CN105799340A - Light irradiation device - Google Patents
Light irradiation device Download PDFInfo
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- CN105799340A CN105799340A CN201610134223.6A CN201610134223A CN105799340A CN 105799340 A CN105799340 A CN 105799340A CN 201610134223 A CN201610134223 A CN 201610134223A CN 105799340 A CN105799340 A CN 105799340A
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- Prior art keywords
- fin
- base
- irradiation device
- light irradiation
- heat
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- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims description 44
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000191 radiation effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000511976 Hoya Species 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Led Device Packages (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Coating Apparatus (AREA)
- Ink Jet (AREA)
Abstract
The present invention provides a light irradiation device which is lightweight and thin. The light irradiation device comprises a base plate; multiple LED light sources, which are mounted on a surface of the base plate at a specified interval; a heat dissipating component that includes a base that extends from a back surface of the base plate in a specific direction and spreads heat generated by the LED light sources and a heat sink mounted on a surface of the base and comprising multiple fins that extend in a specific direction, the base and the heat sink being provided with through holes; an LED driving circuit driving the multiple LED light sources mounted on the base; a shell that houses the heat dissipating component and the LED driving circuit and defines an air flowing space, the air flowing space comprising a wind tunnel enclosing the multiple fins, an air duct formed by connection of the through holes in the base and the through holes in the heat sink, and a spce enclosing the LED driving circuit; and a cooling fan that introduces external air into the wind tunnel, the air duct and the space.
Description
The application is applicant HOYA Guande KK to the divisional application of the application for a patent for invention that to be on April 3rd, 2015, application number be the applying date that State Intellectual Property Office submits to 201510157968.X, denomination of invention are light irradiation device.
Technical field
The present invention relates to a kind of it possess have LED (LightEmittingDiode) as light source and the light irradiation device that irradiates linear light, particularly to the light irradiation device of a kind of radiating component possessing and distributing the heat that LED produces.
Background technology
In the past, the printing equipment that the ultraviolet ink being undertaken solidifying by irradiation under ultraviolet ray carries out printing was adopted to be widely known by the people.This printing equipment is ejection ink from the nozzle of shower nozzle to medium, then to forming the specking irradiating ultraviolet light on medium.By irradiation under ultraviolet ray, specking solidifies and is fixed on medium, so the medium for not easily absorbing liquid also can have good printing effect.This printing equipment, for instance, on the books in patent documentation 1.
Printing equipment described in patent documentation 1, possesses and has: the supply unit of conveying printed medium；It is arranged in order in the conveying direction, and sprays 6 shower nozzles of dark green, carmetta, yellow, black, the colored ink such as orange, green respectively；It is arranged in the transporting direction downstream between each shower nozzle, makes 6 temporary fixing irradiation portions of the point-like ink temporary fixing (pegging) that each shower nozzle is sprayed on printed medium；Point-like ink is fully cured and is fixed on being fully cured on printed medium and uses irradiation portion.Printing equipment as described in Patent Document 1, by by point-like ink temporary fixing, be fully cured the solidification in the two stage, it is suppressed that interpenetrating and the diffusion of specking between colored ink.
Temporary fixing irradiation portion described in patent documentation 1, is disposed on the top of printed medium, and on printed medium irradiating ultraviolet light, i.e. so-called UV curing apparatus, it irradiates linear ultraviolet light on the width of printed medium.For lightweight and the densification of corresponding printing equipment self, in temporary fixing irradiation portion, employing LED is as light source, and the width along printed medium is arranged multiple LED.
Prior art patent documentation
Patent documentation 1: Japanese invention patent 2013-252720 publication.
Summary of the invention
The technical problem to be solved in the present invention:
Temporary fixing irradiation portion as described in Patent Document 1 is such, using LED as light source use time, have following problem to produce: input electricity has and a greater part of all can be changed into heat, so the heat sent of LED itself can reduce luminous efficiency and life-span.Additionally, this problem, such as temporary fixing irradiation portion, if when being equipped with multiple LED device, owing to the LED quantity as thermal source increases, it will cause more serious problem.Therefore, adopting LED as, in the light irradiation device of light source, generally all using the structure that the cooling structures such as fin (radiating component) suppress LED to generate heat.
In order to suppress the heating of LED, it is effective for adopting the radiating components such as fin.But, make LED dispel the heat in order to more effective, it is necessary to expand the surface area of radiating component as far as possible, and once expand radiating component, exist for the overall excessive problem of device.Particularly the temporary fixing irradiation portion in patent documentation 1, if the light irradiation device being arranged between each shower nozzle adopts large-scale radiating component, it is necessary for expanding the distance between each shower nozzle, re-quantization and the maximization of the printing equipment caused therefrom itself, will become more serious problem.
In addition, in the light irradiation device that LED uses as light source, when being used for providing the drive circuit of electric current to necessitate to LED, described drive circuit also possesses the semiconductor device such as audion or IC, also there will be the problem that must effectively cool down because of heating.
