JP2017049092A - Light irradiator and light irradiation method thereof - Google Patents

Abstract

When using a light irradiation device, the light irradiation device is less likely to be damaged even if it contacts or collides with another structure, and has excellent adhesion to a work position, and a light irradiation method for the light irradiation device To provide. A light irradiator includes a light emitting device that emits light including ultraviolet light, a mounting substrate that mounts the light emitting device, and a support member that supports the mounting substrate on a mounting surface formed on one side. The elastic member 40 is provided on at least one of the mounting surface and the mounting substrate, and the elastic member is provided at the end in the light irradiation direction. [Selection] Figure 2

Description

  The present disclosure relates to a light irradiator used in a light irradiation apparatus and a light irradiation method thereof.

  2. Description of the Related Art Conventionally, there has been proposed an ultraviolet irradiation device that cures a processing object containing a photocurable material by irradiating light such as ultraviolet rays from a light irradiator. Such an ultraviolet irradiation device includes an apparatus main body incorporating a power supply circuit, a light irradiator that irradiates ultraviolet light, and a cable that connects the light irradiator and the apparatus main body. In the ultraviolet irradiation device, the light irradiation work is performed on the workpiece by the operator holding and operating the light irradiator.

  For example, as described in Patent Document 1, the ultraviolet irradiation device described above is configured such that a glass or a translucent resin such as a lens is installed on the front end side of the light irradiator. More specifically, the light irradiator includes a light source unit such as an LED provided inside the head casing, an optical system such as a lens provided on the light irradiation side of the light source unit, and a head casing that covers the optical system. A head cover or the like provided on the distal end side of the body is provided.

Japanese Patent Laid-Open No. 2005-199672

  However, the light irradiator described in Patent Document 1 uses a breakable component such as a glass material on the tip side. Therefore, when the operator operates the light irradiator, there is a possibility that the glass or the like may be damaged by accidentally colliding the light irradiator with the object to be processed. In addition, the light irradiator may be operated so as to come into contact with the object to be processed during the work. If a breakable member such as glass is installed on the front end side of the light irradiator, Adhesion is poor and it is difficult to work efficiently.

  In the future, the field of use of light irradiators will expand, and for example, it is expected to be used in factories and construction sites such as architectural civil works. For this reason, when an operator performs an operation while holding the light irradiator, it is assumed that the light irradiator is used in an environment where there is a high possibility that the light irradiator will come into contact with another structure or the like.

  In the embodiment of the present disclosure, when a light irradiator is used, the light irradiator and the light irradiator which are not easily damaged even if they come into contact with or collide with other structures and have excellent adhesion to a work position. It is an object to provide a light irradiation method.

  In order to solve the above problems, a light irradiator according to an embodiment of the present disclosure includes a light emitting device that emits light including ultraviolet light, a mounting substrate on which the light emitting device is mounted, and a mounting surface formed on one side. A support member that supports the mounting substrate, and an elastic member that is provided on at least one of the support member and the mounting substrate are provided, and the elastic member is provided at the end in the light irradiation direction.

  In order to solve the above-described problem, a light irradiation method for a light irradiator according to an embodiment of the present disclosure includes: a first light irradiator that irradiates the light irradiator separately from an object to be irradiated; 1 irradiation process, and the 2nd irradiation process of irradiating, making the said elastic member of the said light irradiation device, and the said to-be-irradiated object contact after the said 1st irradiation process.

  According to the light irradiator according to the embodiment of the present disclosure, since the elastic member is provided at the extreme end in the light irradiation direction of the support member, even if the elastic member comes into contact with another structure, the elastic member does not impact. Absorption can suppress damage to the light irradiator.

  Further, according to the light irradiation method of the light irradiator according to the embodiment of the present disclosure, the elastic member is brought into close contact with the object to be processed after the first irradiation process in which the object is irradiated with light away from the object. By performing the second irradiation step of irradiating light, it is possible to enhance the adhesion without damaging the device and to photo-cur the object to be processed in a short time.

