JP2017177088A - Irradiation unit and irradiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress deterioration in luminous efficiency while corresponding to various sizes and shapes of irradiation targets.SOLUTION: An irradiation unit 10 includes: a housing 11; a light-emitting part 13 disposed in the housing 11; a heat sink 17 which is disposed in the housing 11 and thermally connected to the light-emitting part 13; and connecting mechanisms 21, 23 which are disposed in the housing 11 for connecting another irradiation unit to the housing 11. For example, the light-emitting part 13 irradiates light containing ultraviolet rays. For example, the irradiation unit 10 further includes a fan 19 for sending air to the heat sink 17. The fan 19 is disposed side by side with the heat sink 17 in an emitting direction of the light from the light-emitting part 13, and length of the fan in a direction orthogonal to the emitting direction is substantially the same with that of the heat sink 17.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an irradiation instrument and an irradiation apparatus.

  An irradiation device that emits light such as ultraviolet rays is used for printing or curing a resin or an adhesive. As a light source of the irradiation device, a semiconductor light emitting element typified by LED (Light Emitting Diode) is used. While LEDs generate heat by light emission, light emission efficiency decreases at high temperatures. In order to prevent a decrease in luminous efficiency at high temperatures, it is necessary to cool an irradiating device using an LED as a light source by dissipating heat generated by the LED by light emission.

  On the other hand, the irradiation device needs to have a size or shape corresponding to an object to be irradiated with light such as ultraviolet rays.

  Patent document 1 is disclosing the LED tube which can comprise the irradiation apparatus of predetermined length, without using other components.

JP2015-11984

  However, the LED tube of Patent Document 1 does not take into account any heat generated by the LED by light emission. Therefore, there exists a problem that the luminous efficiency of LED may fall with the heat which this LED tube generates by light emission.

  The present invention has been made to solve the above problems, and an object thereof is to provide an irradiation apparatus and an irradiation apparatus that can cope with various dimensions or shapes of an object to be irradiated and suppress a decrease in luminous efficiency. To do.

  In order to achieve the above object, an irradiation apparatus according to one embodiment of the present invention includes a housing, a light-emitting element disposed in the housing, and the housing, and is thermally connected to the light-emitting element. A heat dissipating mechanism, and a connecting mechanism that is disposed in the housing and connects another irradiation device to the housing.

  According to this, the irradiating device can be configured using an linking mechanism to form an irradiating device according to the size or shape of the object to be irradiated, and sufficiently dissipate heat from the connected lighting device. It is possible to suppress a decrease in luminous efficiency. Because the irradiator is equipped with a heat dissipation mechanism that appropriately dissipates the heat generated with light irradiation, even if the heat generation state of the irradiator changes with the connection of the irradiator. This is because it is possible to dissipate heat every time. In addition, there is an advantage that it is not necessary to redesign the heat dissipation mechanism in order to configure an irradiation device according to the size or shape of the irradiation target.

  The light emitting element may irradiate light including ultraviolet rays.

  According to this, the irradiation tool can be used for printing using ultraviolet rays, curing of a resin or an adhesive, or the like. The light emitting element generates a relatively large amount of heat when irradiated with ultraviolet rays. For this reason, the light source element of the irradiation apparatus used as described above is likely to have a high temperature, and therefore, the light emission efficiency is likely to decrease at a high temperature. Accordingly, it is possible to further suppress the decrease in the light emission efficiency of the light source element that is likely to be heated to high temperature.

  The heat dissipation mechanism is a heat sink and a fan that sends air to the heat sink, and is arranged side by side with the heat sink in a light emitting direction of the light emitting element, and a length in a direction perpendicular to the emitting direction is the length You may have a fan substantially the same as a heat sink.

  According to this, the wind sent by the fan in the irradiation device hits the entire heat sink provided side by side with the fan, and the heat radiation amount by the heat sink can be increased. Thereby, the irradiation apparatus can increase the cooling effect by the heat sink, and can further suppress the decrease in light emission efficiency.

  Moreover, the irradiation apparatus which concerns on 1 aspect of this invention is provided with two or more said irradiation tools, and the connection mechanism of one irradiation tool of the said several irradiation tools is the connection of the irradiation tool adjacent to the said one irradiation tool. It is connected with the mechanism.

  According to this, there exists an effect similar to the said irradiation instrument with the irradiation apparatus comprised by connecting a several irradiation instrument with a connection mechanism.

  The irradiation tool and the irradiation apparatus according to the present invention can cope with various dimensions or shapes of the irradiation target and can suppress a decrease in luminous efficiency.

