CN104806991A - Light irradiation device - Google Patents

Light irradiation device Download PDF

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Publication number
CN104806991A
CN104806991A CN201510139732.3A CN201510139732A CN104806991A CN 104806991 A CN104806991 A CN 104806991A CN 201510139732 A CN201510139732 A CN 201510139732A CN 104806991 A CN104806991 A CN 104806991A
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CN
China
Prior art keywords
light
light irradiation
irradiation device
radiator
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510139732.3A
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Chinese (zh)
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CN104806991B (en
Inventor
小林纪雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoya Candeo Optronics Corp
Original Assignee
Hoya Candeo Optronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of CN104806991A publication Critical patent/CN104806991A/en
Application granted granted Critical
Publication of CN104806991B publication Critical patent/CN104806991B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00Gas-tight or water-tight arrangements
    • F21V31/04Provision of filling media

Abstract

The objective of the invention lies in providing the light irradiation device. The device employs a sealing housing to cover the whole structure of the device, and the interior of the device does not cause moisture condensation. The device comprises a light source module which irradiates an object, and is provided with a substrate and a light-emitting element on the surface of the substrate; a heat radiator which is in butting connection with the back surface of the substrate, wherein the interior of the heat radiator is provided with a flow path for the flowing of a refrigerating fluid; a sealing housing which is used for sealing the light source and the heat radiator; and a humidity adjustment part which is used for adjusting the internal humidity of the sealing housing and disposed on the heat radiator.

