CN105268613A - Light irradiation device - Google Patents
Light irradiation device Download PDFInfo
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- CN105268613A CN105268613A CN201510419563.9A CN201510419563A CN105268613A CN 105268613 A CN105268613 A CN 105268613A CN 201510419563 A CN201510419563 A CN 201510419563A CN 105268613 A CN105268613 A CN 105268613A
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- light irradiation
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- irradiation device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention provides a light irradiation device of simple configuration and capable of irradiating the linear light of the substantially uniform illumination. The device irradiates the light on an irradiation surface in a first direction and the linear light on a second direction orthogonal to the first direction. The device comprises a plurality of light irradiation units respectively provided with a substrate aligned with an optical axis in a third direction orthogonal to the first direction and the second direction, a plurality of light sources arranged at predetermined intervals on the surface of the substrate along the first direction, a flow path internally formed with a refrigerant that flows along the first direction, and a radiator that abuts against the back surface of the substrate. The plurality of light irradiation units are composed of N first irradiation units with the refrigerant that flows along the first direction, and N/N+1 second irradiation units with the refrigerant that flows along a direction opposite to the first direction.
Description
Technical field
The present invention relates to a kind of light irradiation device irradiating linear light, particularly relate to a kind of light irradiation device possessing multiple light irradiation unit, wherein, light irradiation unit is configured with multiple light source linearly.
Background technology
In the past, as single-sheet stationery offset printing ink, use the ultraviolet ray hardening type ink hardened by UV-irradiation.In addition, as the sticker of FPD (FlatPanelDisplay) peripheries such as liquid crystal panel and organic EL (ElectroLuminescence) panel, ultraviolet hardening resin is used.In the sclerosis of this ultraviolet ray hardening type ink and ultraviolet hardening resin, the UV curing apparatus of usual employing irradiating ultraviolet light, especially, in single-sheet stationery offset printing and FPD purposes, need the irradiation area irradiating wide cut, therefore use the ultraviolet lamp irradiating line-shaped illumination light.
As UV curing apparatus in the past it is well known that with the lamp-type irradiation unit as light source such as high-pressure mercury-vapor lamp and mercury hernia lamp, but in recent years, for the densification requirement reducing power consumption, long lifetime, plant bulk, develop a kind of discharge lamp replaced in the past, multiple LED (LingtEmittingDiode) linear array is equipped on 1 substrate or base station, and as the UV curing apparatus that light source uses.
But, if use LED as light source, because the major part of the electric power dropped into all changes into heat, so there is the problem of luminous efficiency and the service life reduction caused by the heat of LED self generation, the process of heat also becomes problem.Therefore, using LED as in the UV curing apparatus that light source uses, adopt the mandatory structure (such as, patent document 1) that the heat produced by LED is dispelled the heat.
UV curing apparatus (light source cell) described in patent document 1 possesses base station (printhead) and linear array and is configured at multiple LEDs on base station.Base station being formed with multiple stream for flowing through cooling water along the orientation of light emitting diode, in this stream, flowing through cooling water, therefore, it is possible to cool each LED.In addition, if along the orientation of light emitting diode, only flow through cooling water in one direction, then produce temperature difference between the upstream side of cooling water and downstream, between LED, also produce temperature difference, change in the exposure intensity of LED, therefore, in the UV curing apparatus described in patent document 1, in different both directions, flow through cooling water at 180 degree, the temperature difference between LED is reduced.
Prior art document
Patent document 1: Japanese Unexamined Patent Publication 2009-064987 publication
Summary of the invention
Invent problem to be solved:
As mentioned above, according to the structure of patent document 1,180 degree of cooling waters towards 2 directions of different (that is, temperature is different) flow in base station, therefore, can carry out heat exchange, the temperature of homogenising base station between the cooling water flow through in different directions.Therefore, the temperature of each LED is also roughly equal, can suppress the change of the exposure intensity caused by LED, can obtain the linear light of roughly uniform exposure intensity.
But, as the UV curing apparatus of patent document 1, on base station, multiple stream is formed as one, the temperature of homogenising base station is carried out (namely by the heat exchange of the cooling water flowing through each stream, the temperature of LED) structure when, in order to fully carry out the heat exchange of cooling water, need to adjoin each stream of configuration as much as possible.Therefore, there is the cross sectional area of each stream and bending radius etc. and be limited, the pressure loss of cooling water increases, and cannot obtain regulation flow, the problem that also cannot effectively cool.In addition, for forming multiple stream on base station, need accurate processing, also need to increase process time, therefore, cause cost to raise, this external large area base station, it is also extremely difficult that the inside of long limit base station or curved surface base station forms multiple stream.