It is a perspective view which shows the external appearance of the irradiation apparatus which concerns on embodiment of this invention. It is a 1st schematic diagram which shows the internal structure of the irradiation instrument which concerns on embodiment of this invention. It is a 2nd schematic diagram which shows the internal structure of the irradiation instrument which concerns on embodiment of this invention. It is a schematic diagram which shows the arrangement | positioning of the wiring and connector of the irradiation tool which concern on embodiment of this invention. It is a schematic diagram which shows the 1st example of the irradiation apparatus comprised with the connected irradiation instrument which concerns on embodiment of this invention. It is a perspective view which shows the external appearance of the 2nd example of the irradiation apparatus comprised with the connected irradiation instrument which concerns on embodiment of this invention. It is a schematic diagram which shows the 2nd example of the irradiation apparatus comprised by the connected irradiation instrument which concerns on embodiment of this invention.

  Hereinafter, an irradiation instrument and an irradiation apparatus according to an embodiment of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, manufacturing steps, order of manufacturing steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements. Also, the following figures are schematic diagrams and are not necessarily shown strictly. In the following description, description may be made using the XYZ axes shown in the referenced drawings. Also, the positive Z-axis direction may be expressed as “up” and the negative Z-axis direction may be expressed as “down”.

(Embodiment)
In the present embodiment, a description will be given of an irradiation apparatus 1 that can cope with various dimensions or shapes of an object to be irradiated and can suppress a decrease in luminous efficiency.

  FIG. 1 is a perspective view showing an appearance of an irradiation apparatus 1 according to the present embodiment.

  As shown in FIG. 1, the irradiation apparatus 1 is an irradiation apparatus that irradiates light 5 in the negative Z-axis direction. The irradiation device 1 is supplied with electric power from the outside, and irradiates light 5 using the supplied electric power. The light 5 is, for example, ultraviolet light, and the irradiation device 1 is used as a device that performs processing such as printing or curing of a resin or an adhesive on the object 51 using ultraviolet light. Although the following description will be made assuming that the light 5 is ultraviolet light, the light 5 may be light of other wavelengths, for example, visible light.

  The irradiation apparatus 1 is configured by connecting a plurality of irradiation apparatuses 10A, 10B, and 10C, each of which irradiates light in the negative Z-axis direction. In addition, irradiation tool 10A, 10B, and 10C may be mutually different irradiation tools, and the same irradiation tool may be sufficient as them. Hereinafter, a case where each of the irradiation instruments 10A, 10B, and 10C is the same irradiation instrument will be described. In addition, each of irradiation tool 10A, 10B, and 10C may be expressed as irradiation tool 10.

  A light emitting element is disposed in the housing 11 of the irradiation instrument 10, and the light emitting element generates heat by light emission. The gas 6 is introduced into the casing 11 from the introduction port 26, and after the heat generated by the light emitting element due to light emission is taken away, the gas 6 is discharged from the discharge port 27 as the gas 8.

  FIG. 2 is a first schematic diagram illustrating the internal configuration of the irradiation instrument 10 according to the present embodiment. FIG. 3 is a second schematic diagram illustrating the internal configuration of the irradiation instrument 10 according to the present embodiment. The internal configuration of the irradiation instrument 10 will be described with reference to FIGS.

  The irradiation instrument 10 includes a housing 11, a light emitting unit 13, a substrate 15, a heat sink 17, a fan 19, connection mechanisms 21 and 23, a cover 25, an introduction port 26, and a discharge port 27.

  The housing 11 is a housing that houses the components of the irradiation instrument 10 therein. The material of the housing 11 is a rigid member such as metal or synthetic resin. When a metal (aluminum, copper, etc.) having a relatively high thermal conductivity is used as the material of the casing 11, the effect of preventing the temperature inside the irradiation instrument 10 from being increased by heat conduction and radiation by the casing 11 is enhanced. The casing 11 is provided with coupling mechanisms 21 and 23, an inlet 26, and an outlet 27. The housing 11 is, for example, a column having the Z-axis direction as the axial direction, the introduction port 26 is disposed on the upper surface (the bottom surface on the Z-axis positive direction side), and the discharge port 27 is disposed on the side surface.

  The light emitting unit 13 is a light emitting unit including a light emitting element that emits light by supplied electric power. The light emitting unit 13 includes a semiconductor light emitting element, more specifically an LED, as the light emitting element. Moreover, the light which the light emission part 13 irradiates is an ultraviolet-ray, for example. The light emitting unit 13 emits heat by light emission. The heat generated by the light emitting unit 13 is transmitted to the heat sink 17 through the substrate 15 and radiated.