The present invention just in view of the foregoing, by provide a kind of effective cooling LED and simultaneously cool down LED drive circuit the frivolous and light irradiation device of light weight for the purpose of.
The technical solution used in the present invention is:
In order to achieve the above object, the light irradiation device of the present invention is a kind of on shadow surface, upwardly extends the 1st side, and on 2nd direction orthogonal thereto with the 1st direction, irradiate the light irradiation device with the linear light specifying live width, possess and have: substrate, almost parallel with the 1st direction and the 2nd direction；Multiple LEDs (LightEmittingDiode) light source, is arranged in each appointed interval along the 1st direction on a surface of a substrate, penetrates light on the 3rd direction orthogonal thereto with the 1st direction and the 2nd direction；Radiating component, it, by extending out to assigned direction from the back side of substrate and to the base of the tabular that heat produced by LED light source is diffused and be vertically built up in the one side of base and have the fin of the multiple fins being arranged on assigned direction and form, described base and fin all offers through hole；LED drive circuit, it is arranged on the another side of base, drives multiple LED light source；Housing, while it receives described radiating component and described LED drive circuit, and it is formed with air current flow space, air current flow space includes the wind-tunnel surrounding the plurality of fin, connected, by the through hole on described base, the airway formed with the through hole on fin, and surround the space of described LED drive circuit；Cooling fan, directs outside air into described wind-tunnel, described airway and described space, and produces the air-flow of described assigned direction in described wind-tunnel, described airway and space.
According to this structure, only extend the structure of assigned direction for base and fin, therefore can realize the light irradiation device of light and thin type.Because producing air-flow in wind-tunnel, airway and space by cooling fan, so the radiating component being not only arranged in wind-tunnel is cooled, the LED drive circuit being arranged in space is also cooled simultaneously.
Moreover it is preferred that through hole is close to the position of base substrate along the 1st multiple formation in direction.
Additionally, may be configured as: at least arbitrarily one side in the one side of base and another side, relative assigned direction tilts, and is perpendicular to the cross-sectional area of the cross section of base assigned direction, along with from substrate along assigned direction away from and reduce.
Additionally, this light irradiation device can be constituted as follows: the one side of base tilts relative to assigned direction, fin, with the minimizing of base cross-sectional area, correspondingly becomes big along assigned direction.According to this structure, forming the inclination of respective seat one side and the bigger fin of surface area, therefore radiating efficiency also becomes higher.Additionally, in this case, base and fin the heat dissipation capacity distributed, constituted in the way of approximately fixed along assigned direction.
Additionally, this light irradiation device can be constituted as follows: the another side of base is the plane being parallel to the 1st direction and assigned direction, from this plane to the distance of fin front end, approximately fixed in a specified direction.
Additionally, this light irradiation device can be constituted as follows: the another side of base tilts relative to assigned direction, and the one side of base is parallel to the plane of the 1st direction and assigned direction, from this plane to the distance of fin front end, approximately fixed in a specified direction.
Moreover it is preferred that fin is divided into multiple in a specified direction and is formed.
Moreover it is preferred that assigned direction is the direction in opposite direction with the 3rd.
Moreover it is preferred that the thermal conductivity of base is higher than the thermal conductivity of fin.Additionally, in this case, it is preferable that base is made of copper, and fin is made of aluminum.According to this structure, be formed as radiating effect height and the fin of light weight.
It is sandwiched between base and fin further, it is also possible to possess, the heat of base is conducted the high heat-conducting plate to fin.
Moreover it is preferred that each LED light source has multiple LED element.
Moreover it is preferred that light is the light comprising the wavelength acting on ultraviolet curable resin.
The beneficial effect of the invention:
As it has been described above, according to the present invention, it is achieved while a kind of effective cooling LED and LED drive circuit, the light irradiation device of frivolous and light weight.
Accompanying drawing explanation
Fig. 1 is the outside drawing of the light irradiation device involved by embodiments of the present invention.
Fig. 2 is the figure of the internal structure that the light irradiation device involved by embodiments of the present invention is described.
Fig. 3 is the figure of the understructure that the light irradiation device involved by embodiments of the present invention is described.
Fig. 4 is the figure of the heat radiating fin structure that the light irradiation device involved by embodiments of the present invention is described.
Fig. 5 is the figure of the structure of the radiating component that the light irradiation device involved by embodiments of the present invention is described.
Fig. 6 is the ideograph that the relation between the radiating component of the light irradiation device involved by embodiments of the present invention and the interior produced air-flow of housing is described.
Fig. 7 is the ideograph that the relation between radiating component and the heat dissipation capacity of the light irradiation device involved by embodiments of the present invention is described.
Fig. 8 is the figure of the variation that the light irradiation device involved by embodiments of the present invention is described.