Description

Light irradiation device
Technical field
The present invention relates to a kind of light irradiation device, it has light source in seal casinghousing, and irradiates light to irradiation object.
Background technology
In the past, the ink as sheet-fed offset printing uses the ultraviolet ray hardening type ink hardened by UV-irradiation.In addition, the sealant as FPD (FlatPanel Display) such as liquid crystal panel or organic EL (Electro Luminescence) panels uses ultraviolet hardening resin.For the sclerosis of this ultraviolet ray hardening type ink or ultraviolet hardening resin, usually, use the UV curing apparatus of irradiating ultraviolet light, particularly in the purposes of sheet-fed offset printing and FPD, because needing the ultraviolet of the rectangular illumination area illumination high exposure intensity to wide cut, so use multiple light-emitting component side by side on substrate and by its light irradiation device of configuring corresponding to irradiation area.
In the light irradiation device of a large amount of light-emitting component of this use, the heating of light-emitting component can cause temperature to rise, and then the problem that the luminous efficiency producing light-emitting component obviously reduces.Therefore, adopt following structure: the thermal components such as radiator are set in the mode closely sealed with substrate, and force to carry out forced cooling (such as, patent document 1) to the heat that light-emitting component produces by cold-producing mediums such as the cooling waters that flows through in the stream in radiator.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2008-288456 publication
According to the light irradiation device of patent document 1, because thermal component (heat abstractor) absorbs the heat of light-emitting component (LED chip) to dispel the heat, so effectively can cool light-emitting component from substrate.This thermal component, from the angle of thermal diffusivity and maintenance, preferably makes it be exposed to outside, so in the light irradiation device of patent document 1, adopts light-emitting component and substrate to be all exposed to the structure of outside.But be exposed on the external if light-emitting component exposes to the sun, then according to environment for use, can, by pollutions such as moisture, fog, dusts, cause exposure intensity to reduce, the worst situation there is the problem causing light-emitting component short circuit.
For solving relevant issues, though consider the structure covering light irradiation device entirety with seal casinghousing, if but this structure, pass through thermal component, air in seal casinghousing is cooled, and produces the temperature difference, therefore in the inside of seal casinghousing with outside, condensation is produced in seal casinghousing inside, and the problem that the injection window producing injection light fogs.In addition, if seal casinghousing inside produces condensation, the humidity of seal casinghousing inside is made to increase, then towards the circuit pattern formed on substrate metal (such as, copper) moisture absorption accelerate, the generation of speeding-up ion migration, thus, also to there will be between circuit pattern the problem of (namely between the anode of light-emitting component and negative electrode) easy short circuit.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of adopt seal casinghousing to cover light irradiation device entirety structure and do not produce the light irradiation device of condensation in inside.
For achieving the above object, light irradiation device of the present invention comprises: to the light source module irradiating object injection light, and it has substrate and the light-emitting component on surface being installed in substrate; Radiator, it docks with substrate back and arranges, and its inside has the stream that cold-producing medium flows through; For the seal casinghousing of seal light source module and radiator; Be used for regulating the humidity regulation parts of seal casinghousing humidity, its configuration on a heat sink.
According to this structure, suitably adjusted the humidity of seal casinghousing inside by humidity regulation parts, therefore, it is possible to positively prevent from producing condensation in seal casinghousing inside.
In addition, preferably, when the humidity of humidity regulation parts in seal casinghousing exceedes setting, the moisture in absorbed air, and time below setting, adsorbed moisture is released in air.In addition, in this case, preferably, humidity regulation parts comprise mesoporous silica.
In addition, the preferred a kind of sheet component of humidity regulation parts.In addition, in this case, humidity regulation parts are arranged in the mode of surrounding radiator.
In addition, cold-producing medium preferred water, or ethylene glycol, or propane diols, or ethylene glycol, the mixture of any one or two kinds and water in propane diols.
In addition, possess multiple light source module, preferably, multiple light source module is at least arranged into row in the prescribed direction.
In addition, light-emitting component preferably sends the light of the wavelength acting on ultraviolet hardening resin.
Effect of the present invention: as mentioned above, according to the present invention, can realize adopting seal casinghousing to cover the structure of light irradiation device entirety, and can not produce the light irradiation device of condensation in inside.
Accompanying drawing explanation
Fig. 1 is the front view of the light irradiation device relating to embodiments of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the enlarged front view of the light irradiation unit being equipped on the light irradiation device relating to embodiments of the present invention.
Fig. 4 is the rearview of the light irradiation unit being equipped on the light irradiation device relating to embodiments of the present invention.
Fig. 5 is the top view of the light irradiation unit being equipped on the light irradiation device relating to embodiments of the present invention.
In figure:
1 light irradiation device
100 light irradiation units
110 light source modules
115 ceramic substrates
120 chips
125 battery lead plates
131,132 terminal boards
The end face of 131a terminal board 131
The bottom surface of 132a terminal board 132
135,136 electrode terminals
135a, 136a anode terminal
135b, 136b cathode terminal
150 radiators
The front of 150a radiator 150
The back side of 150b radiator 150
160 streams
170 supply ports
175 outlets
