CN202274468U

CN202274468U - LED (light-emitting diode) lamp radiating structure

Info

Publication number: CN202274468U
Application number: CN2011203988630U
Authority: CN
Inventors: 白钰; 林日国
Original assignee: Beijing Ruiyang Anke Technology Co Ltd
Current assignee: Beijing Ruiyang Anke Technology Co Ltd
Priority date: 2011-10-19
Filing date: 2011-10-19
Publication date: 2012-06-13
Anticipated expiration: 2021-10-19

Abstract

The utility model provides an LED (light-emitting diode) lamp radiating structure which comprises a top cover, a heat pipe, a section bar, a sealing member, a sealing cover, an LED substrate and a transparent face mask, wherein the top cover is arc-shaped; a plurality of ribs are distributed in the arc of the top cover; round holes are arranged at two ends of the ribs; a plurality of radiating fins are arranged on the back of the section bar; bases among partial adjacent fins are thickened; holes are drilled at two ends of the bases; the heat pipe is bent twice, one end of the heat pipe is inserted into the round holes of the ribs of the top cover; the other end of the heat pipe is inserted into the round holes of the section bar; a plurality of LED lamp beads are welded on the LED substrate; and the LED substrate and the section bar are locked through bolts. When a lamp is lightened at night, the section bar and the top cover are used for dissipating heat simultaneously, so that the heat dissipation effect is good; in the daytime, when the lamp is unexpectedly lightened as equipment failure or operation problems occur, the top cover is used for shielding the sunlight to prevent the lamp from being influenced by the sunlight; the lamp dissipates heat through the section bar, so that junction temperature of an LED can be effectively reduced, and irretrievable loss can be further avoided; and moreover, the LED lamp radiating structure has the advantages of easiness in cleaning and the like.

Description

A kind of LED lamp cooling structure

Technical field

The utility model provides a kind of LED lamp cooling structure, belongs to the LED lighting field.

Technical background

In recent years, the LED illumination has obtained application more and more widely, along with the development of technology, has much the trend that replaces traditional gas-discharge lamp.But LED receives the influence of operating temperature very big, under the normal temperature life-span of LED near unlimited, in case but junction temperature arrives maximum operating temperature, LED can damage at short notice.In the practical application of LED light fixture, unavoidably can occur because equipment fault or operational error cause outdoor LED light fixture to be lighted by day.Light fixture can reach more than 60 ℃ in lamp body surface temperature under the irradiation of the sun, and the temperature rise when adding the light fixture operate as normal is easy to reach the LED maximum operating temperature, causes LED to damage and causes irremediable loss.Other components and parts that comprise the drive circuit that is installed in lamp interior also can be owing to high temperature causes fault, reduction of service life.Present LED light fixture generally is provided with radiating fin at the back, and surface irregularity tires easily long-pending dust and other impurities, influences the light fixture heat radiation.

Summary of the invention

The utility model provides a kind of radiator structure of LED light fixture, comprises top cover, heat pipe, section bar, seal, seal cover, LED substrate and transparent face mask.Described top cover is circular arc, many rib muscle that distribute in the circular arc, and there is circular hole at the two ends of rib muscle.

There is the cascade groove structure in described section bar front, base portion distribution screwed hole, and there are many radiating fins at the back; Base between part adjacent fin thickening, and hole respectively at two ends, the adjacent fin section bar two ends and top cover rib muscle correspondence position and between the thickening base excise one section respectively; Residue length is identical with top cover rib muscle length; All the other thickening base portion tappings, the fin thickness direction is divided into multistage through repeatedly excision.

Described heat pipe bends through twice 90 ° of circular arcs, and an end inserts in the circular hole of top cover rib muscle, and the other end inserts in the section bar circular hole, forms tight connection through welding, mechanical pressing, mode such as expand with heat and contract with cold.

Welding plurality of LEDs lamp pearl on the described LED substrate, LED substrate and section bar are through bolt locking.