In figure:
1 light irradiation device
100 housings
102 air inlets
105 window portions
110 exhaust fans
200 light source cells
205 substrates
210 LED elements
215 LED drive circuits
300 control substrate
400 radiating components
410 bases
430 fin
Above 414a
Below 414b
434a bearing surface
434b fin forms face
Detailed description of the invention
Below, in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.Further, in figure, identical or corresponding position is by identical sign flag, and its explanation is not repeated.
Fig. 1 is the outside drawing of the light irradiation device 1 involved by embodiments of the present invention, and Fig. 1 (a) is the plane graph of the light irradiation device 1 involved by embodiments of the present invention.In addition, Fig. 1 (b) is the right hand view of the light irradiation device 1 of Fig. 1 (a), Fig. 1 (c) is the ground plan of the light irradiation device 1 of Fig. 1 (a), and Fig. 1 (d) is the front elevation of the light irradiation device 1 of Fig. 1 (a).The light irradiation device 1 of present embodiment is that one is loaded on printing equipment, makes the light supply apparatus of ultraviolet curable ink or ultraviolet curable resin, and it is arranged in the top of thing to be illuminated, the ultraviolet light that thing relatively to be illuminated injection is linear.And, in this manual, as shown in the coordinate of Fig. 1, the direction that aftermentioned LED (LightEmittingDiode) element 210 penetrates ultraviolet light is defined as X-direction, the orientation of LED element 210 is defined as Y direction, and the direction orthogonal thereto with X-direction and Y direction is defined as Z-direction illustrates.
Fig. 2 is the figure of the internal structure that the light irradiation device 1 involved by embodiments of the present invention is described.Plane perspective view when Fig. 2 (a) is to overlook light irradiation device 1.Additionally, Fig. 2 (b) is side perspective view during from right flank viewing light irradiation device 1.Additionally, front perspective view when Fig. 2 (c) is to watch light irradiation device 1 from front.
As depicted in figs. 1 and 2, the light irradiation device 1 of present embodiment possesses has: receive the housing 100 (housing) of the ultra-thin box-shaped of light source cell 200 and radiating component 400 etc. in inside；It is arranged on the window portion 105 of the glass penetrating ultraviolet light before housing 100；It is located at the back side of housing 100,3 exhaust fans 110 of the air in discharge housing 100.Additionally, be formed with the air inlet 102 sucking extraneous air in the bottom surface of housing 100, housing 100.
The light irradiation device 1 of present embodiment, possesses inside housing 100 and has: 4 light source cells 200, control substrate 300, radiating components 400 etc..
As shown in Fig. 2 (a) and (c), 4 light source cells 200, it is close to arrangement along Y direction and is accommodated in housing 100.Each light source cell 200 possesses and has: be parallel to the rectangular substrate 205 of Y direction and Z-direction；There are 4 LED elements 210 of identical characteristics；Drive the LED drive circuit 215 of 4 LED elements 210.
4 LED elements 210, when optical axis is aligned in the X-axis direction, separates the appointed interval surface at substrate 205 in an in-line configuration in the Y-axis direction, and are electrically connected with substrate 205.Substrate 205 is formed as, by being placed in the not shown cable of LED drive circuit 215 on aftermentioned base 410 414a above, connect each LED element 210, come from the driving electric current of LED drive circuit 215 by substrate 205 supply.Once drive electric current to the supply of each LED element 210, then penetrating the ultraviolet light of the light quantity driving electric current corresponding from each LED element 210, being parallel to the linear ultraviolet light of Y direction from the injection of each light source cell 200.And, for the ultraviolet light that each LED element 210 energy quantity of light emission of present embodiment is roughly the same, the driving electric current being supplied to each LED element 210 has been adjusted, from the linear ultraviolet light of each light source cell 200 injection, there is substantially homogeneous light quantity distribution in the Y-axis direction.And, as mentioned above, 4 light source cells 200 of present embodiment, because being close to arrangement along Y direction, so from the ultraviolet light of each light source cell 200 injection, overlapping in the Y-axis direction with the ultraviolet light from adjacent light source cell 200 injection, on the whole (namely, from 4 light source cells 200), extend in the Y-axis direction, there is linear ultraviolet light in the Z-axis direction that specify live width and penetrated by window portion 105.And, each LED element 210 of present embodiment, possesses the LED chip (not shown) having multiple (such as 4) to have generally square light-emitting area, accept the driving electric current from LED drive circuit 215, the ultraviolet light of injection wavelength 365nm.
Controlling substrate 300 is while a kind of LED drive circuit 215 controlling each light source cell 200, also control the circuit substrate of light irradiation device 1 entirety.Control substrate 300, be that user receives input signal by not shown user interface, it is achieved the ON/OFF of each light source cell 200 controls and brilliance control, and exports fault message by user interface to outside.
Radiating component 400, is the component that dispels the heat of a kind of heat that 4 light source cells 200 are distributed.The radiating component 400 of present embodiment, it is close to the back side of the substrate 205 of each light source cell 200 and configures, by conducting the base 410 of heat that each LED element 210 distributes and being close to configuration with base 410 and fin 430 that the heat to base 410 dispels the heat constitutes (Fig. 2 (b)).