It is a perspective view showing typically the whole light irradiation apparatus provided with the light irradiation machine concerning a 1st embodiment. It is a perspective view which shows typically the state which removed the elastic member from the support member in the light irradiation device which concerns on 1st Embodiment. FIG. 3 is a cross-sectional view schematically showing the light irradiator according to the first embodiment with a part thereof cut away. It is a schematic diagram which shows the light irradiation method of a light irradiation device, and is sectional drawing which shows typically the state which apply | coated the coating material containing a photocuring material to a wall surface as a to-be-irradiated object. It is a schematic diagram which shows the light irradiation method of a light irradiation device, and is a schematic diagram which shows typically the state which apply | coats a to-be-irradiated object, leaves | separates a light irradiation device from a wall surface, and irradiates the light containing an ultraviolet-ray. It is a schematic diagram which shows the light irradiation method of a light irradiation device, and is a schematic diagram which shows the state which makes a light irradiation device contact | adhere to the to-be-irradiated object of a wall surface, and performs light irradiation. (A) is a front view schematically showing a light irradiator according to the second embodiment, and (b) is a cross section schematically showing a part of the light irradiator according to the second embodiment omitted. FIG. (A) is a front view schematically showing a light irradiator according to the third embodiment, and (b) is a cross section schematically showing a part of the light irradiator according to the third embodiment omitted. FIG. (A) is a front view which shows typically the light irradiation device which concerns on 4th Embodiment, (b) is a cross section which abbreviate | omits a part of light irradiation device which concerns on 4th Embodiment, and is shown schematically FIG. It is sectional drawing which shows typically the structure which provided the convex part in the outer surface of the elastic member. It is sectional drawing which shows typically the structure which provided the translucent resin between the elastic member and the light-emitting device. It is sectional drawing which abbreviate | omits a part of light irradiation device concerning 5th Embodiment, and is shown typically. It is sectional drawing which expands and shows typically the structure which provided the lens in the package of the light-emitting device provided in each light irradiation device. It is a perspective view which shows the application example of the handle in a light irradiation device, and is typically shown in the arrow view from the back of a light irradiation device. It is the perspective view which shows the other application example of the handle in a light irradiation device, and is typically shown in the arrow view from the back of a light irradiation device. It is the perspective view which shows the other application example of the handle in a light irradiation device, and is typically shown in the arrow view from the back of a light irradiation device.

  Hereinafter, the illumination device according to each embodiment will be described with reference to the drawings. The drawings referred to in the following description schematically show the respective embodiments, and therefore the scale, spacing, positional relationship, etc. of each member are exaggerated, or some of the members are not shown. There may be. Moreover, in the following description, the same name and code | symbol indicate the same or the same member in principle, and shall omit detailed description suitably. Furthermore, the directions shown in each figure indicate relative positions between components, and are not intended to indicate absolute positions.

(First embodiment)
The light irradiator 1 of 1st Embodiment is demonstrated with reference to FIGS. 1-3. The light irradiator 1 is connected to the power supply device G of the light irradiation device S by a power cable C. The light irradiator 1 is a device that irradiates the irradiated object W with light including ultraviolet rays and photocures the irradiated object W. The light irradiator 1 is supported in a light irradiation direction from the light emitting device 10, a light emitting device 10 that emits light including ultraviolet light, a mounting substrate 20 that mounts the light emitting device 10, a support member 30 that supports the mounting substrate 20, and the light emitting device 10. And an elastic member 40 provided at the outermost end of the member 30, and further includes a handle 50 provided on the support member 30.

As shown in FIGS. 2 and 3, the light emitting device 10 is provided so as to cover the light emitting element 13 having a semiconductor layer stacked on a substrate such as sapphire, the package 11, and the light emitting element 13 installed in the package 11. A translucent member 12. The light emitting device 10 is mounted on the wiring in the mounting region 21 of the mounting substrate 20 and is arranged in the mounting region 21 in a matrix direction (vertical and horizontal directions). The light emitting element 13 is, for example, a semiconductor element such as a light emitting diode (LED) or a semiconductor laser (LD), and the semiconductor layer constitutes a light emitting portion. The semiconductor layer is formed, for example, on the c-plane (main surface) of the sapphire substrate via a buffer layer, and has a structure in which an n-type semiconductor layer, an active layer, and a p-type semiconductor layer are stacked in this order from the bottom. doing. The active layer has a quantum well structure having, for example, a well layer (light emitting layer) and a barrier layer. Semiconductor layer, GaN, AlN or InN, or group III-V nitride semiconductor is a mixed crystal _{thereof, (In X Al Y Ga 1} -X-Y N (0 ≦ X, 0 ≦ Y, X + Y ≦ 1)) It is preferable that it is comprised.

The light emitting element 13 may emit light having a wavelength including the ultraviolet region as long as the wavelength of the emitted light can cure the resin. The light emitting element 13 emits light having a wavelength shorter than 430 nm, for example, and preferably emits light in an ultraviolet region having a wavelength shorter than 400 nm. However, in this case, the light emitting element 13 may emit light so as to include the ultraviolet region, and a light emitting element having a peak wavelength longer than the ultraviolet region (less than 400 nm) may be used. For example, it is possible to use the light emitting element 13 whose emission peak wavelength is around 405 nm and whose base on the short wavelength side of the spectrum is less than 400 nm.
The light emitting element 13 usually has a pair of electrodes. The electrodes may be disposed on different sides of the semiconductor layer, or the electrodes may be disposed on the same side.