The present invention is in view of the above circumstances, and object is to provide a kind of simple structure, can penetrate the light irradiation device of the linear light of roughly uniform exposure intensity.
Method for dealing with problems:
For reaching above-mentioned purpose, light irradiation device of the present invention extends on shadow surface for a kind of on the 1st direction, and the light irradiation device of the linear light with regulation live width is irradiated to the 2nd direction orthogonal with the 1st direction, it is characterized in that, possess: multiple light irradiation unit, each light irradiation unit has respectively: substrate, by optical axis on the 1st direction and 3rd direction orthogonal with the 2nd direction towards aliging, and the multiple light source be arranged along the 1st direction across predetermined distance on the surface of substrate and be formed with the stream that cold-producing medium flows along the 1st direction in inside, and with the radiator that the mode abutted with the back side of substrate is arranged, wherein, multiple light irradiation unit by N (N is natural number) individual 1st light irradiation unit flowed in 1st direction of cold-producing medium in stream and cold-producing medium in stream with the 1st side in the opposite direction on N or N+1 the 2nd light irradiation unit flowing form.
According to this structure, if the cold-producing medium flowed in the stream of the 1st light irradiation unit towards from the cold-producing medium flowed in the stream of the 2nd light irradiation unit towards there being 180 degree different, then on shadow surface, irradiate the ultraviolet light of 2 kinds of exposure intensities distributions.And on shadow surface, the ultraviolet light of 2 kinds of exposure intensity distributions is homogenized, so the linear light of roughly uniform exposure intensity can be obtained on the 1st direction.
In addition, preferably when observing from the 3rd direction, the 1st light irradiation unit and the 2nd light irradiation unit configure alternately along the 2nd direction.In addition, in this case, the 1st light irradiation unit preferably configured alternately along the 2nd direction and the stream of the 2nd light irradiation unit are connected in series with the configuration sequence in the 2nd direction.
In addition, 1st light irradiation unit and the 2nd light irradiation unit are configured in the light path of each light source respectively, and then the mode having to make the light from each light source become almost parallel light carries out multiple optical elements of shaping, when observing from the 1st direction, the 1st light irradiation unit and the 2nd light irradiation unit can be configured to be configured on the circular arc centered by regulation spot position in the mode of the regulation spot position optically focused of injection light on shadow surface from the 1st light irradiation unit and the injection of the 2nd light irradiation unit.
In addition, preferred light source is made up of more than at least 1 LED.
In addition, preferred light is the light comprising the wavelength acting on uv-hardening resin.
Invention effect:
As mentioned above, according to the present invention, a kind of employing can be realized and simply construct, the light irradiation device of the linear light of roughly uniform exposure intensity can be penetrated.
Accompanying drawing explanation
Fig. 1 is the top view of the light irradiation device relating to embodiments of the present invention when observing from Z-direction.
Fig. 2 is the front view of the light irradiation device relating to embodiments of the present invention when observing from Y direction.
Fig. 3 is the upward view of the light irradiation device relating to embodiments of the present invention when observing from Z-direction.
Fig. 4 is the side view of the light irradiation device of Fig. 1 ~ Fig. 3.
Fig. 5 is the plane of LED module of the embodiments of the present invention of observing from Y direction.
Fig. 6 is the side view of LED module of the embodiments of the present invention of observing from X-direction.
Fig. 7 is the front view of LED module of the embodiments of the present invention of observing from Y direction.
Fig. 8 is the figure of the A portion enlarged drawing of Fig. 2, the structure of the radiator that the LED module which illustrating the light irradiation device relating to embodiments of the present invention possesses.
Fig. 9 be Fig. 8 along B-B to sectional view.
The cold-producing medium of flowing in each radiator of the 1st light irradiation unit that the light irradiation device that Figure 10 relates to embodiments of the present invention for explanation possesses and the 2nd light irradiation unit towards ideograph.
Figure 11 be from relate to embodiments of the present invention light irradiation device injection linear ultraviolet light X-direction exposure intensity distribution.
The schematic diagram of the 1st variation of the radiator that the LED module that Figure 12 relates to the light irradiation device of embodiments of the present invention for explanation possesses.
The schematic diagram of radiator the 2nd variation that the LED module that Figure 13 relates to the light irradiation device of embodiments of the present invention for explanation possesses.