  The substrate 15 is a substrate on which the light emitting unit 13 is disposed. The substrate 15 is a plate that is fixed to the inner wall of the housing 11 and is made of a metal (eg, copper or aluminum) having a relatively high thermal conductivity, ceramic, or the like. The substrate 15 receives heat generated by the light emitting unit 13 and transmits the heat to the heat sink 17.

  The heat sink 17 is a heat radiating member for radiating the heat generated by the light emitting unit 13 to the gas. The heat sink 17 has, for example, a plurality of fins, and improves heat dissipation efficiency by relatively increasing the surface area. The heat sink 17 corresponds to a part of the heat dissipation mechanism. Note that the heat sink 17 is merely an example of a heat dissipation mechanism, and a heat sink 17 that moves (dissipates heat) the heat generated by the light emitting unit 13 to the outside may be employed instead of the heat sink 17.

  The fan 19 is a blower that sends the wind 7 to the heat sink 17. The fan 19 generates the wind 7 by rotating the propeller with the supplied electric power. The fan 19 is arranged side by side with the heat sink 17 in the Z-axis direction, and is fixed and arranged in the housing 11 at a position and orientation where the generated wind 7 hits the heat sink 17.

  The length of the fan 19 in the direction orthogonal to the Z axis is substantially the same as that of the heat sink 17. More specifically, the lengths of the heat sink 17 and the fan 19 in the X-axis direction are both substantially equal to W1 as shown in FIG. 2, and the Y-axis of the heat sink 17 and the fan 19 is shown in FIG. Both lengths in the direction are substantially equal to W2. By setting it as such a dimension, the heat | fever 7 sent by the fan 19 can fully be applied to the heat sink 17, and the heat sink 17 can be cooled. The fan 19 corresponds to a part of the heat dissipation mechanism.

  The connection mechanisms 21 and 23 are connection mechanisms that connect an irradiation device (also referred to as “another irradiation device”) different from the irradiation device 10 to the housing 11. The irradiation device connected to the housing 11 and the irradiation device 10 are connected by the connection mechanisms 21 and 23 at least by mechanical connection such as fitting or engagement. A plurality of irradiation instruments 10 connected by the connection mechanisms 21 and 23 constitute the irradiation apparatus 1.

  For example, the coupling mechanism 21 is a convex portion that protrudes outward from the irradiation device 10 on the outer surface of the housing 11. The connection mechanism 23 is a recess provided in the outer surface of the housing 11 so as to be recessed toward the inside of the irradiation instrument 10.

  In addition, the connection mechanisms 21 and 23 may connect an irradiation tool by electrical connection in addition to mechanical connection. For example, the coupling mechanism 21 may be an electrode 31 projecting outward from the irradiation device 10 on the outer surface of the housing 11, more specifically a banana plug. Moreover, the connection mechanism 23 is good also as the electrode 33 provided in the outer surface of the housing | casing 11 toward the inner side of the irradiation instrument 10, and more specifically, a banana jack. In this way, there is an advantage that a dedicated wiring for receiving power for operating the light emitting unit 13 and the fan 19 of the irradiation instrument 10 is not necessary.

  Further, the irradiating device connected to the housing 11 by the connecting mechanisms 21 and 23 is an irradiating device that irradiates light 5 (for example, ultraviolet rays) in the negative direction of the Z axis similarly to the irradiating device 10, and is the same as the irradiating device 10. (In other words, the irradiation tool 10A may be different from the irradiation tool 10A) or may be different from the irradiation tool 10. The irradiation instrument 10 may include only one of the coupling mechanisms 21 and 23, or may include two or more coupling mechanisms 21 or 23. Specific shapes and numbers of the coupling mechanisms 21 and 23 will be described in detail later.

  The cover 25 is a cover member that covers the irradiation device 1 from the irradiation direction side of the light 5. The cover 25 is disposed at a position corresponding to the lower surface of the housing 11. The material of the cover 25 is translucent synthetic resin or glass.

  The introduction port 26 is an introduction port through which the gas 6 is introduced into the housing 11. For example, a filter is provided at the introduction port 26 to prevent foreign matters such as dust from being introduced into the housing 11.

  The discharge port 27 is a discharge port through which the gas 8 is discharged from the inside of the housing 11. The discharge port 27 may be provided on the side surface of the housing 11 or may be provided at a position corresponding to the lower surface of the housing 11.