  One light emitting device 10 may be mounted with only one light emitting element 13 or may be mounted with two or more light emitting elements 13. In the latter case, the light emitting elements 13 having different emission wavelengths may be used in combination, and preferably include one or more light emitting elements 13 that emit light in the ultraviolet region, all of which are light emitting elements 13 that emit light in the ultraviolet region. It is preferable. In order to shorten the curing operation of the light irradiator 1, the light emitting device 10 may include a light emitting element 13 that emits light in the ultraviolet region and a light emitting element 13 that emits light in the infrared region. By doing in this way, since the hardening operation can be performed while warming the surface of the irradiated object, the operation time required for the hardening can be shortened.

  The light emitting element 13 may be flip-chip mounted on the electrode portion of the package 11 or may be mounted by electrically connecting the bottom surface to the electrode portion and using a wire or the like.

  The light emitting element 13 is mounted on the electrode portion of the package 11 by, for example, tin-bismuth, tin-copper, tin-silver, gold-tin, or the like, Au and Sn, Au and Si, Au and Ge. Eutectic alloys such as alloys mainly composed of Au and Cu, Ag and Cu, or conductive paste such as silver, gold and palladium, bumps, anisotropic conductive materials, brazing materials of low melting point metals, This is performed via a resin bonding member such as epoxy or silicone resin. In particular, it is preferable to use an inorganic material that is not easily deteriorated by the emission of ultraviolet light, such as solder, an alloy, or a eutectic alloy.

  The package 11 is a member on which the light emitting element 13 and the electronic component are placed, and the package 11 preferably has a recess in order to emit light from the light emitting element 13 in an arbitrary direction. The package 11 is formed of, for example, an insulating material such as glass, ceramics, resin, wood, and pulp, a single material of a conductive material such as a semiconductor, metal (for example, copper, silver, gold, aluminum, etc.), and a composite material thereof. can do. Of these, metals, ceramics, resins and the like are preferable. As the ceramic, aluminum nitride with high heat dissipation is preferable.

The translucent member 12 is provided so as to cover the light emitting region of the light emitting element 13. Therefore, it is formed of a member that can efficiently extract the light emitted from the light emitting element 13. For example, it is preferable to transmit 90% or more of the wavelength of light emitted from the light emitting element 13.
Such a member can be formed of, for example, a thermoplastic resin, a thermosetting resin, glass, or the like. Especially, since the light emitting element 13 emits ultraviolet light, it is difficult to deteriorate. Inorganic glass is preferred. When the emission wavelength of the light emitting element is 300 nm or less, it is preferable to use quartz glass.

  The light emitting device 10 is not limited to the structure that directly irradiates ultraviolet light or light containing ultraviolet light, but may be configured to irradiate light containing ultraviolet light or ultraviolet light via a wavelength conversion member (not shown). . The wavelength conversion member converts irradiation light from the light emitting element 13 into light having a different wavelength. The wavelength conversion member is, for example, a phosphor particle, and is provided so as to cover the light emitting element 13 via a binder such as a resin. Moreover, in the light-emitting device 10, it is good also as a structure which contains the wavelength conversion member in the translucent member 12. FIG.

  The shape of the mounting substrate 20 is not particularly limited, but here, a mounting region 21 in which the light emitting device 10 is mounted is formed in the center with a rectangular shape. In the mounting region 21 of the mounting substrate 20, wiring that can be electrically connected when the light emitting device 10 is mounted is formed in advance. The mounting substrate 20 is preferably made of an insulating material, and is preferably made of a material that hardly emits light emitted from the light emitting device 10 or external light. The mounting substrate 20 may be a material having a certain degree of strength or a flexible material.

  The mounting substrate 20 has a wiring portion (including a relay wiring portion) and a pad electrode for electrical connection with the outside along the periphery of the mounting region 21. Further, a protective element (for example, a Zener diode) that suppresses application of excessive voltage is connected to the wiring portion of the mounting substrate 20. The pad electrode may be formed on the back surface opposite to the mounting area 21 of the mounting substrate 20.

  The support member 30 supports the mounting substrate 20 on which the light emitting device 10 is mounted. The support member 30 includes a support housing 33, an attachment surface 31 formed on one side of the support housing, and a frame edge portion 32 formed by raising the periphery of the attachment surface 31. A handle 50 is provided on the other side of the housing 33 opposite to the mounting surface 31.

  The mounting surface 31 is formed flat on one side of the support housing 33 and has a configuration for mounting the mounting substrate 20. As an example, when the mounting board 20 is attached with screws, the mounting surface 31 has screw holes for fixing the mounting board 20 with screws. Further, the attachment surface 31 is configured so that wiring can be installed so that it can be connected to the pad electrode of the mounting substrate 20. This wiring is connected to the power cable C.

  The frame edge portion 32 is formed by rising from the periphery of the attachment surface 31 in the light irradiation direction (direction orthogonal to the attachment surface 31). The frame edge portion 32 is formed in an annular shape here, and is formed to be higher than the combined height of the mounting substrate 20 and the light emitting device 10 attached to the attachment surface 31. In the drawing, the frame edge portion 32 is described so as to be higher than the uppermost portion of the light emitting device 10, but may be formed so as to be substantially the same height as the uppermost portion of the light emitting device 10. .