In figure:
1 light irradiation device
100a, 100b, 100c the 1st light irradiation unit
110 LED modules
111 substrates
113 LEDs
115 spherical lenses
117 lens rings
119 lens pressing plates
120,120A, 120B radiator
121,121A, 121B base station
123 refrigerant pipes
123a, 123aA, 123aB stream
125 connectors
200a, 200b the 2nd light irradiation unit
301 linking arms
401 conduits
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described in detail.Moreover, to part same or suitable in figure interpolation same symbol and in this not repeat specification.
Fig. 1 to Fig. 4 be illustrate relate to embodiments of the present invention the outside drawing of light irradiation device 1.The light irradiation device 1 of present embodiment is a kind of device being equipped on the light supply apparatus of the ultraviolet hardening resin that the ultraviolet ray hardening type ink and FPD etc. that make to use as single-sheet stationery offset printing ink use as sticker, as as described in follow-up, it is configured at the top of irradiation object thing, and penetrates linear ultraviolet light to irradiation object.In this manual, long limit (line length) direction of the linear ultraviolet light penetrated from light irradiation device 1 is set to X-direction (the 1st direction), minor face (live width) direction is set to Y direction (the 2nd direction), and the direction orthogonal with X-axis and Y-axis is set to Z-direction (the 3rd direction) and is illustrated.Fig. 1 is the top view of the light irradiation device 1 when observing from Z-direction, the front view of light irradiation device 1 of (observing to upside from the downside of Fig. 1) when Fig. 2 is for observing from Y direction, Fig. 3 is the upward view of the light irradiation device 1 of (observing to upside from the downside of Fig. 2) when observing from Z-direction.In addition, Fig. 4 is when observing from X-direction, the side view of the light irradiation device 1 of (observing to the right from the left side of Fig. 3).
As shown in Figures 1 to 4, light irradiation device 1 possesses 3 the 1st light irradiation units 100a, 100b, 100c; 2 the 2nd light irradiation units 200a, 200b; Connect 5 linking arms 301 of 3 the 1st light irradiation units 100a, 100b, 100c and 2 the 2nd light irradiation units 200a, 200b in the Y-axis direction, it is accommodated in not shown housing.1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b is the unit together penetrating parallel linear ultraviolet light in the X direction.As shown in Figure 1 and Figure 3, the 1st light irradiation unit 100a, 100b, 100c of present embodiment and the 2nd light irradiation unit 200a, 200b configures along Y direction alternately according to the order of the 1st light irradiation unit 100a, the 2nd light irradiation unit 200a, the 1st light irradiation unit 100b, the 2nd light irradiation unit 200b, the 1st light irradiation unit 100c, and is connected in series by resinous conduit 401 respectively.
In addition, as shown in Figure 4, when observing from X-direction, 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b is circular arc configuration, and the spot position F1 be configured to the datum level R that is configured at irradiation object thing from the ultraviolet light of each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, 200b injection intersects.And, when being configured to penetrate to the spot position F1 on datum level R from the ultraviolet light of the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b, irradiate the scope that the live width centered by spot position F1 is LW.
Next the structure of the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b is illustrated.As shown in FIG. 1 to 3, the 1st light irradiation unit 100a, 100b, 100c of present embodiment and the 2nd light irradiation unit 200a, 200b has the radiator 120 that 8 LED modules 110 of connecting along X-direction and 8 cool LED module 110 respectively.Moreover, the 1st light irradiation unit 100a, 100b, 100c of present embodiment is different from the direction of the cold-producing medium that the 2nd light irradiation unit 200a, 200b only flows in radiator 120, and other structures are all common, therefore, below representatively, the 1st light irradiation unit 100a is illustrated.
Fig. 5 ~ Fig. 7 is the figure of the structure that LED module 110 is described.Fig. 5 is the plane of LED module 110 of the present embodiment of observing from Y direction.In addition, Figure 36 is the side view of LED module 110 of the Fig. 5 observed from X-direction, and Fig. 7 is the front view of the LED module 110 of the Fig. 5 observed from Y direction.Moreover, in Fig. 5 ~ Fig. 7, for convenience of description, invisible structure (such as, LED 113, spherical lens 115 etc.) on accompanying drawing represented by dashed line.
As shown in Fig. 5 ~ Fig. 7, the LED module 110 of present embodiment possesses: the rectangular substrate 111 being parallel to X-direction and Y direction; Be configured at multiple LEDs (LightEmittingDiode) 113 (light source) of substrate 111; Be configured at multiple spherical lenses 115 and the lens ring 117 of the light path of each LED 113; With the lens pressing plate 119 supporting spherical lens 115 and lens ring 117.