200 seal casinghousings
210 enclosure body portions
210a opening
220 window portions
300 humidity regulation sheets.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described in detail.In addition, identical mark is added for part identical or suitable in figure, and not repeat specification.
Fig. 1 is the front view of the light irradiation device relating to embodiments of the present invention.Fig. 2 is the A-A profile of Fig. 1.The light irradiation device 1 of present embodiment is a kind of device being equipped on light supply apparatus, be used in sheet-fed offset printing as the ultraviolet ray hardening type ink of ink and in FPD (Flat Panel Display) etc. as the sclerosis of the ultraviolet hardening resin of sealant, and correspondingly with not shown irradiation object thing to arrange, to the regulation region injection wire ultraviolet light irradiating object.
As shown in Figures 1 and 2, the light irradiation unit 100 that light irradiation device 1 penetrates ultraviolet light by wire is formed with the seal casinghousing 200 of storage light irradiation unit 100.Below, in this manual, long limit (line length) direction penetrating wire ultraviolet light from light irradiation device 1 is set to X-direction, short side direction (i.e. the above-below direction of Fig. 1) is set to Y direction, the direction vertical with X-axis and Y-axis is set to Z-direction and is illustrated.
As shown in Figure 2, seal casinghousing 200 has the aluminium casing body 210 of opening 210a by front, forms with the glass window portion 220 being embedded in opening 210a, and receives light irradiation unit 100 hermetically.
As shown in Figure 1, light irradiation unit 100 possesses 32 light source modules 110, pair of terminal platform 131,132, radiator 150, humidity regulation sheet 300 etc.Wherein, each light source module 110 is the rectangular element of injection ultraviolet light, be configured in the present embodiment: the mode arranging the dense arrangement of (Y direction) with 16 (X-direction) × 2 is configured on radiator 150, and then penetrate the wire ultraviolet light parallel with X-direction from light irradiation device 1.
Fig. 3, Fig. 4 and Fig. 5 are the figure of the light irradiation unit 100 that present embodiment is described.Fig. 3 is the enlarged front view of light irradiation unit 100, and it amplifies display 2 × 2 row light source module 110.In addition, Fig. 4 is the rearview of light irradiation unit 100, and Fig. 5 is the top view of light irradiation unit 100.In addition, in Fig. 3 ~ Fig. 5, for convenience of description, seal casinghousing 200 is omitted.
Radiator 150 is while fixing each light source module 110, the parts that the heat produced each light source module 110 is dispelled the heat, and the metals such as the copper high by pyroconductivity are formed.As shown in Fig. 2, Fig. 4 and Fig. 5, radiator 150 is the square column parts extended in the X-axis direction, and the installed surface that the front 150a (Fig. 3) of radiator 150 is light source module 110.In addition, as shown in Figure 2, terminal board 131 and 132 is arranged on end face and the bottom surface of radiator 150 respectively by multiple fixed screw (not shown).
The radiator 150 of present embodiment, as shown in Figure 2, for the so-called water-cooling type radiator of one, there is the stream 160 making flow of refrigerant in inside, be provided with the supply port 170 for the supply system cryogen and the outlet 175 for discharging refrigerant in the 150b side, the back side of radiator 150.In addition, the back side 150b of radiator 150 is pasted with humidity regulation sheet 300, detailed content describes to some extent in back segment.In addition, as cold-producing medium, water or anti-icing fluid (such as, ethylene glycol or propane diols can be used, or ethylene glycol, the mixture of any one or two kinds and water in propane diols), the material being added with the anticorrisive agent such as sodium molybdate hydrate or carbon mixing water can be used in anti-icing fluid.
As shown in Figure 3, terminal board 131 is resin-made plate-shaped member, and it is along X-direction, supports the multipair electrode terminal 135 be made up of anode terminal 135a and cathode terminal 135b.Pair of electrodes terminal 135 (i.e. anode terminal 135a and cathode terminal 135b) is the terminal supplying power to each light source module 110, is connected with the battery lead plate 125 of each light source module 110.In present embodiment, in order to electric power supply is configured in 16 light source modules 110 of terminal board 131 side (i.e. the top surface side of radiator 150), and 16 anode terminal 135a and 16 cathode terminal 135b is set alternately along X-direction.In addition, the end face 131a of terminal board 131 is pasted with humidity regulation sheet 300, detailed content describes to some extent at back segment.
Terminal board 132 and terminal board 131 are similarly resin-made plate-shaped member, and it is along X-direction, supports the multipair electrode terminal 136 be made up of anode terminal 136a and cathode terminal 136b.Pair of electrodes terminal 136 (i.e. anode terminal 136a and cathode terminal 136b) is the terminal supplying power to each light source module 110, is connected with the battery lead plate 125 of each light source module 110.In the present embodiment, in order to electric power supply is configured in 16 light source modules 110 of terminal board 132 side (i.e. the bottom surface side of radiator 150), 16 anode terminal 136a and 16 cathode terminal 136b is alternatively set along X-direction.In addition, the bottom surface 132a of terminal board 132 is pasted with humidity regulation sheet 300, detailed content describes to some extent at back segment.
As shown in Figure 3, each light source module 110 possesses: rectangular ceramic substrate 115, and it formed by the aluminium nitride that pyroconductivity is high; Multiple LED (Light Emitting Diode) chip 120, it is welded on chip on ceramic substrate 115 and is configured to square trellis; A pair rectangular electrode plate 125, it waits (such as to weld, electric conductivity sticker (elargol), brazing material, welding, deposition, diffusion bond etc.) mode, be electrically connected with the anode pattern (not shown) on ceramic substrate 115 and cathode pattern (not shown) respectively.