  The support housing 33 is formed of a metal material, an insulating material, or a partial metal material and an insulating material. The support housing 33 is configured to be able to connect a wiring for supplying power sent from the power supply device G via the power cable C to a wiring for electrically connecting the mounting substrate 20. The support housing 33 may be configured to have a role as a heat dissipation mechanism by installing a metal material in a state in which a portion in contact with the back surface of the mounting substrate 20 is insulated from electrical wiring.

  The elastic member 40 is provided at the endmost portion of the support member 30 in the light irradiation direction, and reduces the impact when it comes into contact with the outside of the irradiated object W or the like. The elastic member 40 is attached to the frame edge portion 32 of the support member 30 so as to face and cover the light emitting device 10. In addition, the elastic member 40 can also contact | abut in the state contact | adhered by elastically deforming to the to-be-irradiated object W etc., and can also play the role which does not send out the light containing an ultraviolet-ray in an unplanned direction. The elastic member 40 is formed in a bottomed cylindrical shape as an example, and is detachably installed on the frame edge portion 32 of the support member 30. As will be described later, the elastic member 40 is directly contacted with the irradiated object and irradiates, so the surface thereof may become dirty or the member may be missing. Therefore, it is preferable to use a detachable and replaceable elastic member 40. The elastic member 40 has a bottomed cylindrical bottom surface portion as a light transmitting portion 41 that transmits light including ultraviolet rays, and is engaged with the peripheral edge of the light transmitting portion 41 in contact with the frame edge portion 32. A portion 42 is provided.

  Then, the engaging portion 42 engages with the outside of the frame edge portion 32, and in the range of the height of the frame edge portion 32, here the height from the light transmitting portion 41 is equal or equal to or higher. It has a length. The thickness of the light transmitting portion 41 and the thickness of the engaging portion 42 may be the same, but the thickness of the engaging portion 42 is preferably larger than the thickness of the light transmitting portion 41. Thereby, since the engagement part 42 with a large thickness cannot be easily deformed, the fixing strength between the frame edge part 32 of the support member 30 and the engagement part 42 can be increased. On the other hand, the light transmitting portion 41 having a small thickness can easily transmit light emitted from the light emitting device 10. In the light emitting device 10 having the light transmission part 41 with a small thickness, the thickness of the engagement part 42 is, for example, 1.2 to 2 times the thickness of the light transmission part 41.

  In the elastic member 40, at least the light transmitting portion 41 can transmit light including ultraviolet rays, and the light transmitting portion 41 and the engaging portion 42 can be elastically deformed. Examples of the elastic member 40 include a resin-based material. Examples of such a resin include a thermosetting resin, a thermoplastic resin, a modified resin thereof, a hybrid resin containing one or more of these resins, and the like. Specifically, an epoxy resin composition, a modified epoxy resin composition (silicone-modified epoxy resin etc.), a silicone resin composition, a modified silicone resin composition (epoxy-modified silicone resin etc.), a hybrid silicone resin, a polyimide resin composition, Modified polyimide resin composition, polyamide resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polycyclohexane terephthalate resin, polyphthalamide (PPA), polycarbonate resin, polyphenylene sulfide (PPS), liquid crystal polymer (LCP), ABS resin, phenol resin And resins such as acrylic resin, PBT resin, urea resin, BT resin, and polyurethane resin. Among these, it is preferable to use a silicone resin that has excellent ultraviolet resistance and allows easy adjustment of hardness.

  The elastic member 40 does not have to be transparent as long as it can transmit light including ultraviolet rays, and may be configured to be able to diffuse light in a translucent or cloudy color. The elastic member 40 is formed with a thickness of 2 to 5 mm, for example, so that the elastic member 40 can be brought into contact with and closely contact the irradiated object W or the like during light irradiation. For the elastic member 40, it is preferable to use a low-hardness resin in order to improve adhesion, and for example, it is preferable to use a resin of type A to type E with durometer hardness. Accordingly, the elastic member 40 is elastically deformed even if there is a certain degree of unevenness on the irradiated object W side to be abutted, and covers the shape of the unevenness and has excellent adhesion.

Further, when the light emitting device 10 irradiates ultraviolet rays or light including ultraviolet rays through the wavelength conversion member, the elastic member 40 may contain the wavelength conversion member. When the protective glasses are worn and the curing operation is performed, it is difficult to visually recognize the light emitted in the ultraviolet region. However, by providing the wavelength conversion member in this way, the irradiation light can be visually recognized. Therefore, for example, green light or red light converted by the wavelength conversion member can be used as the guide light, and the irradiation operation can be performed efficiently.
Furthermore, in order to widen the light distribution of the light irradiator 1, the elastic member 40 may contain a diffusing material. Zirconium oxide, aluminum oxide, diamond, or the like can be used as the diffusion material.

