JP6558523B2 - UV irradiation equipment - Google Patents

Description

  The present invention relates to a portable ultraviolet irradiation device that promotes curing of an ultraviolet curable resin using ultraviolet rays emitted from an LED.

LEDs are used in many fields from the viewpoint of energy saving, and one of them is an LED that irradiates ultraviolet rays (hereinafter referred to as an ultraviolet LED) as a curing means of an ultraviolet curable resin that is cured by ultraviolet irradiation. It is being used (for example, Patent Document 1).
The ultraviolet irradiation apparatus described in Patent Document 1 is used when curing a special resin (ultraviolet curable resin) used for nail decoration or the like, and has portability.

JP 2005-118207 A

However, the ultraviolet irradiation apparatus described in Patent Document 1 cures the special resin used for the nail decoration by the irradiated object, and cannot be applied to the curing means of the ultraviolet curable resin used for industrial use. .
In view of the above problems, an object of the present invention is to provide an ultraviolet irradiation apparatus that can be applied to curing means for ultraviolet curable resins used for industrial use, and can also be applied to curing ultraviolet curable resins outdoors. It is.

An ultraviolet irradiation apparatus according to the present invention includes a rod-shaped handle portion, a casing portion provided at one end of the handle portion and having an opening window, and irradiation that emits ultraviolet rays from the opening window. A power supply unit disposed in the housing unit and releasing heat generated during ultraviolet irradiation of the irradiation unit, a power supply unit provided at the other end of the handle unit, and receiving power from the power supply unit A drive circuit that drives the irradiation unit, and the irradiation unit includes a plurality of LEDs, and the power supply unit uses a rechargeable or replaceable battery as a power source.
Moreover, the ultraviolet irradiation device may be provided with a reflection unit that reflects the ultraviolet rays emitted from the irradiation unit forward.

  The ultraviolet irradiation apparatus according to the present invention can be applied to industrial use because the irradiation part is composed of a plurality of LEDs, and can also be applied to outdoor use because the power supply part is a chargeable / dischargeable storage battery. .

It is a front view of the ultraviolet irradiation device concerning a 1st embodiment. It is a side view of the ultraviolet irradiation device concerning a 1st embodiment. It is a disassembled perspective view of the ultraviolet irradiation device concerning a 1st embodiment. It is a perspective view of the ultraviolet irradiation device concerning a 2nd embodiment. It is an experimental result which shows the effect of a reflection part.

  Hereinafter, embodiments of an ultraviolet irradiation device according to one aspect of the present invention will be described with reference to the drawings.

<First Embodiment>
1. Overview of Ultraviolet Irradiation Device As shown in FIG. 1, the ultraviolet irradiation device 1 is disposed in a housing portion 5, a handle portion 3 held by an operator, a case portion 5 provided at one end of the handle portion 3, and the case portion 5. Moreover, it has the irradiation part 7 which radiate | emits an ultraviolet-ray, the power supply part 9 provided in the other end of the handle | steering-wheel part 3, and the drive circuit 11 (refer FIG. 3) which receives the electric power from the power supply part 9 and drives the irradiation part 7. FIG.
Here, the direction in which ultraviolet rays are emitted from the irradiation unit 7 (the main emission direction) is the front side, and the back side of the irradiation unit 7 is the rear side.
Moreover, the irradiation part 7 is comprised by LED13. The ultraviolet irradiation device 1 includes a heat radiating unit 15 that releases heat of the irradiation unit 7 during irradiation in addition to the handle unit 3, the case unit 5, the irradiation unit 7, the power supply unit 9, and the drive circuit 11. Have.

2. Configuration of each part (1) Handle part 3
The handle portion 3 has a hollow rod shape (tubular shape). A cable (not shown) for connecting the power supply unit 9 and the drive circuit 11 is disposed in the internal space. As shown in FIGS. 1 and 2, the cross-sectional shape of the handle portion 3 is long in the front-rear direction. Here, the cross-sectional shape is a rectangular shape with rounded corners. A switch 20 for operating the light emission drive of the LED 13 is provided on the rear surface of the handle portion 3.

