CN102506403A

CN102506403A - Method for manufacturing radiator and product by same

Info

Publication number: CN102506403A
Application number: CN2011103518127A
Authority: CN
Inventors: 罗哲兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-09
Filing date: 2011-11-09
Publication date: 2012-06-20

Abstract

The invention discloses a method for manufacturing a radiator and a product by the same, and in particular belongs to a method for manufacturing a light emission radiator and a product by the same. Metal fins of the radiator are formed by continuously punching an aluminum alloy with a size of 0.1 to 0.5mm; a hollow body (2) is tightly sleeved in the middle of a fin-shaped cone (3) of the radiator; the upper part of the fin-shaped cone (3) is provided with a groove (6); a spring snap ring (1) is arranged in the groove of the fin-shaped cone (3); heat-conducting objects are filled in a contact gap between the fin-shaped cone (3) and the hollow body (2); and the spring snap ring (1) is a stainless steel spring snap ring (1).

Description

A kind of manufacturing approach of radiator and goods thereof

Affiliated technical field

The present invention relates to a kind of manufacturing approach of light emitting devices, especially belong to a kind of manufacturing approach and goods thereof of light emission radiator.

Background technology

The same with conventional light source, semiconductor light emitting diode (LED) also can produce heat during operation, and how much it depends on whole luminous efficiency.Power up outside under the energy, the radiation recombination generation electroluminescent in electronics and hole, semiconductor medium and encapsulation medium that near the light that PN junction, radiates also need pass through chip itself just can arrive at external world's (air).Comprehensive electric current injection efficiency, radioluminescence quantum efficiency, chip exterior light take out efficient etc.; Finally probably have only the input electric energy of 30-40% to be converted into luminous energy, the form of the lattice vibration that the energy of all the other 60-70% mainly takes place with non-radiation recombination transforms heat energy.

Since the p type of III group-III nitride mix be subject to solubility that Mg led and hole higher startup can, heat is especially easily in p type region generating, this heat must could dissipation on heat sink through total; The heat radiation approach of LED device mainly is heat conduction and thermal convection current; The thermal conductivity that backing material is extremely low causes the device thermal resistance to increase, and produces serious self-heating effect, and the Performance And Reliability of device is produced destructive influence.

Heat concentrates in the small-sized chip, and chip temperature raises, and causes the sharp decrease in efficiency of penetrating of non-uniform Distribution, chip light emitting efficient and phosphor powder of thermal stress; When temperature surpassed certain value, the component failure rate is index law to be increased.Statistics shows, 2 ℃ of the every risings of component temperature, reliability decrease 10%.When a plurality of LED dense arrangement were formed white lumination system, the dissipation problem of heat was more serious.Solve thermal management issues and become the prerequisite that high-brightness LED is used.

The most direct method of brightness that improves power LED is to increase input power, and in order to prevent the saturated size that must correspondingly increase p-n junction of active layer; Increase input power chip temperature is raise, and then quantum efficiency is reduced.The raising of single tube power depend on device derives heat from p-n junction ability, keep existing chip material, structure, packaging technology, the chip power current density is constant and the radiating condition that is equal under, increase the size of chip separately, chip temperature will constantly rise

Light emission radiator adopts the heat dissipation metal fin; This is modal radiating mode, and the common metal radiating fin increases area of dissipation as the part of shell, but existing heat dissipation metal fin is because fault of construction; Radiating effect is undesirable usually, and its structure that haves much room for improvement improves radiating efficiency.

Summary of the invention

Invent technical problem to be solved: production method and correlated product thereof that a kind of light emission radiator is provided.

The technical solution adopted for the present invention to solve the technical problems is:

---punching press---is milled------hook joint---embedding spring arch clasp---packing that is coated with the heat conduction thing clearly in technological process: cut material

The radiator metal fins adopts 0.1 to 0.5mm alloy aluminum to be stamped to form continuously; Thereby reach the good more requirement of the wide more radiating effect of radiator heat-dissipation area; Save material 70%---900% (large-scale more material saving more) than traditional Section Bar Heat Sinks; Because this product adopts automatic continuous mould production, when reducing labour intensity, also greatly reduce labour cost.