  The handle 50 is a part used by an operator to hold and operate the light irradiator 1. The handle 50 is continuously formed behind the support member 30. Here, the handle 50 is formed in a cylindrical shape so that the external shape is a rod shape and wiring can be installed therein. The handle 50 is configured such that the power cable C is inserted therein. Note that the handle 50 is provided with a switch 51 for turning on / off the light irradiation so that the operator can turn on / off the light emitting device 10 at hand.

The light irradiator 1 having the above-described configuration is provided with an elastic member 40 at the outermost end in the light irradiation direction of the support member 30. Even if it contacts, the elastic member 40 can relieve the impact. In addition, when the light irradiator 1 irradiates the object W, which is a light curable paint applied to the wall surface, with light including ultraviolet rays, for example, the light irradiator 1 is in contact with the application surface of the light curable paint, The elastic member 40 is elastically deformed on the application surface, so that the adhesion can be improved and the light irradiation efficiency can be further increased. And since the adhesiveness is high when the elastic member 40 contacts the irradiated object W or the like, it is possible to avoid leakage of light containing ultraviolet rays in an unexpected direction.

Next, a light irradiation method of the light irradiator 1 will be described with reference to FIGS. 4A to 4C.
As shown in FIG. 4A, after first applying a photo-curing coating material, which is a photo-curable substance, to the wall surface, as shown in FIG. 4B, the light irradiator is spaced apart from the irradiation object W by a predetermined distance. 1 to irradiate light including ultraviolet rays (first irradiation step). And the light irradiation machine 1 is moved about the whole to-be-irradiated object W, and light is irradiated. The irradiated object W is photocured to a predetermined hardness when irradiated with light including ultraviolet rays. Further, as shown in FIG. 4C, the elastic member 40 is brought into close contact with the irradiated object W once irradiated with light once at a distance to perform the light irradiation work (second irradiation step). .

  Depending on the object to be irradiated W, photocuring is promoted by performing the light irradiation work in a state where the elastic member 40 of the light irradiator 1 is brought into direct contact with the work position and brought into close contact therewith. Since the elastic member 40 is elastically deformed and brought into close contact with the light irradiation device 1 even when the elastic member 40 serving as the tip of the light irradiation device 1 is brought into contact with the work position (the irradiation object W), the irradiation surface that becomes the irradiation object W In contrast, the light axis of the light emitting element 13 can be positioned in a direction orthogonal to each other, and the adhesiveness of the elastic member 40 is high, so that light hardly leaks from the periphery of the light irradiator 1. Furthermore, since the elastic member 40 can absorb an impact when contacting the working position, there is no fear that the support member 30 and the light emitting device 10 of the light irradiator 1 are damaged.

(Second Embodiment)
Next, with reference to FIGS. 5 to 13, the light irradiators 1 </ b> A to 1 </ b> J will be described, and another configuration of the light emitting device common to the respective light irradiators will be described. In addition, the same structure already demonstrated, or the structure which is common in FIGS. 5-7 attaches | subjects the same code | symbol, and abbreviate | omits description suitably.
As shown in FIGS. 5A and 5B, the light irradiator 1A is different from the light irradiator 1 in the configuration of the support member 130 and the elastic member 40A.
The support member 130 of the light irradiator 1A is formed flat to the periphery, and an attachment surface 131 is formed at the center thereof. The elastic member 40 </ b> A is provided in a frame shape continuously to the periphery of the mounting substrate 20. Here, the elastic member 40A has a trapezoidal cross-sectional shape. 40 A of elastic members are installed so that the front-end | tip part may become higher than the height of the light-emitting device 10 mounted in the mounting board | substrate 20. As shown in FIG.

  When the irradiated object W is a flat surface such as a paint including a photocurable material applied to the wall surface, the elastic member 40A is elastically deformed so that, for example, the frame opening is widened when contacting the wall surface. (Refer to the phantom line in FIG. 5) so as to be in close contact with the wall surface. Since the elastic member 40A is positioned at the endmost portion of the support member 130 in the light irradiation direction, even when the elastic member 40A is in contact with the wall surface to be irradiated W, the light emitting device 10 and the irradiated object W Are spaced and do not abut. Further, since the light irradiator 1A can directly irradiate the irradiated object W with light including ultraviolet rays from the light emitting device 10, there is no member interposed in the irradiation path as shown in FIG. Excellent.

  Note that the thickness, height, or cross-sectional shape of the elastic member 40A is limited as long as it is set so that the work site does not come into contact with the light emitting device 10 when the elastic member 40A is brought into contact with the work position when performing light irradiation. It is not something. Further, the elastic member 40A may have a configuration in which a transmission preventing film is provided on the surface so as not to transmit light including ultraviolet rays, or a configuration in which a transmission preventing member or a reflective material is mixed in the elastic member 40A. The elastic member 40A is configured not to transmit light, so that when the light is irradiated while being in contact with the work position, the elastic member can prevent light from leaking to the surroundings.