When the switch 20 is turned “ON”, ultraviolet rays are emitted from the LED 13. In addition, a slide type, a button type, etc. can be utilized for a switch.
One end of the handle portion 3 is a mounting area 21 of the housing portion 5. The mounting region 21 is configured such that the left and right side surfaces are parallel when the handle portion 3 is viewed from the front. Each side surface of the mounting region 21 has a fixed recess at the center. The fixed recess has a circular cross section perpendicular to the recess direction.

One end portion (mounting region 21) of the handle portion 3 is provided with a handle side adjusting means that constitutes a part of an angle adjusting means that allows the posture (orientation) of the housing portion 5 to be changed. The handle-side adjusting means has a retractable body that is provided so as to be able to appear and retract in a recess formed away from the center of the fixed recess, and a maintenance body that maintains the retractable body in the extended state. In addition, the front-end | tip part of the intruding body is hemispherical. Here, a compression spring is used as the maintenance body. The maintenance body is arranged in a recess in which the intruding body is arranged, and applies a load in the exit direction to the intruding body. In addition, the front-end | tip part of the intruding body engages with the positioning dent of the below-mentioned housing | casing side adjustment means.
As shown in FIG. 3, the other end portion of the handle portion 3 protrudes in a direction orthogonal to the central axis of the handle portion 3 and forms a cover region 23 that covers the upper portion of the power supply portion 9. The cover area 23 is also a mounting area where the power supply unit 9 is detachably mounted.

(2) Housing part 5
The casing 5 has a box shape and includes a casing body 25 and a lid 27. As shown in FIG. 3, the housing body 25 includes a front plate 31 having an opening window 29 in the center, a rear plate 35 having an opening 33 in the center, a lower end of the front plate 31, and a lower end of the rear plate 35. And a bottom plate 37 for connecting the two. In other words, the housing body 25 has a box shape in which three surfaces of the upper surface and the left and right side surfaces are opened.
The lid 27 covers the open part of the housing body 25. The lid 27 is formed by, for example, bending (bending) a band plate, and has a “U” shape as a whole. The lid 27 is formed by integrating a top plate 41 and a pair of left and right side plates 43 and 45.

The front plate 31, the rear plate 35 and the bottom plate 37 constituting the housing main body 25 have inner flanges 47 whose left and right ends project to the side surface side. Thereby, when the lid body 27 is coupled to the housing body 25, the inner flange 47 of the housing body 25 and the pair of side plates 43 and 45 of the lid body 27 come into contact with each other, and the housing body 25 and the lid body 27 The gap is prevented from being generated.
The casing unit 5 has mounting means for mounting on the handle unit 3. Here, the mounting means is composed of a pair of gripping pieces 51 for gripping the mounting region 21 of the handle portion 3. As shown in FIG. 1, the grip piece 51 extends downward from the bottom plate 37 of the housing body 25 so as to grip (grip) the mounting region 21 of the handle portion 3 from the left-right direction.

Each of the pair of gripping pieces 51 has a fixed protrusion (not shown) protruding toward the other gripping piece 51. The fixed convex portion has a circular shape in a cross section orthogonal to the protruding direction. The fixed convex portion is rotatably fitted in the fixed concave portion of the handle portion 3.
Each of the pair of grip pieces 51 is provided with a housing side adjusting means that constitutes a part of the angle adjusting means. The housing side adjusting means has a plurality of posture determining recesses provided at intervals on a virtual circumference having a predetermined radius with the center of the fixed convex portion as a reference. The predetermined radius here corresponds to the distance between the center of the fixed concave portion on the handle side and the center of the protruding and projecting body. In addition, the angle between the posture determination recesses adjacent on the virtual circumference is 45 [°], and for example, three are provided.

As shown in FIG. 3, the housing unit 5 houses a main housing region 53 in which the LED 13 and the heat radiating unit 15 are housed, and a fan that is one configuration of the heat radiating unit 15 and a drive circuit 11 for driving the LED 13. A sub-accommodating area 55 is provided inside.
Note that the area other than the sub-accommodating area 55 in the housing 5 is the main accommodating area 53. Further, the lead lines of the main storage area 53 and the sub storage area 55 are indicated by arrows in order to distinguish them from the front plate 31 and the like constituting the storage area.

