CN101408298B

CN101408298B - Upright post type LED heat radiator

Info

Publication number: CN101408298B
Application number: CN2007100468420A
Authority: CN
Inventors: 金松山
Original assignee: 金松山
Current assignee: Polytron Technologies Inc
Priority date: 2007-10-09
Filing date: 2007-10-09
Publication date: 2010-10-13
Anticipated expiration: 2027-10-09
Also published as: CN101408298A

Abstract

The invention discloses a vertical column shaped LED radiator, comprising a vertical column shaped heat-conductor, a heat transmission sheet, a heat dissipation shell and a large power LED; the vertical column shaped heat-conductor is internally provided with a vertical column shaped hole; a heat conductor is plugged in one side of the vertical column shaped hole; and furthermore, the large power LED is fixed on the end surface of the vertical column shaped heat conductor and the heat conductor. The external circumference of the vertical column shaped heat conductor is longitudinally provided with more than one heat transmission sheet and ribs; two sides of the heat transmission sheet are respectively provided with a wing; the end section of the heat transmission sheet is connected with the heat dissipation shell which is provided with a connection hole and a fin; and the ribs and the wings between two heat transmission sheets are longitudinally arranged in parallel. The vertical column shaped LED radiator adopts aluminium materials with good heat conduction performance, is integrated into a whole by extrusion process, can be used by cutting, has compact structure, reduces the cost, and can comply with various high-power or other typed semiconductor illumination lamps such as development streamer lamps, lamps embedded in ceilings, suspension lamps, automobile headlamps, street lamps and the like.

Description

Upright post type LED heat radiator

Technical field

The present invention relates to a kind of electronic radiation device, particularly a kind of upright post type LED heat radiator.

Background technology

The semi-conductor electricity light source is a kind of electric light source that does not have filament, is a kind of luminescent device that directly electric energy is converted into luminous energy, is called light emitting diode, is also referred to as semiconductor lamp, the English LED that is called for short.Semiconductor lighting is considered to the new energy-conserving light source of illumination of 21 century.LED is not only energy-conservation, also have the life-span long, volume is little, safety, environmental protection, characteristics such as non-maintaining, easy to control.LED can replace conventional light source to use in a lot of places, and the speed of LED replacement traditional lighting light source has been quickened in the particularly appearance of great power LED, also makes LED become real in the large-area applications of room lighting.

Great power LED is a direction of LED industry future development, but great power LED has relatively high expectations to heat dissipation technology, and the power of led module is big more, and the heat flow density of its chip is just high more.The temperature of led chip sharply rises when the effect of radiator is bad, the very fast generation light decay of meeting, even damage led chip.Have only the heat dissipation technology that solves great power LED, delay the light decay of LED to greatest extent, could promote the application of great power LED widely.

At present, the heat radiation of high-power LED module is adopted plate shaped extrusion section bar electronic radiation device mostly or is adopted aluminium ingot Digit Control Machine Tool processing heat radiator and hot pipe technique.The geometry of the electronic radiation device of this structure is fixing, and volume is big, and is poor with LED radiator structure matching; Hot pipe technique cost height, easy dust stratification dirt in the fin; Adopt the radiator of aluminium ingot Digit Control Machine Tool processing, its development cost are very high.

Summary of the invention

Fixing for the geometry that solves the electronic radiation device, volume is big, and is relatively poor and be not suitable for the heat radiation of great power LED with LED heat radiation matching, the invention provides a kind of upright post type LED heat radiator.

The technical solution adopted for the present invention to solve the technical problems is: comprise upright post type heat carrier, heat transfer sheet, radiating shell and great power LED, in the upright post type heat carrier, have the upright post type hole, in a side in upright post type hole, fill in a kind of heat carrier, so-called a kind of heat conductor shape is a kind of in the following form: aluminium flake, aluminium bar, copper sheet, copper rod, one side closed copper pipe, heat pipe, and on the end face of upright post type heat carrier and a kind of heat carrier, be fixed with great power LED.

On the periphery of described upright post type heat carrier, be vertically arranged with an above heat transfer sheet and fin; The both sides of heat transfer sheet are provided with fin; On the heat transfer sheet latter end, be connected with radiating shell, radiating shell is provided with connecting hole and fin; Fin between two heat transfer sheets and fin are vertically to arrange with parallel mode.

In the latter end form of heat transfer sheet of the present invention, select a kind of in open-type hole and the radiating shell form for use; Periphery by heat transfer sheet and fin begins, and transverse cuts and is cut into out several annular grooves to the periphery of upright post type heat carrier.

The invention has the beneficial effects as follows, the structure that this direction that makes progress along thermal current is arranged radiated rib is compared with traditional plate shaped electronic radiation device, its remarkable advantage is, the heat of great power LED is absorbed heat fast by a kind of heat carrier, logical peraluminous upright post type heat carrier, heat is conducted on heat transfer sheet and the radiating shell, again these large tracts of land heats and surrounding air are carried out heat exchange, can reduce the temperature difference between radiator and the surrounding air, the temperature of great power LED will be reduced to greatest extent, reduce the light decay of great power LED, reach the purpose that improves the great power LED life-span, secondly advantage is, upright post type LED heat radiator is to adopt the good aluminium material of thermal conductivity, is integral with extrusion process, and can cut use, compact conformation reduces cost, and can satisfy the exploitation shot-light, ceiling embedded lamp, hang lamp, headlight for vehicles, multiple high power such as street lamp or other semiconductor lamps.