Substrate 111 is the rectangular circuit board formed by the material (such as, aluminium nitride) that pyroconductivity is high, carries 10 LEDs 113 on its surface along X-direction across predetermined distance.In addition, on substrate 111, be formed with the anode pattern (not shown) for powering to each LED 113 and cathode pattern (not shown), each LED 113 is welded in anode pattern and cathode pattern respectively, and is electrically connected.Anode pattern and cathode pattern and not shown LED drive circuit are electrically connected, by drive current from LED drive circuit of anode pattern and cathode pattern supply on each LED 113.
LED 113 for having the LED chip (not shown) of roughly square light-emitting area, and accepts the drive current from LED drive circuit, and injection wavelength is the semiconductor element of the ultraviolet light of 385nm.If supply drive current to each LED 113, then penetrate the ultraviolet light of the light quantity of corresponding drive current from each LED 113.And, the spherical lens 115 of the light path being configured at each LED 113 is injected from the ultraviolet light of each LED 113 injection.
The ultraviolet light penetrated by LED 113, for being accommodated in the circular glass lens of the bottom (end of LED 113 side) of lens pressing plate 119, is configured as the ultraviolet light of regulation extended corner by spherical lens 115.And, the lens ring 117 of the light path being configured at each LED 113 is injected equally by the ultraviolet light of each spherical lens 115.
Lens ring 117 is for being accommodated in the leading section of lens pressing plate 119 and looking the plano-convex glass lens of rectangle for plane, and it has different refracting powers in X-direction respectively from Y direction.Therefore, if the ultraviolet light through spherical lens 115 penetrated by LED 113 is by lens ring 117, then optically focused penetrating in X-direction and Y direction respectively.And, the ultraviolet light penetrated by each lens ring 117 overlaps with the ultraviolet light penetrated from adjacent lens ring 117 in the X-axis direction, penetrate from LED module 110 and a branch ofly to extend in the X-axis direction, and there is the linear ultraviolet light of regulation live width in the Y-axis direction.
As mentioned above, in the 1st light irradiation unit 100a of present embodiment, 8 LED modules 110 (Fig. 2, Fig. 3) are connected with along X-direction, therefore the linear ultraviolet light penetrated from each LED module 110 connects along X-direction, penetrates a branch of linear ultraviolet light also in the Y-axis direction along X-direction extension with regulation live width from the 1st light irradiation unit 100a.And, as mentioned above, in the present embodiment, 1st light irradiation unit 100b, 100c and the 2nd light irradiation unit 200a, 200b and the 1st light irradiation unit 100a has same configuration, is configured to optically focused (Fig. 4) on ultraviolet light from the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b spot position F1 on datum level R.
Fig. 8 and Fig. 9 is the figure of the structure of the radiator 120 that present embodiment is described.Fig. 8 is the A portion enlarged drawing of Fig. 2, and Fig. 9 is the profile of the radiator 120 along the cut-out of B-B line with Fig. 8.Moreover, in fig. 8, for convenience of description, invisible structure (such as, LED 113, spherical lens 115, refrigerant pipe 123 etc.) on accompanying drawing represented by dashed line.
As shown in FIG. 8 and 9, radiator 120 is that a kind of mode with the back side of the substrate 111 being close contact in LED module 110 (face contrary with carrying the face of LED 113) configures, and the so-called water-filled radiator of thermal release will produced by each LED 113.The radiator 120 of present embodiment by be close contact in substrate 111 the back side base station 121 be formed in internal flow and have the refrigerant pipe 123 of the stream 123a of cold-producing medium to form.If flow through drive current in each LED 113, ultraviolet is penetrated from each LED 113, then produce the temperature caused by the self-heating of LED 113 to rise, the significantly reduced problem of luminous efficiency, therefore, in the present embodiment, radiator 120 is set in the mode at the back side being close contact in substrate 111, by substrate by the heat conduction that generated by LED 113 to radiator 120, and forced cooling.Moreover, as the material of radiator 120, preferably use the alloy of aluminium alloy or copper alloy etc., or beyond metal, preferably use pottery (such as, aluminium nitride or silicon nitride) or resin (to be such as added with the PPS (PolyPhenyleneSulfide) of the heat fillings such as metal dust.