Battery lead plate 125 is plate-shaped member, and formed by copper alloys such as copper or brass, phosphor-copper, beryllium coppers, it has high conductivity and flexibility.As mentioned above, the leading section of battery lead plate 125 is near the end of the side on ceramic substrate 115 surface, be electrically connected by the modes such as welding and anode pattern or cathode pattern, base end part, be drawn out in the mode protruding outside at ceramic substrate 115, be electrically connected with anode terminal 135a (or 136a) or cathode terminal 135b (or 136b).
Each light source module 110 configures 20 LED chip 120 in the X-axis direction, configure 11 LED chip 120 in the Y-axis direction, and the surface of ceramic substrate 115 is arranged in square trellis, the direction (i.e. Z-direction) that its optical axis direction is vertical with ceramic substrate 115 surface is consistent.The anode terminal (not shown) of each LED chip 120 and cathode terminal (not shown) are electrically connected with anode pattern and cathode pattern respectively by not shown closing line.And, if supply drive current (i.e. anode current) to the battery lead plate 125 be connected with anode pattern, then drive current can flow through all LED chip 120 that each light source module 110 carries, and from each LED chip 120 quantity of light emission ultraviolet light corresponding with drive current.In addition, each LED chip 120 of present embodiment, has roughly equal electrical characteristics, and constructs in the exposure intensity of the ultraviolet light penetrated from each LED chip 120 roughly the same mode that distributes.What flow through each LED chip 120 drives current through cathode pattern, and return current (i.e. cathode current) then returns from the battery lead plate 125 be connected with cathode pattern.
So, drive a current through all LED chip 120 that each light source module 110 carries, and penetrate ultraviolet light from each LED chip 120 if make, then LED chip 120 temperature can rise because of self-heating, and then the problem that generation luminous efficiency obviously reduces.Therefore, in present embodiment, radiator 150 is arranged on each light source module 110 in the mode of contiguity, forced cooling is carried out to the heat that LED chip 120 produces.
But, in present embodiment, as shown in Figures 1 and 2, cover light irradiation unit 100, so can the temperature difference be produced in the inside of seal casinghousing 200 and outside by seal casinghousing 200 air-tightness.Then, if in the inside and outside generation temperature difference of seal casinghousing 200, then condensation can be produced in the inside of seal casinghousing 200, and then the problem that the window portion 220 producing injection ultraviolet light fogs.So for addressing this problem, the light irradiation device of present embodiment arranges humidity regulation sheet 300 in the inside of seal casinghousing 200.
Humidity regulation sheet 300 is the sheet component containing mesoporous silica (mesoporous silica), such as, Japan change into name of product manufactured by limited company " " (registration mark).Mesoporous silica with silica (silica) for material, have evenly and the aperture of rule (mesopore), it is a kind of material with high-hygroscopicity, and the humidity regulation sheet 300 containing mesoporous silica has the adsorb water vapor when humidity exceedes setting, and time below setting, discharge the characteristic (delayed (Hysteresis) characteristic) of steam.Therefore, if be configured in seal casinghousing 200, then the humidity in seal casinghousing 200 suitably can be regulated.In addition, in the light irradiation device 1 of present embodiment, become minimum in the temperature on seal casinghousing 200 inner radiator 150 surface, cause radiator 150 the most easily to condense, so humidity regulation sheet 300 will be attached at the back side 150b (Fig. 4) of radiator 150.In addition, from the viewpoint of humidity regulation, preferably, the area of humidity regulation sheet 300 is the bigger the better as far as possible.Therefore, in the present embodiment, to surround the mode around radiator 150, humidity regulation sheet 300 is also pasted with at the end face 131a of the terminal board 131 adjacent with the radiator 150 and bottom surface 132a of terminal board 132.
So, the light irradiation device 1 of present embodiment, because arranging humidity regulation sheet 300 in seal casinghousing 200 inside, even if so adopt seal casinghousing 200 to cover the structure of light irradiation unit 100 (i.e. light source module 110 and radiator 150), the humidity of seal casinghousing 200 inside also suitably can be regulated.Therefore, can positively cool each light source module 110 on the one hand, prevent at seal casinghousing 200 internal condensation on the other hand.In addition, because the humidity of seal casinghousing 200 inside is controlled, so there is not the situation that the pattern accelerated on ceramic substrate 115 produces Ion transfer yet.
Though be description of the present embodiment above, the present invention is not limited to above-mentioned structure, various distortion can be carried out in the scope of technological thought of the present invention.
Such as, in the present embodiment, being that the mode surrounding radiator 150 configures humidity regulation sheet 300, but being not limited to above-mentioned structure, such as, in order to increase the area of humidity regulation sheet 300, suitably can be configured in the inner face of seal casinghousing 200.
In addition, though the humidity regulation sheet 300 of present embodiment is the sheet component containing mesoporous silica, other absorbent-type hygroscopic agents can also be used.The absorbent-type hygroscopic agent that humidity regulation sheet 300 uses, at least containing a kind of silicide, such as following material: the composite metal oxide etc. of silica, zeolite, mesoporous glass, apatite, diatomite, kaolinite, sepiolite, diamond stone, allophane, atlapulgite, silica-alumina composite oxides, silica-titania composite oxide, silica-zirconium oxide, silica-magnesia, silica-zirconia lanthanum, silica-zirconia barium, silica-zirconia strontium etc.
In addition, in present embodiment, though quote Japan change into name of product manufactured by limited company " " (registration mark) as the example of humidity regulation sheet 300, but also can apply the like product with hysteresis characteristic.
In addition, in embodiment of disclosure, all viewpoints are all example, should not be considered to for restriction the present invention, scope of the present invention is not only above-mentioned explanation, be more included in scope represented by claims and with all distortion in the impartial meaning of right and scope.