Light emission contain hollow with the tundish of conical metal fins radiator or hollow arbor braid at the bottom of cylinder, the hollow shape of said " hollow or hollow arbor braid at the bottom of cylinder " also can be " a kind of hollow cone or open circles rhombogen or square hollow body; Or a kind of in the band end hollow cone, band end open circles rhombogen, band end square hollow body ".

The aforementioned hollow shape abbreviates " hollow body " in the present invention as; The peripheral conical metal fins of hollow body abbreviates " fin-type cone " as.

Hollow body and fin-type cone both can be an integral body, also can break.When hollow body and fin-type cone are can break state the time; Then hollow body tightly overlaps among the fin-type cone internal diameter; Can fill the heat conduction thing between the slit of both contacts; In order to guarantee that both can not separate and come off under user mode for hollow body and fin-type cone, can take following measure:

Adopt adhesive to be connected between the slit between measure 1 hollow body and the fin-type cone, hollow body is not separated with the fin-type cone.But these technical measures have shortcoming, promptly between both slits because of having used adhesive, will have influence on the heat conduction of heat conduction thing, even can't use the heat conduction thing, use the heat conduction thing can influence the gluing effect of adhesive; Along with the growth of service time, the adhesive tension of adhesive can diminish, and it is no longer tight to cause hollow body to contact with the fin-type cone, even both separate and fin is scattered, and have a strong impact on radiating effect;

Measure 2 is fluted on fin-type cone top, and hollow body closely cover is embedded in the middle of the fin-type cone, is filled with the heat conduction thing in the slit between the two, inlay card spring arch clasp in fin-type cone groove, and the contraction strength of utilizing spring arch clasp is with both fastenings.Because of physics strength that spring arch clasp arranged with hollow body and fin-type cone closely fastening, assurance hollow body that can be lasting does not separate with the fin-type cone.The suitable stainless steel material that uses of spring arch clasp.

The invention has the beneficial effects as follows:

1. the light emission adopts alloy aluminum to be stamped to form continuously with conical metal fins; Thereby reach the good more requirement of the wide more radiating effect of radiator heat-dissipation area; Save material 70%---900% (large-scale more material saving more) than traditional Section Bar Heat Sinks; Because this product adopts automatic continuous mould production, when reducing labour intensity, also greatly reduce labour cost.Metal fins of the present invention and cylindrical is connected that inlay card has spring arch clasp when using heat conduction thing such as silica gel, and this has also improved radiating effect and service life greatly.

2. product of the present invention and existing product (finger) with reference to product equal room temperature 32 degree work after 24 hours testing result following: this product weight of 3WLED light fixture is 18.95 grams, and temperature 46 degree, existing product are 127 grams, 53 degree; This product of 7WLED light fixture is 28.8 grams, 46.5 degree, and existing product is 365 grams, 54 degree; This product of 9WLED light fixture is 40.75 grams, 47 degree, and existing product is 505 grams, 53.5 degree; This product of 18WLED light fixture is 50.15 grams, 49 degree, and existing product is 684 grams, 56 degree---explain that technique effect of the present invention has reached the level of signifiance.

3. inlay card spring arch clasp in fin-type cone groove; The strength of utilizing spring arch clasp is with hollow body and the fastening of fin-type cone; Because of the physics strength of spring arch clasp with hollow body and fin-type cone closely fastening; Can need not to use adhesive with both tight fastenings at one, can guarantee the heat-conducting effect of the heat conduction thing between both slits, improved the radiating effect of radiator; And guarantee that hollow body and fin-type cone link closely enduringly and be an integral body, the service life of having improved radiator.

4. spring arch clasp uses stainless steel material, can prevent that spring arch clasp from getting rusty and influence service life of radiator.

5. because of radiator fins thickness is 0.2-0.4mm, be thinner than common radiator fins thickness 0.1-0.2mm, so the radiating effect of product of the present invention is better.Along with the reduction of radiator fins thickness, equaled to reduce the weight of radiator own, when having practiced thrift material, and alleviated the weight of overall optical emitter, be beneficial to light emitting devices and install and move.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is spring arch clasp outside drawing and broken section enlarged drawing thereof.

Fig. 2 is the hollow body stereogram.