Base station 121 is the rectangular bars parts be made up of the material of the excellent heat conductivity such as aluminium or copper, and its top side (the mounting surface side of linking arm 301) is formed with groove portion 121a (Fig. 9) that the section receiving refrigerant pipe 123 is U-shaped.In addition, below base station 121, (face relative with the back side of substrate 111) installs by the sticker that such as heat radiation lubricating fat or thermal conductivity are high with the state being close contact in the back side of substrate 111.Thus conducted to rapidly base station 121 from the heat that LED 113 sends.
The cartridge of refrigerant pipe 123 to be the section of the stream 123a (through hole) being formed with flow system cryogen in inside the be metal (such as, copper, stainless steel) of circular.Refrigerant pipe 123 is accommodated in the groove portion 121a of base station 121, and the sticker high by such as heat radiation lubricating fat or thermal conductivity is installed with the state being close contact in base station 121.Thus the heat conducting to base station 121 is conducted to rapidly refrigerant pipe 123.As shown in Figure 1, Figure 2 and shown in Fig. 4, the connector 125 of connecting duct 401 is provided with at the X-direction two ends of refrigerant pipe 123, cold-producing medium, by being connected to the conduit 401 of the connector (125) of side and being supplied in stream 123a, is discharged by the conduit (401) being connected to the connector 125 of other sides.Moreover, as cold-producing medium, water or anti-icing fluid can be used (such as, the mixture of ethylene glycol, propane diols or these and water), in addition, in water or anti-icing fluid, the material being added with the anticorrosive such as sodium molybdate hydrate or carbon mixing water can be used.
As mentioned above, in the present embodiment, refrigerant pipe 123 and base station 121 touch, and the heat therefore conducting to base station 121 can promptly be conducted to refrigerant pipe 123.And, flowed in stream 123a by cold-producing medium, conduct to the thermal release of refrigerant pipe 123 in cold-producing medium.But, be a kind of cold-producing medium structure according to the flowing of direction in the stream 123a of refrigerant pipe 123 in present embodiment, therefore the upstream side of stream 123a (namely, the side of the supply system cryogen) the temperature of cold-producing medium low, downstream (namely, the side of discharging refrigerant) refrigerant temperature uprise, there is the problem of the thermograde producing X-direction in radiator 120.And if produce the thermograde of X-direction in radiator 120, then the temperature along each LED 113 of X-direction arrangement also dissimilates.In general, the exposure intensity of LED 113 has negative temperature characterisitic, therefore, if produce the thermograde of X-direction in radiator 120, then the exposure intensity of the upstream side (that is, the side of the supply system cryogen) of stream 123a uprises, and downstream (namely, the side of discharging refrigerant) exposure intensity step-down, produce intensity gradient.At this, in order to solve involved problem, present embodiment is configured to configure the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b alternately along Y direction, the cold-producing medium of flowing in the refrigerant pipe of the 1st light irradiation unit 100a, 100b, 100c 123 towards from the cold-producing medium flowed in the refrigerant pipe 123 of the 2nd light irradiation unit 200a, 200b towards there being 180 degree different.
Figure 10 be explanation the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b each refrigerant pipe 123 in flowing cold-producing medium towards ideograph.Moreover, in Fig. 10, for convenience of description, omit refrigerant pipe 123, with arrow represent the cold-producing medium of flowing in refrigerant pipe 123 towards.
As shown in Figure 10, in the present embodiment, the refrigerant pipe 123 of the 1st light irradiation unit 100a, the refrigerant pipe 123 of the 2nd light irradiation unit 200a, the refrigerant pipe 123 of the 1st light irradiation unit 100b, the refrigerant pipe 123 of the 2nd light irradiation unit 200b, the refrigerant pipe 123 of the 1st light irradiation unit 100c are connected in series by conduit 401.Thus, if from the conduit 401 the supply system cryogen of connector 125 of side (Figure 10 for left side) being connected to the 1st light irradiation unit 100a, then cold-producing medium flows to the positive side of X-direction in the refrigerant pipe 123 of the 1st light irradiation unit 100a, discharges from the conduit 401 of connector 125 of other sides (Figure 10 for right side) being connected to the 1st light irradiation unit 100a.And the cold-producing medium of discharging from the refrigerant pipe 123 of the 1st light irradiation unit 100a is supplied to the refrigerant pipe 123 of the 2nd light irradiation unit 200a, flows to the minus side of X-direction in the refrigerant pipe 123 of the 2nd light irradiation unit 200a.And, similarly, the cold-producing medium of discharging from the refrigerant pipe 123 of the 2nd light irradiation unit 200a flowing in the refrigerant pipe 123 of the refrigerant pipe 123 of the refrigerant pipe 123 of the 1st light irradiation unit 100b, the 2nd light irradiation unit 200b, the 1st light irradiation unit 100c, discharges from the conduit 401 of connector 125 of other sides (being right side Figure 10) being connected to the 1st light irradiation unit 100c.