Fig. 3 is the figure of the structure that base 410 is described, Fig. 3 (a) is the plane graph of base 410.Additionally, Fig. 3 (b) carries out, with the line A-A of Fig. 3 (a), the sectional view that cuts off.Additionally, Fig. 3 (c) is the front elevation of base 410.
Fig. 4 is the figure of the structure that fin 430 is described, Fig. 4 (a) is the plane graph of fin 430.Additionally, Fig. 4 (b) carries out, with the line B-B of Fig. 4 (a), the sectional view that cuts off.Fig. 4 (c) is the front elevation of fin 430.Additionally, Fig. 4 (d) is the ground plan of fin 430, Fig. 4 (e) is the back view of fin 430.
Fig. 5 is the figure illustrating to be combined the structure of the radiating component 400 constituted by base 410 and fin 430.Fig. 5 (a) is the plane graph of radiating component 400.Additionally, Fig. 5 (b) carries out, with the line C-C of Fig. 5 (a), the sectional view that cuts off, Fig. 5 (c) is the front elevation of radiating component 400.Additionally, Fig. 5 (d) is the ground plan of radiating component 400, Fig. 5 (e) is the back view of radiating component 400.
Base 410 is a kind of by copper (thermal conductivity: 4.01 (W/cm K), proportion: 8.96 (g/cm3)) form the component after processing, as it is shown on figure 3, it heat-conduction part 414 possessing the substrate support 412 having the substrate 205 placing each light source 200, extending to X-direction minus side from substrate support 412.Substrate support 412, in the shape of the rectangular plate-like being parallel to Y direction and Z-direction, the substrate 205 of each light source cell 200 is close on the 412a of front and places and fix (Fig. 3 (c), Fig. 2 (b)).Therefore, heat produced by each LED element 210, reached on base 410 by substrate 205, and reach heat-conduction part 414.
As shown in Fig. 3 (b), heat-conduction part 414 has: the plate-like shape that cross section is tapered, and be parallel to X-direction and Y direction above 414a and relative to 414a above (that is, relative to X-direction) by specified angle tilt after below 414b.That is, the heat-conduction part 414 of present embodiment is configured to: the substrate support 412 placing substrate 205 is more remote apart from X-direction, thickness of slab is (namely, distance between 414a and following 414b above) just get thinner (that is, the cross-sectional area of the cross section being parallel to Y direction and Z-direction tapers into).As it has been described above, in the present embodiment, due to the base end part side (substrate-side) of overstriking heat-conduction part 414, therefore improve heat conveying capacity, and then effectively heat produced by each LED element 210 is delivered to the front end of heat-conduction part 414.And, although from the angle of heat conveying capacity it is also contemplated that by overall for heat-conduction part 414 overstriking, but because of heat-conduction part 414 (namely, base 410) in, have employed the copper that proportion is heavier, in the present embodiment, by adopting conical by its shape to reduce volume, thus reducing the increase of weight.Further, it is also possible to by heat-conduction part 414 is made tapered form, form space between heat-conduction part 414 and housing 100, in order to the mode of the size that can strengthen aftermentioned radiating fin 440 is constituted.
414a on heat-conduction part 414, is formed with multiple jut 414c of the fixing LED drive circuit 215 supporting each light source cell 200.Additionally, be formed with multiple through hole 414d of through to the following 414b of above 414a from heat-conduction part 414.Through hole 414d is inserted into the screw hole of the screw (not shown) for firm banking 410 and fin 430.Additionally, in heat-conduction part 414, be formed from the through multiple through hole 414e to 414b of the above 414a of heat-conduction part 414.In detail as described later, through hole 414e is formed with airway, and it delivers to 414a side above by being sucked into the air of 414b side below heat-conduction part 414 from outside.Additionally, from 414b below heat-conduction part 414, protrude the alignment pin 415 that fin 430 is positioned.
Fin 430 is a kind of by aluminum (thermal conductivity: 2.37 (W/cm K), proportion: 2.70 (g/cm3)) form the component after processing.As shown in Figures 4 and 5, it possesses has: embeds the fitting portion 432 of the substrate support 412 of base 410, extend out to rear (X-direction minus side), the connecting portion 434 being connected with base 410 from fitting portion 432.As shown in Fig. 4 (b) and (c), fitting portion 432 has the plate-like portion 432a of the rectangular plate-like being parallel to Y direction and Z-direction, protrudes from the positive side of X-direction from the front of plate-like portion 432a and extend to a pair protuberance 432b of Y direction, and its cross section is U-shaped.Additionally, plate-like portion 432a be formed from X-direction watch time shape in the form of a substantially rectangular opening 432c.Opening 432c is combination base 410 and during fin 430, for the opening that the heat-conduction part 414 of base 410 passes through.