(Third embodiment)
As shown in FIGS. 6A and 6B, the support member 130 of the light irradiator 1B is formed flat up to the periphery, and a mounting surface 131 is installed at the center thereof. The elastic member 40 </ b> B prevents damage to the light emitting device 10 and the like, and a plurality of columns formed in a columnar shape are installed on the support member 130 or the mounting substrate 20. Here, the elastic member 40B includes a first elastic member 41B installed on the support member 130 around the mounting substrate 20 and a second elastic member 42B installed between the light emitting devices 10 on the mounting substrate. I have. The first elastic member 41B is formed to have a thickness and a height that does not bend when the operator presses the first elastic member 41B against the work surface. For example, four first elastic members 41B are arranged at equal intervals in the vertical and horizontal directions. The second elastic members 42 </ b> B are arranged at equal intervals around the light emitting device 10 at the center of the mounting substrate 20. The second elastic member 42B and the first elastic member 41B are formed of a member such as silicone that can transmit light and elastically deform to relieve the impact. The first elastic member 41B preferably has a columnar shape, and the second elastic member 42B preferably has a truncated cone shape.

  Further, the second elastic member 42B is set so that the height from the mounting substrate 20 is the same as that of the first elastic member 41B. The 1st elastic member 41B and the 2nd elastic member 42B are installed in the position used as the end part in the light irradiation direction from the light-emitting device 10 of the support member 130. FIG. Therefore, when the light irradiation work is performed, if the elastic member 40B is brought into contact with and pressed against the work position, the first elastic member 41B is elastically deformed (see the phantom line in FIG. 6) and contracts in the longitudinal direction to come into contact. The second elastic member 42 </ b> B is elastically deformed and bent in either direction and is in close contact with the contact position. The elastic member 40B has high adhesion to the irradiated object W, and can absorb the impact and prevent the light emitting device 10 from being damaged.

(Fourth embodiment)
As shown in FIGS. 7A and 7B, the light irradiator 1 </ b> C has a mounting substrate 20 mounted with the light emitting device 10 mounted on a mounting surface 131 installed at the center of the support member 130. The elastic member 40 </ b> C is formed in a sheet shape and is engaged with the support member and the mounting substrate 20 so as to cover the light emitting device 10. The elastic member 40C is formed of a sheet-like member such as silicone or synthetic silicone that can transmit light including ultraviolet rays from the light emitting device 10 and can be elastically deformed. The elastic member 40C is connected to at least one of the surface of the support member 130 or the surface of the mounting substrate by an adhesive or thermocompression bonding at a portion other than the position of the light emitting device 10 that faces the elastic member 40C.

  The elastic member 40C has a thickness that prevents the light emitting device 10 from being damaged even when pressed against the working position. The elastic member 40C is formed to have a uniform thickness of 2 to 5 mm, for example. Note that the elastic member 40 </ b> C may be configured by changing the thickness (thinning of the periphery) between a central range facing the light emitting device 10 and a peripheral range facing the support member 130. By changing the thickness of the elastic member 40C between the center and the periphery, it is possible to individually adjust the prevention of breakage of the light emitting device 10 and the ease of connection to the support member.

  In addition, in the elastic members 40 and 40C installed in the position facing the light-emitting device 10, as shown in FIG. 8, you may comprise so that the lens as a convex part may be provided in the position which faces the light-emitting device 10. As shown in FIG. . For example, as shown in FIG. 8, in the light irradiator 1D, the elastic member 40D has a convex portion 43D formed near the center of the surface thereof. The convex portion 43D of the elastic member 40 has a plano-convex lens function. The convex portion 43D is integrally formed of the same material as the elastic member 40D. The convex portion 43D is preferably disposed at a position facing the light emitting device 10, and is preferably installed so that the optical axis of the light emitting device 10 coincides with the optical axis of the convex portion 43D. According to the configuration of the elastic member 40 </ b> D, the irradiation object W can be efficiently irradiated with light including ultraviolet rays from the light emitting device 10. When the light irradiator 1D is in contact with the irradiation object W and irradiated with light, the elastic member of the sheet-like portion is elastically deformed for the height of the protrusion 43D protruding (see the phantom line in FIG. 8). By doing so, it is possible to irradiate the light by abutting against a wall surface or the like that is a flat irradiation object W. In addition, the convex portion 43D is preferably formed in the vicinity of the center of the light transmitting portion 41D that is positioned opposite the optical axis of the light emitting device 10.