When the front surface of the housing part 5 is viewed from the front, the sub-accommodating area 55 includes one side edge on the left and right sides of the opening window 29 (here, the side edge visible on the right side) and one side edge of the front plate 31. (Here, it is the end that can be seen on the right side.)
At least one of the front plate 31 and the rear plate 35 is provided with a partition plate 57 for partitioning the main storage region 53 and the sub storage region 55. Here, the partition plate 57 is the rear plate 35 and is provided on one of the left and right sides of the left and right side edges of the opening. The length of the partition plate 57 in the front-rear direction is a length capable of supporting the drive circuit 11 disposed between the inner plate of the partition plate 57 and the front plate 31 and the inner plate of the partition plate 57 and the rear plate 35.

(3) Irradiation unit 7
The irradiation unit 7 includes an LED 13 that emits ultraviolet rays. Specifically, the LED 13 emits light having a peak wavelength in the range of 365 [nm] to 405 [nm]. The LED 13 is provided as a module type. That is, the irradiation unit 7 includes the LED module 59. The LED module 59 includes a plurality of LEDs 13 and a substrate 61 on which these are mounted.
In this example, there are two LED modules 59, and 24 LEDs 13 are mounted on one LED module. The 24 LEDs 13 are connected in parallel in two series connection groups in which 12 LEDs are connected in series.
As shown in FIG. 1, the substrate 61 has a rectangular shape, and the LED module 59 is arranged in contact with the heat sink 65 so that the longitudinal direction of the substrate 61 is the left-right direction.

(4) Power supply unit 9
The power supply unit 9 is composed of a chargeable / dischargeable rechargeable battery. Here, the 12V type is also used as a rechargeable battery for general tools. The rechargeable battery is a nickel metal hydride rechargeable battery.
As shown in FIG. 3, the power supply unit 9 includes a rectangular parallelepiped battery main body 69 and connection terminals 71 protruding upward from the upper surface of the battery main body 69. The power supply unit 9 performs charging / discharging through the connection terminal 71. The power supply unit 9 is detachably attached to the cover region 23 at the lower end of the handle unit 3. Here, engaging means is employed for mounting.

(5) Heat radiation part 15
The heat radiating part 15 has at least one of the heat sink 65 and the fan 73. Here, the heat dissipating unit 15 includes a heat sink 65 and a fan 73.
The heat sink 65 has a rectangular parallelepiped shape. The heat sink 65 includes a base plate and a plurality of fins provided on the rear surface of the base plate. In FIG. 3, the heat sink 65 is shown as a simple rectangular parallelepiped.
The heat sink 65 mounts the LED module 59 on the front surface. This releases (conducts) heat generated during UV irradiation of the LED 13 backward.
The fan 73 blows air from the inside (the heat sink side) of the housing unit 5 to the outside. Thereby, the heat of the heat sink 65 is transmitted to the air, and the transmitted air is sent out of the housing unit 5 by the fan 73.

(6) Drive circuit 11
The drive circuit 11 supplies drive power (DC power) to the LED 13. The drive circuit 11 in the first embodiment also supplies drive power (DC power) to the fan 73. Here, the LED 13 and the fan 73 are connected in parallel, and power is directly supplied to the LED 13 and the fan 73 from the power supply unit 9.

(7) Others In the first embodiment, the translucent cover 74 is provided in the opening window 29 on the front surface of the housing unit 5. The translucent cover 74 mainly has a function of protecting the LED 13. In 1st Embodiment, it has the sensor 75 which detects the temperature of the to-be-irradiated body and the electric power supply stop circuit which stops the electric power supply to LED13, if the detection result from the sensor 75 exceeds a threshold value. Yes.
Thereby, the ultraviolet irradiation can be stopped when the temperature of the ultraviolet curable resin, which is an object to be irradiated, is detected and is in a cured state. The power supply stop circuit is incorporated in the drive circuit 11.

<Second Embodiment>
Although the ultraviolet irradiation device 1 according to the first embodiment does not include the reflection unit that reflects the light emitted from the LED to the irradiated object side, the ultraviolet irradiation device 1 may include a reflection unit. An ultraviolet irradiation device provided with a reflecting part will be described as a second embodiment. Here, the ultraviolet irradiation device described in the first embodiment provided with a reflecting portion will be described as the ultraviolet irradiation device of the second embodiment. For this reason, the same structure as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.
FIG. 4 is a perspective view of the ultraviolet irradiation apparatus according to the second embodiment.
The ultraviolet irradiation device 101 includes a handle unit 3, a housing unit 5, an irradiation unit (7), a power supply unit 9, a drive circuit (11), and a heat radiation unit (15), and further includes a reflection unit 103.
The reflecting portion 103 is detachably attached to the front plate (31) of the housing portion 5. The reflecting portion 103 has a cylindrical shape, and the cross-sectional shape thereof is the same as the shape of the opening window (29) provided on the front plate (31). Here, a pair of side plates, an upper plate, and a lower plate are provided. That is, the cross-sectional shape is rectangular.