As mentioned above, in the present embodiment, at the 1st light irradiation unit 100a, 100b, the radiator 120 of 100c (namely, refrigerant pipe 123) in flowing cold-producing medium towards with at the 2nd light irradiation unit 200a, in the radiator 120 of 200b, the cold-producing medium of flowing is towards the difference having 180 degree, cold-producing medium is at the refrigerant pipe 123 of the 1st light irradiation unit 100a, the refrigerant pipe 123 of the 2nd light irradiation unit 200a, the refrigerant pipe 123 of the 1st light irradiation unit 100b, the refrigerant pipe 123 of the 2nd light irradiation unit 200b, snakelike flowing in order in the refrigerant pipe 123 of the 1st light irradiation unit 100c.Thus the temperature of cold-producing medium slowly raises according to the order of the 1st light irradiation unit 100a, the 2nd light irradiation unit 200a, the 1st light irradiation unit 100b, the 2nd light irradiation unit 200b, the 1st light irradiation unit 100c.In addition, the temperature of the radiator 120 of the 1st light irradiation unit 100a, 100b, 100c in the positive side of X-direction (namely, right side in Figure 10) raise, on the other hand, the temperature of the radiator 120 of the 2nd light irradiation unit 200a, 200b raises at X-direction minus side (that is, the left side in Figure 10).Therefore, from the 1st light irradiation unit 100a, 100b, 100c injection ultraviolet light exposure intensity in the positive side of X-direction (namely, right side in Figure 10) reduce, reduce from the exposure intensity of the ultraviolet light of the 2nd light irradiation unit 200a, 200b injection at X-direction minus side (that is, the left side in Figure 10).At this, present embodiment is configured to by distributing difference (namely from this exposure intensity, intensity gradient is different) spot position F1 on datum level R of ultraviolet light and the ultraviolet light from the 2nd light irradiation unit 200a, 200b of the 1st light irradiation unit 100a, 100b, 100c on optically focused, (namely the difference that exposure intensity is distributed disappears, homogenising), the linear light of roughly uniform exposure intensity can be obtained on datum level R.
The linear ultraviolet lighting that the light irradiation device 1 of present embodiment penetrates is incident upon the exposure intensity distribution from X-direction when the irradiation object thing that the distance of 10mm configures of the not shown housing (light injection window) of light irradiation device 1 by Figure 11.The transverse axis of Figure 11 is the irradiation position (mm) when being 0 (mm) with long side direction (X-direction) center of the linear ultraviolet light penetrated from light irradiation device 1, and the longitudinal axis is the exposure intensity (mW/cm2) of the ultraviolet light on irradiation object thing.As shown in figure 11, known structure according to the present embodiment, can penetrate from light irradiation device 1 the linear ultraviolet light that length is approximately the roughly uniform exposure intensity of 1000mm in the X-axis direction.
Though be the explanation of the present embodiment above, the present invention is not limited to above-mentioned structure, various distortion can be carried out within the scope of technological thought of the present invention.
Such as, although each 1st light irradiation unit 100a, 100b, 100c of present embodiment and each 2nd light irradiation unit 200a, 200b to be had the LED module 110 of 10 LEDs 113 as connection 8, arrange the structure of 80 LEDs 113 along X-direction and be illustrated, but the quantity of LED 113 (that is, being equipped on the quantity of the LED 113 of LED module 110 and the quantity of LED module 110) suitably can increase and decrease according to required specification.In addition, each LED 113 can also as the structure therein with multiple LED chip (mould).
In addition, although the light irradiation device 1 of present embodiment is illustrated as the structure with 3 the 1st light irradiation units 100a, 100b, 100c and 2 the 2nd light irradiation units 200a, 200b, on datum level R, the difference of exposure intensity distribution is homogenized, preferably become much the same exposure intensity, 1st light irradiation unit and the 2nd light irradiation unit can be together made up of N number of (N is natural number) unit, in addition, also can be that wherein any one is made up of N number of unit, another one be made up of N+1 unit.Moreover, in this case, suitably N can be set according to the UV-irradiation intensity of necessity.