Connecting portion 434, the shape of rectangular tabular, after combination base 410 and fin 430, it has the bearing surface 434a relative for 414b with below base 410 and defines the formation face 434b of multiple radiating fin 440.As shown in Fig. 4 (b), the connecting portion 434 of present embodiment, tilt relative to X-direction in the angle identical for 414b with below base 410, when after base 410 with fin 430 combination, be close to below base 410 by the bearing surface 434a of connecting portion 434 and constituted in the way of 414b.Therefore, when base 410 combines with fin 430, the heat of base 410 can reach on fin 430.
Radiating fin 440, vertically sets up in the way of prominent from the fin of connecting portion 434 formation face 434b to Z-direction, and is dissipated in air by the heat reaching fin 430.And, in detail as described later, in the present embodiment, by exhaust fan 110 by extraneous air suction casing 100, making the air being inhaled in radiating fin 440 Surface runoff by the air-flow of generation X-direction, radiating fin 440 is by extended in the way of X-direction extension.Additionally, as shown in Fig. 4 (b), (d) and (e), the radiating fin 440 of present embodiment, it is divided into multiple (4) in the X-axis direction and is formed.Additionally, the overhang of radiating fin 440 (size of radiating fin 440), according to from fitting portion 432 along X-direction away from and become big, thus improving cooling effect.
As shown in Fig. 4 (a) and (c), on the bearing surface 434a of connecting portion 434, it is formed for the embeded slot 435 that the alignment pin 415 of fin 430 embeds.Additionally, on connecting portion 434, be formed with multiple screw hole 434c of firm banking 410 and fin 430.Additionally, on connecting portion 434, be formed from the bearing surface 434a of connecting portion 434 through to the multiple through hole 434d forming face 434b.And, when after base 410 with fin 430 combination, the through hole 414d of base 410 connects with the screw hole 434c of fin 430, and the through hole 414e of base 410 connects (Fig. 5 (a), (b)) with the through hole 434d of fin 430.
When the radiating component 400 combined by base 410 and fin 430 is assembled, heat-conduction part 414 at the opening 432c inserted base 410 of fin 430, and base 410 is pressed into X-direction minus side relative to fin 430, the fitting portion 432 of fin 430 embeds the substrate support 412 (Fig. 5) of base 410.Further, alignment pin 415 is embedded in embeded slot 435 and base 410 and fin 430 are positioned, so that 414b is close to the bearing surface 434a of fin 430 below base 410.Additionally, in this state, it is tightened in screw hole 434c by through hole 414d.Thus, base 410 and fin 430 are completely fixed, and radiating component 400 is completed.
As mentioned above, in the present embodiment, the thickness of slab of heat-conduction part 414, X-direction is left more remote then more thin from the substrate support 412 placing substrate 205, while heat produced by LED element 210 is delivered to X-direction minus side, by making larger space on X-direction minus side, and in this space, form bigger radiating fin 440 as far as possible, form the radiating component 400 with high efficiency and heat radiation effect.In addition, by combine the high copper base 410 of thermal conductivity and thermal conductivity than copper is slightly weak but aluminum thermal fin 430 that proportion is lighter than copper constitutes radiating component 400, therefore when radiating component 400 is made of copper than entirety light, and than overall made of aluminum time radiating efficiency high.Additionally, as it has been described above, the radiating component 400 of present embodiment, along X-direction, rearward (that is, X-direction minus side) extends, constitute by not prominent Y direction and Z-direction.Therefore, the Y direction of light irradiation device 1 and the size of Z-direction can control to minimum.
Secondly, the cooling effect of the radiating component 400 of present embodiment is illustrated.Fig. 6 is to radiating component 400 ideograph that the relation of produced air-flow illustrates with in housing 100.Additionally, Fig. 7 is the ideograph that the relation between radiating component 400 and heat dissipation capacity is illustrated.
Shown in Fig. 6, the light irradiation device 1 of present embodiment, 3 exhaust fans 110 are possessed at the back side of housing 100.Additionally, the bottom surface of housing 100, in housing 100, it is formed with the air inlet 102 sucking extraneous air.Therefore, exhaust fan 110 1 rotates, and sucks extraneous air from air inlet 102, and the air in housing 100 is discharged from exhaust fan 110.Therefore, in housing 100, in Fig. 6, the air-flow that generation solid arrow represents.It is to say, be sucked into the air in housing 100 from air inlet 102, flow along X-direction in the space (that is, being provided with the space of radiating fin 440) surrounded by fin 430 and housing 100.Therefore, produce by each LED element 210, and reached the heat (in Fig. 6, representing with dotted arrow) of fin 430 by substrate 205 and base 410, be dissipated in air by radiating fin 440.So, in the present embodiment, constitute a kind of wind-tunnel with housing 100 and fin 430, by limiting the space of air current flow, be effectively taking place cooling.