Claims (8)

1. a light irradiation device, comprising:
To the light source module irradiating object injection light, it has substrate and the light-emitting component on surface being installed in described substrate;
Radiator, it docks with described substrate back and arranges, and its inside has the stream that cold-producing medium flows through;
For the seal casinghousing of seal light source module and radiator;
Be used for regulating the humidity regulation parts of the humidity in described seal casinghousing, it is configured on described radiator.
2. light irradiation device according to claim 1, is characterized in that: described humidity regulation parts, and when the humidity in described seal casinghousing exceedes setting, the moisture in absorbed air, time below setting, is released into adsorbed moisture in air.
3. light irradiation device according to claim 2, is characterized in that: described humidity regulation parts comprise mesoporous silica.
4. the light irradiation device according to any one of claims 1 to 3, is characterized in that: described humidity regulation parts are sheet component.
5. light irradiation device according to claim 4, is characterized in that: described humidity regulation parts, arranges in the mode of surrounding described radiator.
6. the light irradiation device according to any one of claims 1 to 3, is characterized in that: described cold-producing medium is water, or ethylene glycol, or propane diols, or ethylene glycol, the mixture of any one or two kinds and water in propane diols.
7. the light irradiation device according to any one of claims 1 to 3, is characterized in that: comprise multiple light source module, and described light source module is at least arranged into row in the prescribed direction.
8. the light irradiation device according to any one of claims 1 to 3, is characterized in that: described light-emitting component sends the light of the wavelength acting on ultraviolet hardening resin.
CN201510139732.3A 2014-04-08 2015-03-27 Light irradiation device Expired - Fee Related CN104806991B (en)

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JP2014079227A JP6067612B2 (en) 2014-04-08 2014-04-08 Light irradiation device
JP2014-079227 2014-04-08

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CN104806991B CN104806991B (en) 2020-04-14

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Publication number Priority date Publication date Assignee Title
CN111605324A (en) * 2019-02-23 2020-09-01 豪雅冠得股份有限公司 Light irradiation device

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JP6067612B2 (en) * 2014-04-08 2017-01-25 Hoya Candeo Optronics株式会社 Light irradiation device

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CN111605324B (en) * 2019-02-23 2022-09-20 Hoya株式会社 Light irradiation device

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KR20150116780A (en) 2015-10-16
KR102097736B1 (en) 2020-04-07
TWI644591B (en) 2018-12-11
CN204534498U (en) 2015-08-05
JP6067612B2 (en) 2017-01-25
TW201540123A (en) 2015-10-16
JP2015201329A (en) 2015-11-12
CN104806991B (en) 2020-04-14

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