In addition, when observing from X-direction, although the 1st light irradiation unit 100a, 100b, 100c of present embodiment and the 2nd light irradiation unit 200a, 200b is circular arc configuration, be configured to intersect from the spot position F1 of ultraviolet light on datum level R of each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, 200b injection, but be not defined in this structure.Such as, time in the purposes that the ultraviolet ray hardening type that the light irradiation device 1 of present embodiment is used to make to use as single-sheet stationery offset printing ink is ink curing, relative to the irradiation object thing flowed along Y direction, preferably irradiate predetermined energy (namely, integration light quantity) ultraviolet light, therefore, from each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, the ultraviolet light of 200b injection not necessarily must irradiate in same position, such as, can be configured to from each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, the ultraviolet light of 200b injection injects the diverse location of Y direction respectively on irradiation object thing.According to this structure, different (namely from exposure intensity distribution, intensity gradient is different) though the 1st light irradiation unit 100a, 100b, 100c and the ultraviolet light of the 2nd light irradiation unit 200a, 200b be irradiated to diverse location on irradiation object thing, but irradiation object thing is relative to ultraviolet light relative movement, therefore, obtain roughly even as the integral light quantitative change in the X-direction of irradiation object thing.
In addition, although each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, 200b of present embodiment have multiple spherical lens 115 and lens ring 117, penetrate one article from each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, 200b to extend in the X-axis direction and the linear ultraviolet light in the Y-axis direction with regulation live width, and be illustrated, but do not really want to be defined in this structure.Such as, each 1st light irradiation unit 100a, 100b, 100c can be configured to and each 2nd light irradiation unit 200a, 200b does not have spherical lens 115 and lens ring 117, from the ultraviolet light of each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, 200b injection in the X-axis direction and in the Y-axis direction, to specify that extended corner is expanded.In this case, from each 1st light irradiation unit 100a, 100b, 100c and each 2nd light irradiation unit 200a, 200b injection ultraviolet light respectively overlap irradiation area in, by the ultraviolet light that the intensity gradient that overlaps in the X-axis direction is different, (namely the difference of exposure intensity distribution (intensity gradient) is disappeared, homogenising), the area-shaped that result can obtain roughly uniform exposure intensity in the X-axis direction irradiates distribution.
In addition, although present embodiment is as being configured alternately along Y direction by the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b, and by the structure that conduit 401 is connected in series, this structure is not limited to.Such as, each 1st light irradiation unit 100a, 100b, 100c of separate configurations and each 2nd light irradiation unit 200a, 200b can be configured to, respectively individually cold-producing medium be flow through to it.Moreover in this case, the 1st light irradiation unit 100a, 100b, 100c and the 2nd light irradiation unit 200a, 200b might not configure alternately along Y direction.
In addition, although the LED 113 of present embodiment is the structure of the ultraviolet light of 385nm as injection wavelength and is illustrated, also can be the structure of the ultraviolet light of other wavelength of injection, in addition, can be the structure of injection visible light or infrared light.In addition, the purposes of light irradiation device 1 is not limited to make ultraviolet ray hardening type ink or ultraviolet hardening resin sclerosis.
In addition, although the refrigerant pipe 123 of the radiator 120 of present embodiment is roughly circular cartridge as section and is illustrated, preferably can flow through refrigerated medium, such as, can also be roughly the cartridge of rectangle as section.Moreover, in this case, preferably the section configuration of the groove portion 121a of base station 121 is formed as receiving refrigerant pipe 123.In addition, refrigerant pipe 123 might not be needed, base station 121 self can be configured to tubular, and form stream therein.
Figure 12 and Figure 13 is the figure of the variation of the radiator 120 that present embodiment is described.Figure 12 is the profile of the radiator 120A of expression the 1st variation, and Figure 13 is the profile of the radiator 120B of expression the 2nd variation.
Shown in Figure 12, radiator 120A is formed with the stream 123aA that section is rectangle in the inside of base station 121A, this point is different from the radiator 120 of present embodiment.In addition, as shown in figure 13, radiator 120B is formed with section in the inside of base station 121B be circular stream 123aB, and this point is different from the radiator 120 of present embodiment.As shown in radiator 120A, 120B, if form stream 123aA, 123aB in the inside of base station 121A, 121B, then, while not needing refrigerant pipe 123, the thermal resistance between base station 121A, 121B and cold-producing medium can be reduced, therefore, it is possible to improve cooling capacity.
Moreover what will be understood that this disclosed embodiment is citing a little, and non-limiting.Scope of the present invention not above-mentioned explanation, but by shown in claims, be intended to comprise and the whole alter modes in claims equivalents and scope.