Additionally, in the present embodiment, the through hole 414e of base 410 connects with the through hole 434d of fin 430, the airway that the air being formed for being inhaled in housing 100 passes through.Therefore, it is inhaled into the air in housing 100, by through hole 434d and through hole 414e, also by the space of the above 414a side of heat-conduction part 414.Therefore, the structure according to present embodiment, the LED drive circuit 215 and the control substrate 300 that are arranged in the above 414a side of heat-conduction part 414 can also cool down.
In addition, as shown in Figure 7, the heat-conduction part 414 of the radiating component 400 of present embodiment, with along with the substrate support 412 from placement substrate 205 is away from X-direction, thickness of slab (that is, above distance) between 414a with 414b below can the mode of thinning (cross-sectional area of namely vertical with X-direction cross section tapers into) be constituted.Further, thinning by heat-conduction part 414 and in the space that obtains, be formed with the radiating fin 440 become larger along X-direction, constituted in the way of approximately fixed in the X-axis direction by the distance from the above 414a of base 410 to the front end of radiating fin 440.
At this, as considered the thermal resistance of base 410, through base 410 heat (namely, heat produced by all of LED element 210) Q1 (W), each light source cell 200 substrate 205 temperature (namely, the temperature of substrate support 412) and temperature difference Δ T (DEG C) of fin 430, the thermal resistance R (DEG C/W) of base 410, base 410 length (namely, the length of heat-conduction part 414) L (m), base 410 cross-sectional area (that is, the cross-sectional area of heat-conduction part 414) A (m2), the relation of the thermal conductivity λ (W/m DEG C) of base 410, it is possible to represented by equation below (1) and formula (2).
Q1 (W)=Δ T (DEG C)/R (DEG C/W) (1)
R (DEG C/W)=L (m)/(A (m2)×λ(W/m℃)(2)
As mentioned above, heat produced by LED element 210, heat-conduction part 414 is reached from the substrate support 412 of base 410, further spread to the front (X-direction minus side) of heat-conduction part 414, because being rejected heat to from the air that air inlet 102 is inhaled into by the radiating fin 440 of fin 430, so the heat Q1 through base 410 is maximum in close substrate support 412 side, along with gradually decreasing away from X-direction minus side.Therefore, in the present embodiment, as shown in Figure 7, it is uniformly dispersed (namely by the heat Q1 of base 410 along X-direction, along with becoming big away from X-direction minus side gradually thermal resistance R), the cross-sectional area that is perpendicular to the cross section of the X-direction of heat-conduction part 414 taper into (that is, the base end part side (substrate-side) of heat-conduction part 414 is thicker).It is to say, make the relative X-direction of 414b below base 410 tilt by specified angle.Further, thus, below base 410,414b side ensure that the adequate space needed for radiating fin 440.
Specifically, as shown in Figure 7, the heat-conduction part 414 of present embodiment, there is the length of about 80mm in X-direction, assume that heat Q1 produced by all of LED element 210 is 200 (W), in order to the heat dissipation capacity making the X-direction each position of heat-conduction part 414 is each impartial (25 (W)), by the ratio of the cross-sectional area of each cross section when cutting off heat-conduction part 414 along the every 10mm of X-direction, it is set as 1.00,0.85,0.72,0.61,0.52,0.44,0.38,0.32 successively from the side near substrate support 412.
Secondly, as considered the heat dissipation capacity of fin 430, the heat flow Q2 (W) of fin 430, fin 430 coefficient of overall heat transmission α (W/m2DEG C), the surface area B (m of fin 4302), relation between the temperature of fin 430 and temperature difference Δ T (DEG C) of air being inhaled into from air inlet 102, equation below (3) can be passed through and represent.
Q2 (W)=α (W/m2℃)×B(m2)×ΔT(℃)(3)
As shown in Figure 6, in the present embodiment, it is configured to: at the air inlet formed below 102 of the base end side (210 sides of LED element) of fin 430, carried out the radiating fin 440 of cold sink 430 by the air being inhaled in housing 100 from air inlet 102.At this, it is sucked into the air in housing 100 from air inlet 102, in the space surrounded by fin 430 and housing 100 (namely, it is provided with the space of radiating fin 440) interior along X-direction flowing, therefore the air themperature of radiating fin 440 is cooled down, low at the base end side (LED element 210 side) of fin 430, uprise in the front of fin 430.That is, Δ T (DEG C) in formula (3), the base end side (LED element 210 side) at fin 430 becomes big, diminishes in the front of fin 430.Therefore, in the present embodiment, due to the surface area B (m of fin 4302) diminish at the base end side (LED element 210 side) of fin 430, become big in the front of fin 430, be therefore formed as the structure impartial in X-direction each position for heat flow Q2 of fin 430.That is, constituted in the way of radiating fin 440 becomes larger along X-direction.