Description of drawings

Fig. 1 is the edge face structure figure of first kind of embodiment of the present invention.

Fig. 2 is the vertical section structural map of Fig. 1.

Fig. 3 is the edge face structure figure of second kind of embodiment of the present invention.

Fig. 4 is the vertical section structural map of the third embodiment of the present invention.

1. upright post type heat carriers among the figure, 101. upright post type holes, 2. heat transfer sheet, 3. radiating shell, 301. connecting holes, 302. connecting holes, 4. fin, 5. fin, 6. fin, 7. fin, 8. fin, 9. heat carrier, 10. great power LED, 11. open-type holes.

The specific embodiment

By Fig. 1～shown in Figure 3, the present invention includes upright post type heat carrier 1, heat transfer sheet 2, radiating shell 3 and great power LED 10, in upright post type heat carrier 1, have upright post type hole 101, in order to reduce the temperature of great power LED 10 fast, in a side in upright post type hole 101, fill in a kind of heat carrier 9, and on the end face of upright post type heat carrier 1 and a kind of heat carrier 9, be fixed with great power LED 10.

So-called a kind of heat carrier 9 be shaped as aluminium flake, aluminium bar, copper sheet, copper rod, one side closed copper pipe, heat pipe.Because of the watt level of great power LED 10, its caloric value is just different, thus can be according to the structure of light fixture and used LED watt level, select a kind of in the above form for use.That selects copper material when general LED lamp power is big for use fills in upright post type hole 101.Because of copper material has superpower heat absorption capacity, can come the suction of the heat of great power LED 10 fast, conduction is given on heat absorption and the upright post type heat carrier 1 and heat transfer sheet 2 of heat radiation than balanced aluminium matter, carries out heat exchange by radiating shell 3 and surrounding space again.

On the periphery of described upright post type heat carrier 1, be vertically arranged with an above heat transfer sheet 2 and fin 8; The both sides of heat transfer sheet 2 are provided with fin 6 and fin 7; On the latter end of heat transfer sheet 2, be connected with the radiating shell 3 of taking into account heat radiation and dust protection, radiating shell 3 is provided with connecting hole 301, connecting hole 302, fin 4 and fin 5; Fin 8 and fin 7 between two heat transfer sheets 2 are vertically to arrange with parallel mode, and adopt the good aluminium material of thermal conductivity, are integral by extruding or extrusion process.

When several great power LEDs 10 are combined into the high power semiconductor lighting lamp tool, generally select for use the latter end of heat transfer sheet 2 to be provided with the form in open-type hole 11.By shown in Figure 4, in order further to improve radiating effect, periphery by heat transfer sheet 2 and fin 8 begins, transverse cuts is to the periphery of upright post type heat carrier 1, produce several annular grooves thus and increase the sectional area that carries out heat exchange with air, and on the end face of upright post type heat carrier 1 and a kind of heat carrier 9, be fixed with great power LED 10.Also can on its both sides end face, all can be fixed with great power LED 10 in case of necessity.

The hot substrate fixed form of great power LED 10 generally is dull and stereotyped multiangular, dull and stereotyped stripe shape, patch-type, and screw bolt-type (copper material) is also arranged.The size of the shape of great power LED 10 and its fixed form different, the inner and outer diameter of upright post type heat carrier 1 is then different with geometry, and its heat transfer sheet 2, fin 8, fin 6 and fin 7, and number, geometry and the size of fin 4 and fin 5 are also different.

The present invention also can parallel way piece together multiple high power semiconductor lighting lamp tools such as making circular, square, rectangle, bar shaped and polygonal.

Claims

1. upright post type LED heat radiator, comprise upright post type heat carrier, heat transfer sheet, radiating shell and great power LED, in the upright post type heat carrier, have the upright post type hole, in a side in upright post type hole, fill in a kind of heat carrier, so-called a kind of heat conductor shape is a kind of in the following form: aluminium flake, aluminium bar, copper sheet, copper rod, one side closed copper pipe, heat pipe, it is characterized in that: on the end face of upright post type heat carrier and a kind of heat carrier, be fixed with great power LED, on the periphery of upright post type heat carrier, be vertically arranged with an above heat transfer sheet and fin; The both sides of heat transfer sheet are provided with fin; On the heat transfer sheet latter end, be connected with radiating shell, radiating shell is provided with connecting hole and fin; Fin between two heat transfer sheets and fin are vertically to arrange with parallel mode.

2. upright post type LED heat radiator according to claim 1 is characterized in that: do not connect radiating shell on the latter end of heat transfer sheet, and select for use the latter end of heat transfer sheet to be provided with the form in open-type hole.

3. upright post type LED heat radiator according to claim 1 is characterized in that: the periphery by heat transfer sheet and fin begins, and transverse cuts and is cut into out several annular grooves to the periphery of upright post type heat carrier.

4. upright post type LED heat radiator according to claim 1 is characterized in that: the aluminium material that it is good that upright post type heat carrier, heat transfer sheet and radiating shell all adopt thermal conductivity is made.