  Furthermore, in the case of the light irradiator 1 having a configuration in which the elastic member 40 is provided so as to face the light irradiation direction of the light emitting device 10, as shown in FIG. 9, the space between the elastic member 40 and the light emitting device 10 is transparent. It is good also as a structure filled with members, such as functional resin 44E. In the light irradiator 1E, the presence of the translucent resin 44E between the elastic member 40 and the light emitting device 10 eliminates the portion where the air layer exists, prevents the occurrence of reflection, and reduces the light extraction efficiency. The cause can be suppressed. When filling the translucent resin 44E between the elastic member 40 and the light emitting device 10, the height of the frame edge portion 32 is formed so that the space between the elastic member 40 and the light emitting device 10 is small. It is preferable.

(Fifth embodiment)
Further, as shown in FIG. 10, the light irradiator 1 </ b> F may be configured such that the elastic member 40 </ b> F is provided in a frame shape continuously to the frame edge portion 32 of the support member 30. The elastic member 40F is provided so as to engage with the inner peripheral surface, the end surface, and the outer peripheral surface of the frame edge portion 32, and is installed at a position that is the endmost portion of the support member 30 in the light irradiation direction. Since the elastic member 40F does not exist at the position facing the light emitting device 10, the light including ultraviolet rays emitted from the light emitting device 10 can be efficiently sent to the irradiation object W. Further, when the light irradiation work is performed by bringing the light irradiator 1F into contact with the object to be irradiated W, the elastic member 40F contacts the object to be irradiated W and is elastically deformed and has excellent adhesion. Further, even when the light irradiator 1F is dropped, the elastic member 40F is installed at the extreme end, so that the elastic member 40F can reduce the impact and minimize the influence on the light emitting device 10 and the like. .

Further, in the light irradiators 1, 1 </ b> A to 1 </ b> C, 1 </ b> E, and 1 </ b> F illustrated in FIGS. 1 to 7, 9, and 10, the translucent member 12 provided so as to cover the concave portion of the package 11 is illustrated in FIG. 11. A lens configuration as shown may be used. That is, as shown in FIG. 11, in the light irradiators 1, 1 </ b> A to 1 </ b> C, 1 </ b> E, and 1 </ b> F, a light emitting device using a translucent member 120 provided in a concave opening of a package 11 in which the light emitting element 13 is installed as a planoconvex lens. There may be 100 configurations. In this case, light including ultraviolet rays from the light emitting element 13 can be irradiated to the deep part of the irradiation object W as parallel light. According to the light emitting device 100, a large amount of light including ultraviolet rays can be irradiated per unit area.
Further, the shape of the translucent member 120 may be a batwing lens shape. In this case, since the light distribution of the emitted light from the light emitting element 13 can be widened, a wide area can be cured by the light irradiator 1, and the working time can be shortened. However, other known lens shapes can be used as the shape of the translucent member 120.

Further, the shape of the support member, the shape of the handle, or the installation position may be configured as shown in FIGS. The elastic member 40 includes a light transmission part 41 and an engagement part 42, and the engagement part 42 is shown as a configuration that covers a part of the peripheral side surface of the support members 230 and 330.
As shown in FIG. 12, in the light irradiator 1 </ b> G, the outer appearance of the support member 230 may be a columnar shape, and the handles 50 </ b> A may be installed on the left and right sides of the peripheral side surface of the support member 230. The handle 50 </ b> A is attached to a peripheral side surface of the support member 230 with a member such as a C-shaped metal or resin by a joining means such as a screw or an adhesive. The handle 50 </ b> A is configured so that an operator can hold it with both hands, and thus the workability is not impaired even if the support member 230 is enlarged. In addition, since the handle 50A can be pressed with both hands in the second irradiation step for directly contacting the irradiated object, the light irradiator and the irradiated object can be sufficiently brought into close contact with each other.

  Furthermore, as shown in FIG. 13, the light irradiator 1 </ b> H may be configured such that the handle 50 </ b> B is installed on the rear end surface of the support member 230 having a cylindrical appearance. The handle 50 </ b> B is attached by fixing one end of the handle 50 </ b> B to the rear end surface of the support member 230 by the joining means described above using a member such as an L-shaped metal or resin. Thus, since the handle 50B is formed on the rear end face of the support member 23, the light irradiator and the object to be irradiated can be brought into close contact with each other with a strong force by pressing forward.

  As shown in FIG. 14, in the light irradiator 1 </ b> J, the frustoconical shape is formed from the circumferential side surface of the columnar shape in the support member 330 having such a shape that the outer shape of the cylindrical shape is continuous with the rear end of the columnar shape. It is good also as a structure which installs the handle 50C over a surrounding side surface. The handle 50C is attached by fixing a metal or resin member formed in a band shape to the outer peripheral surface of the support member 330 by the above-described joining means. As described above, the light irradiator 1J can be easily held with one hand, so that the work can be efficiently performed when the first irradiation is performed to irradiate the object from a distance.