Claims (9)
1. a light irradiation device irradiates on shadow surface, and the 1st direction extends, and have the light irradiation device of the linear light of regulation live width on the 2nd direction orthogonal with described 1st direction, it is characterized in that,
Have:
Multiple light irradiation unit, each described light irradiation unit has respectively: substrate; Multiple light source, described multiple light source by optical axis on described 1st direction and 3rd direction orthogonal with described 2nd direction towards aliging, and on the surface of described substrate along described 1st direction across predetermined distance and row arrangement,
And radiator, described radiator is formed with the stream of cold-producing medium along described 1st direction flowing in inside, and arranges in the mode abutted with the back side of described substrate;
Wherein, described multiple light irradiation unit is by N number of 1st light irradiation unit flowed in described 1st direction of described cold-producing medium in described stream; And described cold-producing medium in described stream with described 1st side in the opposite direction on N or N+1 that flow the 2nd light irradiation unit form; Described N is natural number.
2. light irradiation device according to claim 1, is characterized in that,
Described 1st light irradiation unit and described 2nd light irradiation unit, when observing from described 3rd direction, configure alternately along described 2nd direction.
3. light irradiation device according to claim 2, is characterized in that,
Described 1st light irradiation unit configured alternately along described 2nd direction and the described stream of described 2nd light irradiation unit, be connected in series with the configuration sequence in described 2nd direction.
4. the light irradiation device any one of claims 1 to 3 described in claim, is characterized in that,
Described 1st light irradiation unit and described 2nd light irradiation unit also have multiple optical element respectively, and described multiple optical element is configured in the light path of each described light source, so that the light from each described light source is configured as almost parallel light,
Wherein, described 1st light irradiation unit and described 2nd light irradiation unit, when observing from the 1st direction, on the predetermined spot position of injection light on described shadow surface from described 1st light irradiation unit and described 2nd light irradiation unit injection, the mode of optically focused is configured on the circular arc centered by described predetermined spot position.
5. the light irradiation device any one of claims 1 to 3 described in claim, is characterized in that,
Described light source is made up of the LED of more than at least 1.
6. the light irradiation device any one of claims 1 to 3 described in claim, is characterized in that,
Described light is the light comprising the wavelength acting on uv-hardening resin.
7. light irradiation device according to claim 4, is characterized in that,
Described light source is made up of the LED of more than at least 1.
8. light irradiation device according to claim 4, is characterized in that:
Described light is the light comprising the wavelength acting on uv-hardening resin.
9. light irradiation device according to claim 5, is characterized in that,
Described light is the light comprising the wavelength acting on uv-hardening resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014147244A JP2016025165A (en) | 2014-07-17 | 2014-07-17 | Light irradiation device |
| JP2014-147244 | 2014-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105268613A true CN105268613A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510419563.9A Pending CN105268613A (en) | 2014-07-17 | 2015-07-16 | Light irradiation device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2016025165A (en) |
| KR (1) | KR20160010352A (en) |
| CN (1) | CN105268613A (en) |
| TW (1) | TW201613737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364226A (en) * | 2016-03-30 | 2017-11-21 | 豪雅冠得股份有限公司 | Light irradiation device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7008413B2 (en) * | 2017-02-22 | 2022-02-10 | 京セラ株式会社 | Light irradiation device and printing device |
| JP2020119989A (en) * | 2019-01-23 | 2020-08-06 | 東芝ライテック株式会社 | Ultraviolet irradiation unit and ultraviolet irradiation device |
| JP2021053565A (en) * | 2019-09-27 | 2021-04-08 | 東芝ライテック株式会社 | Ultraviolet irradiation apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009064987A (en) | 2007-09-06 | 2009-03-26 | Panasonic Electric Works Co Ltd | Light source unit |
-
2014
- 2014-07-17 JP JP2014147244A patent/JP2016025165A/en active Pending
-
2015
- 2015-07-16 TW TW104123143A patent/TW201613737A/en unknown
- 2015-07-16 KR KR1020150101145A patent/KR20160010352A/en unknown
- 2015-07-16 CN CN201510419563.9A patent/CN105268613A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364226A (en) * | 2016-03-30 | 2017-11-21 | 豪雅冠得股份有限公司 | Light irradiation device |
| TWI733768B (en) * | 2016-03-30 | 2021-07-21 | 日商Ｈｏｙａ股份有限公司 | Light irradiation device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160010352A (en) | 2016-01-27 |
| JP2016025165A (en) | 2016-02-08 |
| TW201613737A (en) | 2016-04-16 |
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