Described seal is an elastomeric material, and described seal cover compressing sealing element is connected with section bar through bolt.

Described transparent face mask is installed in the positive groove of section bar, forms airtight space with the seal cover at section bar and section bar two ends, plays the dustproof and waterproof effect.

Light fixture work at night is that heat is transmitted on the LED substrate from led chip, is transmitted to section bar from substrate again; Section bar is heated afterwards and cross-ventilation and heat loss through radiation; Conduct heat on the top cover through heat pipe simultaneously, through convection current and heat loss through radiation, better heat radiating effect is played in the dual heat radiation of section bar and top cover to top cover again and between the air; Effectively reduce the junction temperature of led chip, prolonged its service life.

When equipment fault or misoperation caused light fixture to be lighted by day, solar light irradiation was on top cover, and the top cover heating temperature raises.But heat pipe thermal conductivity from bottom to top is good, and reverse heat conductivility is poor, and the heat of top cover is difficult to be transmitted on the section bar through heat pipe.The temperature of blocking lower sectional material at top cover is not influenced by sunshine simultaneously, and variations in temperature is little.Even when the light fixture accident is lighted, still can be lower than maximum operating temperature to guarantee the LED junction temperature, in order to avoid damage through the section bar heat radiation.

It is circular-arc that top cover is, smooth outer surface, and therefore the impurity such as dust of surface accumulation are removed under the effect of wind and weather easily, guarantee not obvious variation of long-time use radiating effect.

Description of drawings

Fig. 1 is the utility model explosive view

Fig. 2 is the section bar cross sectional view

Fig. 3 is the section bar sketch map

Fig. 4 is the top cover right view

Fig. 5 is the top cover upward view

Among the figure: 1 top cover, 2 heat pipes, 3 section bars, 4 seals, 5 seal covers, 6LED substrate, 7 transparent face masks.

The specific embodiment

The utility model provides a kind of radiator structure of LED light fixture, comprises top cover, heat pipe, section bar, seal, seal cover, LED substrate and transparent face mask.The front of section bar and LED substrate be through bolt locking, two ends respectively with seal, seal cover locking, section bar back and heat pipe, heat pipe and top cover closely are connected through welding, mechanical pressing, mode such as expand with heat and contract with cold.

When light fixture was worked night, heat was transmitted on the LED substrate from led chip, is transmitted to section bar from substrate again; Section bar is heated afterwards and cross-ventilation and heat loss through radiation; Conduct heat on the top cover through heat pipe simultaneously, through convection current and heat loss through radiation, better heat radiating effect is played in the dual heat radiation of section bar and top cover to top cover again and between the air; Effectively reduce the junction temperature of led chip, prolonged its service life.

Claims

1. the radiator structure of a LED light fixture comprises top cover, heat pipe, section bar, seal, seal cover, LED substrate and transparent face mask, it is characterized in that:

1) described top cover is circular arc, many rib muscle that distribute in the circular arc, and there is circular hole at the two ends of rib muscle;

2) there is the cascade groove structure in described section bar front, base portion distribution screwed hole, and there are many radiating fins at the back; Base between part adjacent fin thickening, and hole respectively at two ends, the adjacent fin section bar two ends and top cover rib muscle correspondence position and between the thickening base excise one section respectively; Residue length is identical with top cover rib muscle length; All the other thickening base portion tappings, the fin thickness direction is divided into multistage through repeatedly excision;

3) described heat pipe bends through twice 90 ° of circular arcs, and an end inserts in the circular hole of top cover rib muscle, and the other end inserts in the section bar circular hole, forms tight connection through welding, mechanical pressing, mode such as expand with heat and contract with cold;

4) welding plurality of LEDs lamp pearl on the described LED substrate, LED substrate and section bar are through bolt locking;

5) described seal is an elastomeric material, and described seal cover compressing sealing element is connected with section bar through bolt;

6) described transparent face mask is installed in the positive groove of section bar, forms airtight space with the seal cover at section bar and section bar two ends, plays the dustproof and waterproof effect.