  The handle 50 (50A, 50B, 50C) is not particularly limited because the arrangement and shape are set according to the size and shape of the support member 30 (130, 230, 330). Furthermore, in the handles 50A, 50B, and 50C, it is desirable that the switch is provided on the support members 230 and 330 side. Further, in FIGS. 12 to 14, the elastic member 40 is illustrated so as to use the configuration shown in FIG. 1, but may be the elastic members 40 </ b> A to 40 </ b> C having other configurations already described.

In addition, the light irradiator according to the embodiment of the present disclosure is not limited to the above-described configuration. For example, the surface of the mounting substrate 20 on which the light emitting device 10 is mounted, the mounting surface 31 of the support member, and the frame A light reflecting resin may be applied to the inner surface of the edge portion 32 in order to increase the light irradiation efficiency.
Furthermore, the elastic member 40A may have an annular shape regardless of the shape of the mounting substrate 20 or the mounting surface 131, and the cross-sectional shape thereof is not particularly limited to a rectangle or a triangle. The elastic member 40 </ b> A may be installed on the periphery of the mounting substrate 20. Furthermore, although the elastic members 40A and 40F have been described as a continuous frame configuration, the elastic members 40A and 40F may be configured to intermittently surround the mounting substrate with elastic members.

Furthermore, the elastic member 40B is not particularly limited as long as it can protect the light irradiation and the light emitting device 10 such as the shape, number, arrangement, and size of the pillars. The elastic member 40B may be installed only on the mounting surface 131, or may be installed only on the mounting substrate 20.
The elastic members 40, 40A to 40F are set in size, softness, and the like so that when elastically deformed to the maximum, the elastic members 40, 40A to 40F are positioned higher (endmost part) than the light emitting device 10 of the mounting substrate 20. ing.
The light emitting element 13 may be directly mounted on the mounting region 21 of the mounting substrate 20 without being provided in the package 11. When the light emitting element 13 is directly mounted on the mounting substrate 20, it is preferable that a light transmissive resin is provided so as to cover the mounted light emitting element 13.

  The light irradiator which concerns on embodiment of this indication can be used with respect to the to-be-irradiated object containing the photocuring material hardened | cured by irradiating the light containing an ultraviolet-ray. The light irradiator can be used for, for example, a coating material, an adhesive material, a nail coating material, and the like used for cars, electrical appliances, houses, nails, and the like.

DESCRIPTION OF SYMBOLS 1,1A-1J Light irradiator 10 Light-emitting device 11 Package 12 Translucent member 13 Light-emitting element 20 Mounting board 21 Mounting area 30, 130, 230, 330 Support member 31, 131 Mounting surface 32 Frame edge 33 Support housing 40, 40A, 40B, 40C, 40D, 40F Elastic member 41 Light transmitting portion 41B First elastic member 42 Engaging portion 42B Second elastic member 43D Protruding portion 50, 50A, 50B, 50C Handle 51 Switch C Power cable G Power supply device S Light irradiation device W Object to be irradiated

Claims (11)

A light emitting device that emits light including ultraviolet light, a mounting substrate on which the light emitting device is mounted, a support member that supports the mounting substrate on a mounting surface formed on one side, and at least one of the support member and the mounting substrate Provided with an elastic member,
The elastic member is a light irradiator provided at the end in the light irradiation direction.   2. The light irradiator according to claim 1, wherein the elastic member has a translucent sheet shape and is provided on the support member or the mounting substrate so as to face a light emitting element of the light emitting device. The support member includes a frame edge on the periphery of the mounting surface in the light irradiation direction,
The light irradiator according to claim 1, wherein the elastic member is formed in a bottomed cylindrical shape, and is provided to face the light emitting device by engaging with the frame edge portion.   The light irradiator according to claim 2 or 3, wherein a translucent resin is provided between the elastic member and the light emitting device.   5. The light irradiator according to claim 2, wherein the elastic member has a convex portion formed on a surface exposed to the outside.   The light irradiator according to claim 5, wherein the convex portion is formed near the center of the surface of the elastic member.   2. The light irradiator according to claim 1, wherein the elastic member is provided on the support member or the mounting substrate in a frame shape continuous along a peripheral edge of the light emitting device or intermittently in a frame shape.   2. The light irradiator according to claim 1, wherein the elastic member is provided on the support member or the mounting substrate in a columnar shape apart from the light emitting device. The support member includes a frame edge on the periphery of the mounting surface in the light irradiation direction,
2. The light irradiator according to claim 1, wherein the elastic member is provided in a continuous frame shape or intermittently in a frame shape at a position that is the end of the frame edge in the light irradiation direction.   The power supply cable which supplies the electric power from a power supply to the said light-emitting device is connected to the said support member or the said handle with the handle which protrudes from the outer surface except the said attachment surface. The light irradiator according to claim 9. The light irradiator according to any one of claims 1 to 10,
A first irradiating step of irradiating light with the light irradiator spaced apart from an object to be irradiated;
After the first irradiation step, a light irradiation method including a second irradiation step of irradiating light while bringing the elastic member of the light irradiator into contact with the irradiated object.

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