light fixture, can improves the heat dissipation problem of LED light fixture well, improve the practicality of LED light fixture.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1 described heat abstractor;

Fig. 2 is the STRUCTURE DECOMPOSITION figure of the utility model embodiment 1 described heat abstractor;

Fig. 3 is the assembly drawing of the utility model embodiment 2 described LED light fixtures;

Fig. 4 is the structural representation that the utility model embodiment 2 described LED light fixtures are removed lampshade 52;

Fig. 5 is the STRUCTURE DECOMPOSITION figure of the utility model embodiment 2 described LED light fixtures.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Embodiment 1

A kind of heat abstractor, its structure such as Fig. 1 include a radiator 1 and a side that is installed in radiator 1, are used for the air flue 2 of cross-ventilation heat radiation.

Radiator 1 adopts aluminium to make, and its structure is made up of the heat radiation matrix 11 of a cylindricality and the radiating fin 12 that is arranged on around the heat radiation matrix 11 as shown in Figure 2.

Air flue 2 is set to two, adopts heat-barrier material to make, and for having the tubular construction of central through hole, is fixedly connected on symmetrically on the side end face of radiator 1, and leaves the gap between two air flues 2.The through hole of air flue 2 is perpendicular to the end face of radiator 1.

Embodiment 2

A kind of LED light fixture is made up of the Lights section, heat abstractor and power unit three parts, its outward appearance assembly drawing as shown in Figure 3, internal structure such as Fig. 4, Fig. 5.

Heat abstractor adopts embodiment 1 described heat abstractor.

The Lights section such as Fig. 5 are made up of boss 31, led chip 32, reflector 33, silicagel pad 34, transmissive mirror 35 and snap ring 36 in turn.Boss 31 adopts the aluminium identical with radiator 1 to make, and is inlaid on the heat radiation matrix 11 of 1 one end faces of radiator.Reflector 33 is installed on the boss 31, is embedded with a led chip 32 in reflector 33 bottoms.With snap ring 36 transmissive mirror 35 is fixedly mounted on the front end of reflector 33, and between reflector 33 and transmissive mirror 35, adopts silicagel pad 34 to seal.

Power unit 41 is installed on the end face of radiator 1 opposite side, in the gap between two air flues 2.

Power unit 41 is connected with led chip 32 circuit, is used for to led chip 32 power supplies.

Above the Lights section, heat abstractor and power unit are installed in the lampshade 52 of a tubular, and guarantee to leave enough spaces come ventilating air between lampshade 52 and heat abstractor.Engraved structure is adopted in bottom at lampshade 52, further facilitates circulation of air, can reach the purpose of quick heat radiating, and its structure as shown in Figure 3.

As Fig. 4, a fixed support 51 that is used to lift the LED light fixture is installed in radiator 1, and holder part is positioned at the upper end of air flue 2.

Claims

1. heat abstractor, comprise a radiator (1), described radiator (1) is by the heat radiation matrix (11) of a cylindricality and be arranged on described heat radiation matrix (11) radiating fin (12) all around and form, it is characterized in that also comprising air flue tubular, that have central through hole (2), described air flue (2) is fixedly connected on the side end face of radiator (1), through hole is used for the cross-ventilation heat radiation perpendicular to radiator (1) end face.

2. heat abstractor according to claim 1 is characterized in that being provided with two air flues (2) on a side end face of radiator (1), and two air flues (2) are mutually symmetrical, and leave the gap between two air flues (2).

3. heat abstractor according to claim 1 and 2 is characterized in that described air flue (2) adopts heat-barrier material to make.

4. a LED light fixture that uses the described heat abstractor of claim 2 includes the Lights section, heat abstractor and power unit, it is characterized in that:

Described heat abstractor comprises a radiator (1), this radiator (1) is by the heat radiation matrix (11) of a cylindricality and be arranged on described heat radiation matrix (11) radiating fin (12) all around and form, and be fixedly connected on two air flues that be mutually symmetrical, that have central through hole (2) on described radiator (1) one side end face, the through hole of described air flue (2) leaves the gap perpendicular to radiator (1) end face between two air flues (2);

Described power unit (41) is installed on radiator (1) end face with air flue (2) homonymy, in the gap between two air flues (2);

Described the Lights section comprises a boss (31), be installed in the reflector (33) on the boss (31), be inlaid in reflector (33) bottom and be fixed at least one led chip (32) on the boss (31), and the transmissive mirror (35) that is installed in reflector (33) front end, described the Lights section is inlaid on the heat radiation matrix (11) by boss (31), is connected on radiator (1) end face that is positioned at air flue (2) opposite side;

Described power unit (41) is connected with led chip (32) circuit.

5. LED light fixture according to claim 4 is characterized in that described LED light fixture also comprises the lampshade of a tubular (52), and described the Lights section, heat abstractor and power unit are installed in the lampshade (52).

6. LED light fixture according to claim 5 is characterized in that leaving the space between lampshade (52) and heat abstractor.

7. LED light fixture according to claim 4 is characterized in that described LED light fixture also includes a fixed support (51), and described fixed support (51) is installed on the radiator (1), and holder part is positioned at the upper end of air flue (2).