  As described above, the irradiation device 10 is designed as described above so that it emits light by using the supplied electric power and appropriately dissipates heat generated by the light emission. And the irradiation apparatus 1 comprised by the connected irradiation tool 10 is irradiated with the light 5 by connecting the irradiation tool 10 using the connection mechanisms 21 and 23 according to the dimension or shape of the target object of irradiation. The area to be changed can be changed according to the object to be irradiated depending on the way of connection.

  In addition, in order for an irradiation tool that does not include the coupling mechanisms 21 and 23 to correspond to various dimensions and shapes of the irradiation object, it is necessary to employ an irradiation apparatus corresponding to the irradiation object. A new design of the heat dissipation mechanism corresponding to the object 51 is required. For example, in order to irradiate the object 51 in FIG. 1 with the light 5, it is necessary to employ a housing having a size and shape that combines the irradiation devices 10 </ b> A, 10 </ b> B, and 10 </ b> C in FIG. It is necessary to adopt a size and shape of the heat dissipation mechanism corresponding to the object 51.

  According to the irradiation tool 10 of the present embodiment, the irradiation tool 10 can be connected by the connecting mechanisms 21 and 23 to cope with various dimensions and shapes of the irradiation object without designing a new heat dissipation mechanism. There is an effect that can be done.

  Note that the above is not intended to exclude the design of a new heat dissipation mechanism to accommodate various dimensions or shapes of the irradiation object, but various dimensions or shapes of the irradiation object. In addition, a new heat dissipation mechanism may be designed to further improve the heat dissipation performance of the heat dissipation mechanism.

  Next, the arrangement of wirings that connect the electrodes 31 and 33 and the light emitting unit 13 will be described. As described above, the light emitting unit 13 emits heat by light emission. When the temperature changes, the electrodes 31 and 33 and the wirings may change in size or shape, which may cause damage or failure. Therefore, it is required to suppress the temperature change of the electrodes 31 and 33 and the wiring by making it difficult for the heat generated by the light emitting unit 13 to be transmitted to the electrodes 31 and 33 and the wiring.

  FIG. 4 is a schematic diagram showing the arrangement of the wiring 35 and the connector 37 of the irradiation instrument 10 according to the present embodiment.

  As shown in FIG. 4, the electrodes 31 and 33, the wiring 35 that connects the electrodes 31 and 33 and the light emitting unit 13, and the connector 37 that connects the wirings 35 to each other are arranged in a region 41.

  The region 41 is a partial region of the peripheral portion of the substrate 15 and is a region extending so as to connect the electrode 31 and the electrode 33. The region 41 is away from the light emitting unit 13 and is a position where heat transferred from the light emitting unit 13 is relatively small. Therefore, the electrodes 31 and 33, the wiring 35, and the connector 37 are arranged in the region 41, so that the increase in temperature can be suppressed and changes in dimensions and the like due to temperature changes can be suppressed. As a result, damage or failure of the electrodes 31 and 33, the wiring 35, the connector 37, and other components of the irradiation instrument 10 can be prevented.

  Next, the shape of the irradiation apparatus 1 configured by connecting the irradiation tool 10 will be described with two examples.

  FIG. 5 is a schematic diagram illustrating a first example of the irradiation apparatus 1 configured by the connected irradiation instruments 10 according to the present embodiment. FIG. 5 shows the irradiation device 1 (the irradiation device 1 viewed from the positive direction of the Z axis) as viewed from above.

  As shown in FIG. 5, the irradiation apparatus 1 is configured by connecting a plurality of irradiation apparatuses 10 (10 </ b> A, 10 </ b> B, and 10 </ b> C) in a straight line parallel to the X axis by connection mechanisms 21 and 23. Each of the plurality of irradiation devices 10 is connected in a posture in which the light 5 is irradiated in the negative Z-axis direction.

  Each of the irradiation tools 10 includes one connection mechanism 21 and one connection mechanism 23 on two side surfaces facing each other in a top view. And the connection mechanism 23 of the adjacent irradiation instrument 10 is connected with the connection mechanism 21, and the several irradiation instrument 10 is connected linearly.

  In addition, although the irradiation apparatus 1 which connected the three irradiation fixtures 10 linearly in FIG. 5 is shown, it is also possible to connect two or more irradiation fixtures 10 more.

  The irradiation apparatus 1 configured in this way can irradiate the object 5 shown in FIG. The dimension of the object 51 is substantially the same as the dimension of the cross-sectional shape parallel to the XY plane of the irradiation apparatus 1 (length L1 in the X-axis direction and length L2 in the Y-axis direction). In addition, if the number of the irradiation tools 10 which comprise the irradiation apparatus 1 increases, the length of the X-axis direction of the irradiation apparatus 1 will increase according to it, and the length of the X-axis direction of the target object 51 will also increase.