So, in the present embodiment, it is configured to: below base 410,414b tilts by specified angle relative to X-direction, radiating fin 440 becomes larger along X-direction, and, thus, the heat Q1 being formed through base 410 is dispersed along X-direction, and the heat flow Q2 of fin 430 is along the homodisperse structure of X-direction.
It is above in conjunction with the made explanation of present embodiment, but the present invention is not limited to above-mentioned composition, can carry out various deformation in the technical thought range of the present invention.Such as, the light irradiation device 1 of present embodiment, although be the device of irradiating ultraviolet light, but it is equally applicable the present invention on the device of irradiation light visible ray, infrared lights such as () such as white lights irradiating other wavelength region.
In addition, each LED element 210 of present embodiment, have although possessing: be provided with multiple LED chips of generally square light-emitting area, but it is not limited to this structure, such as, the LED chip of LED element 20, it is also possible to possess the light-emitting area beyond square, additionally, LED element 20 can also be the element of the LED chip possessing more than 1.
In addition, in the present embodiment, below base 410,414b is illustrated for the face of abutting directly on the bearing surface 434a of fin 430, such as, high-termal conductivity graphite flake can also be set between the bearing surface 434a of 414b and fin 430 below base 410, or coating silicone grease, further improves both close property.
Additionally, in the present embodiment, base 410 and fin 430, to be illustrated as independent component, but base 410 and fin 430 can also be integrally formed.Additionally, in this case, it is also possible to below base 410 on 414b, directly form the radiating fin 440 being made up of copper or aluminum.
In addition, the radiating component 400 of present embodiment, rear is extended (namely along X-direction, X-direction minus side), in order to do not highlight Y direction and Z-direction and constitute, but, it is not limited to such structure, radiating component 400 extend direction, it is also possible to for arbitrary assigned direction (such as, Y direction or Z-direction).Further, in this case, although fin 430 also extends assigned direction, but housing 100 can also be set, in order to adopt housing 100 and fin 430 to form wind-tunnel (that is, covering fin 430).
In addition, in the present embodiment, although through the heat Q1 of the base 410 and heat flow Q2 of fin 430 along the homodisperse structure of X-direction, if but 414b tilts relative to X-direction below base 410, and radiating fin 440 becomes big along X-direction, then can form the radiating component 400 with high efficiency and heat radiation effect, therefore not be not limited to this structure.In addition, the heat-conduction part 414 of present embodiment, the ratio of the cross-sectional area of each cross section when often cutting off 10mm along X-direction, sequentially constituted with 1.00,0.85,0.72,0.61,0.52,0.44,0.38,0.32 from the side near substrate support 412, but be not limited to this structure.
Additionally, in the present embodiment, due to the surface area B (m of fin 4302) diminish at the base end side (LED element 210 side) of fin 430, become greatly (namely in the front of fin 430, owing to radiating fin 440 becomes larger along X-direction), therefore in X-direction, everybody is set to impartial composition to the heat flow Q2 of fin 430, but is not limited to this structure.Such as, when produced by all of LED element 210, heat Q1 (W) is less, it is also possible to form the radiating fin 440 of same size through front from the base end side of fin 430.Additionally, in this case, below base 410,414b side is without expanding radiating fin 440 requisite space, makes the relative X-direction of 414b below base plate 410 tilt so also without necessity.Therefore, such as, as shown in Figure 8, can also be configured to, 414b below base 410 is replaced to the above 414a of base 410, the relative X-direction in above 414a side making base 410 tilts, and from 414b distance to the front end of radiating fin 440 below base 410, becomes approximately fixed in the X-axis direction.Additionally, consider from the angle of heat conveying capacity, the base end part side (substrate-side) of heat-conduction part 414 can be slightly thicker than leading section side, for instance, it is also possible to for the structure of the above 414a X-direction inclination relative to following 414b of base 410.
It addition, embodiment of disclosure, it is made that illustration in every respect, it should be appreciated that the present invention is not limited only to described embodiment.The scope of the present invention is not limited to described above, and it is intended to the intention comprising according to claims and Claims scope is impartial and all deformation included within the scope of it.
Claims (14)
1. a light irradiation device, on shadow surface, upwardly extends the 1st side, and on the 2nd direction orthogonal thereto with described 1st direction, irradiates and have the linear light specifying live width；
It is characterized in that,
It possesses:
Substrate, it is almost parallel with described 1st direction and described 2nd direction；
Multiple LED light sources, it is arranged in each appointed interval along described 1st direction on the surface of described substrate, penetrates light on the 3rd direction orthogonal thereto with described 1st direction and described 2nd direction；
Radiating component, it is extended out to assigned direction and to the base of the tabular that heat produced by described LED light source is diffused and be vertically located at the one side of described base and have the fin of the multiple fins being arranged on described assigned direction and form by the back side from described substrate, and described base and fin all offer through hole；
LED drive circuit, it is arranged on the another side of described base, drives the plurality of LED light source；
Housing, while it receives described radiating component and described LED drive circuit, and it is formed with air current flow space, air current flow space includes the wind-tunnel surrounding the plurality of fin, connected, by the through hole on described base, the airway formed with the through hole on fin, and surround the space of described LED drive circuit；
Cooling fan, directs outside air into described wind-tunnel, described airway and described space, and produces the air-flow of described assigned direction in described wind-tunnel, described airway and space.