Fig. 3 is a fin-type cone stereogram.

Fig. 4 is heat radiator assembly figure.

Fig. 5 is the radiator profile.

Fig. 6 is the radiator upward view.

Fig. 7 is that radiator upward view and fin thereof connect bottom broken section enlarged drawing.

Fig. 8 is that radiator is faced face figure.

Fig. 9 is a top perspective view.

Figure 10 is a face upwarding stereogram.

1. spring arch clasps among Fig. 1 to Fig. 5,2. hollow body, 3. fin-type cone, 4. spring arch clasp breach, 5. fin-type cone centre hole, 6. groove.

The specific embodiment

---punching press---is milled------hook joint---embedding spring arch clasp---packing that is coated with the heat conduction thing clearly in technological process: cut material.

The light emission adopts 0.1 to 0.5mm alloy aluminum to be stamped to form continuously with conical metal fins; Thereby reach the good more requirement of the wide more radiating effect of radiator heat-dissipation area; Save material 70%---900% (large-scale more material saving more) than traditional Section Bar Heat Sinks; Because this product adopts automatic continuous mould production, when reducing labour intensity, also greatly reduce labour cost.

The internal diameter of the hollow body of Fig. 2 (2) external diameter and height and the fin-type cone centre hole (5) of Fig. 3 and highly identical, hollow body (2) has the end, bottom that the hole of fixed light emitter is arranged.Hollow body (2) outer wall and fin-type cone centre hole (5) inwall are smeared the heat conduction thing; Then hollow body (2) cover (embedding) is gone in the fin-type cone centre hole (5); Hollow body (2) bottom is positioned at the bottom of fin-type cone centre hole (5); The spring arch clasp (1) of Fig. 1 is snapped in the fin-type cone groove (6) of Fig. 4, utilize the convergent force of spring arch clasp (1) that fin-type cone (3) is become an integral body with hollow body (2) clip, come off to prevent fin-type cone (3) and hollow body (2) enduringly; And be beneficial to the heat conduction thing and be covered with in both slits, the heat that is beneficial on the hollow body (2) is gone up conduction to fin-type cone (3).

The material of making radiator is generally metal, like aluminium alloy, copper, aluminium etc.

Spring arch clasp (1) is suitable for using stainless steel material, and its spring material diameter is generally 0.5 to 14.0mm, and other mechanics and processing performance are with conventional.The width of spring arch clasp breach (4) is generally 5 to 8mm under unused state.The internal diameter of spring arch clasp (1) is usually than the little 12-30mm of external diameter of fin-type cone groove (6).

The same stock size of the apparent size of radiator.The heat conduction thing can be meant heat conductive silica gel.

Radiator fins is each other normally with the splicing of hook connected mode, and Fig. 7 is a kind of fin splicing form.The type of attachment of radiator fins also can be with reference to routine techniques.

Radiator fins is under the prerequisite that can keep suitable intensity, and fin is thin more, and its radiating effect is unreasonable to be thought, its suitable thickness is 0.2-0.4mm usually.

Hollow body (2) also can be called " cylinder ".

Claims

1. manufacturing method of heat radiator; Especially a kind of manufacturing approach of light emission radiator; The radiator metal fins adopts 0.1 to 0.5mm alloy aluminum to be stamped to form continuously; Tightly be with hollow body (2) in the middle of the fin-type cone (3) of this radiator, fin-type cone (3) top fluted (6) is characterized in that described fin-type cone (3) is stamped to form with alloy aluminum continuously.

2. the goods that manufacturing method of heat radiator according to claim 1 is produced is characterized in that spring arch clasp (1) is arranged in described fin-type cone (3) groove (6).

3. the goods that manufacturing method of heat radiator according to claim 1 is produced is characterized in that described fin-type cone (3) is filled with the heat conduction thing with contacting of hollow body (2) in the slit.

4. the goods that manufacturing method of heat radiator according to claim 1 is produced, the spring arch clasp that it is characterized in that (1) is a kind of stainless steel spring snap ring (1).

5. the goods that manufacturing method of heat radiator according to claim 1 is produced is characterized in that described fin-type cone (3) fin thickness is 0.2-0.4mm.