  FIG. 6 is a perspective view showing an appearance of an irradiation apparatus 1A that is a second example of the irradiation apparatus 1 constituted by the connected irradiation instruments 10 according to the present embodiment.

  The irradiation apparatus 1A shown in FIG. 6 is configured by connecting four irradiation tools 10A, 10B, 10C, and 10D (hereinafter also referred to as “four irradiation tools 10A etc.”). Here, the four irradiation instruments 10A and the like are arranged in two rows in the X-axis direction and two rows in the Y-axis direction. Each of the four irradiation tools 10A and the like is the same as the irradiation tool 10 described above, but the coupling mechanisms 21 and 23 are arranged as follows.

  FIG. 7 is a schematic diagram showing an irradiation apparatus 1A that is a second example of an irradiation apparatus including four connected irradiation apparatuses 10A and the like according to the present embodiment.

  As shown in FIG. 7, the irradiation apparatus 1A is connected so that four irradiation tools 10A and the like are arranged in two rows in the X-axis direction and the Y-axis direction by the connection mechanisms 21 and 23, respectively. Configured. The four irradiation devices 10A and the like are connected in a posture that irradiates light in the negative Z-axis direction.

  Further, the number of coupling mechanisms 21 and 23 provided in each of the four irradiation devices 10A is different. For example, the irradiation instrument 10 includes the coupling mechanisms 23A and 23B, which are the two coupling mechanisms 23, on two side surfaces that are adjacent to each other in a top view. Irradiation device 10B includes one connection mechanism 21 and one connection mechanism 23 on two side surfaces that are adjacent to each other in a top view. Each of the irradiation instruments 10 </ b> C and 10 </ b> D includes one connection mechanism 21.

  7 shows the irradiation apparatus 1A in which the irradiation devices 10 and the like are arranged in two rows in each of the X-axis direction and the Y-axis direction, but there are three or more rows in each of the X-axis direction and the Y-axis direction. The irradiation instrument 10 or the like may be arranged, and the number of arrangements in the X-axis direction and the Y-axis direction may be different. Moreover, it may not be rectangular shape in top view, and arbitrary shapes according to the dimension or magnitude | size of a target object, for example, L shape or U shape, may be sufficient as it.

  The irradiation apparatus 1 </ b> A configured as described above can irradiate the object 5 shown in FIG. 6 with the light 5. The dimension of the object 53 is substantially the same as the dimension of the cross-sectional shape parallel to the XY plane of the irradiation apparatus 1A (length L3 in the X-axis direction and length L4 in the Y-axis direction).

  As shown in FIGS. 6 and 7, the irradiation devices 1 and 1A configured by connecting a plurality of irradiation tools 10 are used for irradiation objects having various sizes and shapes such as the objects 51 and 53. Light 5 can be irradiated.

  The present invention can be applied to a lighting apparatus and an irradiation apparatus that correspond to the size or shape of an object to be irradiated and suppress a decrease in luminous efficiency. Specifically, the present invention can be applied to a lighting apparatus and an irradiation apparatus that irradiate light such as ultraviolet rays for printing or curing a resin or an adhesive.

DESCRIPTION OF SYMBOLS 1, 1A irradiation apparatus 5 Light 6, 8 Gas 7 Wind 10, 10A, 10B, 10C, 10D Irradiation instrument 11 Housing | casing 13 Light emission part 15 Board | substrate 17 Heat sink 19 Fan 21, 23, 23A, 23B Connection mechanism 25 Cover 26 Inlet 27 Discharge port 31, 33 Electrode 35 Wiring 37 Connector 41 Area 51, 53 Object

Claims (4)

A housing,
A light emitting device disposed in the housing;
A heat dissipation mechanism disposed in the housing and thermally connected to the light emitting element;
An irradiation device comprising: a coupling mechanism that is disposed in the housing and connects another irradiation device to the housing. The irradiation instrument according to claim 1, wherein the light emitting element emits light including ultraviolet rays. The heat dissipation mechanism is
A heat sink,
A fan for sending air to the heat sink, the fan being arranged side by side in the heat sink in the light emitting direction of the light emitting element, and having a length substantially perpendicular to the heat sink in a direction perpendicular to the emitting direction. The irradiation instrument according to claim 1 or 2. A plurality of irradiation devices according to any one of claims 1 to 3,
The connection mechanism of one irradiation tool among the plurality of irradiation tools is connected to the connection mechanism of the irradiation tool adjacent to the one irradiation tool.

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