2. light irradiation device according to claim 1, it is characterised in that
Described through hole is in the position of the described substrate close to described base, along the described 1st multiple formation in direction.
3. light irradiation device according to claim 1 and 2, it is characterised in that
At least arbitrarily one side in the one side of described base and another side, relatively described assigned direction tilts,
Be perpendicular to the cross-sectional area of the cross section of the described assigned direction of described base, along with from described substrate along described assigned direction away from and reduce.
4. light irradiation device according to claim 3, it is characterised in that
The one side of described base, tilts relative to described assigned direction,
Described fin, along with the minimizing of the described cross-sectional area of described base, and becomes big along described assigned direction.
5. light irradiation device according to claim 4, it is characterised in that
The heat dissipation capacity shed by described base and described fin, is about fixing along described assigned direction.
6. the light irradiation device according to claim 4 or 5, it is characterised in that
The another side of described base, for being parallel to the plane in described 1st direction and described assigned direction, from this plane to the distance of described fin front end, is about fixing on described assigned direction.
7. light irradiation device according to claim 3, it is characterised in that
The another side of described base, tilts relative to described assigned direction,
The one side of described base, for being parallel to the plane in described 1st direction and described assigned direction, from this plane to the distance of described fin front end, is about fixing on described assigned direction.
8. the light irradiation device according to any one in claim 1～7, it is characterised in that
Described fin, is divided into multiple on described assigned direction and is formed.
9. the light irradiation device according to any one in claim 1～8, it is characterised in that
Described assigned direction, for described 3rd direction in opposite direction.
10. the light irradiation device according to any one in claim 1～9, it is characterised in that
The thermal conductivity of described base is higher than the thermal conductivity of described fin.
11. light irradiation device according to claim 10, it is characterised in that
Described base is made of copper, and described fin is made of aluminum.
12. the light irradiation device according to any one in claim 1～11, it is characterised in that
Being also equipped with high heat-conducting plate, it is clipped between described base and described fin, is conducted to described fin by the heat of described base.
13. the light irradiation device according to any one in claim 1～12, it is characterised in that
Described each LED light source, has multiple LED element.
14. the light irradiation device according to any one in claim 1～13, it is characterised in that
Described light is the light comprising the wavelength acting on ultraviolet curable resin.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPJP2014-077872 | 2014-04-04 | ||
| JP2014077872 | 2014-04-04 | ||
| CN201510157968.XA CN104972742B (en) | 2014-04-04 | 2015-04-03 | Light irradiation device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510157968.XA Division CN104972742B (en) | 2014-04-04 | 2015-04-03 | Light irradiation device |
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| CN105799340A true CN105799340A (en) | 2016-07-27 |
| CN105799340B CN105799340B (en) | 2018-08-10 |
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| CN201610134223.6A Expired - Fee Related CN105799340B (en) | 2014-04-04 | 2015-04-03 | Light irradiation device |
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| Country | Link |
|---|---|
| JP (2) | JP6069382B2 (en) |
| KR (2) | KR101959550B1 (en) |
| CN (1) | CN105799340B (en) |
| TW (2) | TWI664372B (en) |
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| CN108628127A (en) * | 2017-03-22 | 2018-10-09 | 柯尼卡美能达株式会社 | Optical writing device and image forming apparatus |
| CN114144313A (en) * | 2019-06-13 | 2022-03-04 | Hoya株式会社 | Light source device |
| CN114929484A (en) * | 2019-10-11 | 2022-08-19 | Hoya株式会社 | Light irradiation device |
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| JP6651765B2 (en) * | 2015-09-24 | 2020-02-19 | 東芝ライテック株式会社 | UV irradiation module and UV irradiation device |
| JP6294898B2 (en) | 2016-01-15 | 2018-03-14 | Ｈｏｙａ Ｃａｎｄｅｏ Ｏｐｔｒｏｎｉｃｓ株式会社 | Light irradiation device |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101959550B1 (en) | 2019-07-04 |
| KR20160031482A (en) | 2016-03-22 |
| TWI664372B (en) | 2019-07-01 |
| JP6069382B2 (en) | 2017-02-01 |
| KR101793969B1 (en) | 2017-11-06 |
| JP6006379B2 (en) | 2016-10-12 |
| JP2015201427A (en) | 2015-11-12 |
| TW201623864A (en) | 2016-07-01 |
| KR20150115672A (en) | 2015-10-14 |
| CN105799340B (en) | 2018-08-10 |
| JP2015199362A (en) | 2015-11-12 |
| TW201542959A (en) | 2015-11-16 |
| TWI598534B (en) | 2017-09-11 |
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