Here, the reflecting portion 103 has a so-called “protruding” shape in which the area in the cross section gradually increases as the distance from the housing portion 5 increases. This case is effective when the irradiated object is larger than the opening window (29) of the front plate (31). Note that the reflecting portion may have a so-called tapered shape in which the area in the cross section gradually decreases as the distance from the housing portion increases. This case is effective when the irradiated object is smaller than the opening window of the front plate.
A surface corresponding to the inner surfaces of the pair of side plates and the upper and lower plates is a reflecting surface 105. Specifically, the cylindrical inner surface is mirror-finished or a reflective film is formed on the inner surface.

FIG. 5 is an experimental result showing the effect of the reflection portion.
The implementation product 1 in the figure is the distance d [cm] from the irradiation unit 7 (LED 13) and the light intensity E [mW / cm ² of ultraviolet rays at the distance in the ultraviolet irradiation apparatus 1 according to the first embodiment. ] Is shown. An implementation product 2 in the figure is an irradiation unit 7 (LED 13) in an ultraviolet irradiation device 101 according to the second embodiment (an ultraviolet irradiation device in which the reflection unit 103 is provided in the ultraviolet irradiation device 1 according to the first embodiment). The relationship between the distance d from the distance and the light intensity E of the ultraviolet rays at that distance is shown.

The reflecting portion 103 has a cylindrical shape with a square cross section in accordance with the shape of the central opening window 29 of the housing portion 5. One side of the square is 50 [mm], and the length (height) of the reflecting portion 103 in the axial direction is 50 [mm]. In the implementation product 2, since there is the reflecting portion 103, the measured values at a distance d of 8.4 [cm] to 25 [cm] are connected.
As can be seen from FIG. 5, the light intensity E is higher when the reflecting portion 103 is provided (the product 2). For example, when the reflecting portion 103 is brought close to the object to be cured, the distance d is 5.3 [cm]. In this case, the light intensity E of the implementation product 1 is 115 [mW / cm ² ], the light intensity E of the implementation product 2 is 510 [mW / cm ² ], and the implementation product 2 is approximately four times as light as the implementation product 1. It will have strength E. The light intensity at the distance d of 5.3 [cm] in the product 2 is a calculated value.

<Modification>
The image forming apparatus according to the present invention has been described by taking the first embodiment and the second embodiment as examples. However, the present invention is not limited to the above-described embodiments. There may be. Further, the embodiment may be a combination of the modified example and the modified examples.
In addition, examples that are not described in the embodiments and modifications, and design changes that do not depart from the gist are also included in the present invention.

1. Irradiation unit The LEDs constituting the irradiation unit are arranged in a matrix of 4 rows and 12 columns as a whole, but may be arranged in a matrix of another form. For example, it may be arranged in a circular or polygonal ring (including single and multiple).
Although the number of types of LEDs (types of peak wavelengths) constituting the irradiation unit is not particularly described, there may be one type or a plurality of types. In the case of a plurality of types, it is possible to deal with various ultraviolet curable resins by having a changeover switch so as to distinguish and irradiate each type.

2. Opening window The opening window on the front surface of the housing portion has a rectangular shape corresponding to the LED arrangement shape. For example, even if the LED arrangement shape is a matrix shape, the opening window may be a circular shape. . Moreover, even if LED arrangement | positioning shape is circular shape and a polygonal cyclic | annular form, an opening may be made into a rectangular shape (a square is included), and it is good also as an elliptical shape (a circle and an ellipse are included).

3. Power Supply Unit The power supply unit uses a rechargeable battery that can be charged and discharged. For example, the power supply unit may be composed of a battery dedicated to discharging (for example, a dry battery) and a battery box that accommodates these batteries in a replaceable manner. In this case, even if there is no battery in the battery box, it corresponds to an example of the “power supply unit” of the present invention.
Moreover, you may make it selectively use the adapter connected with a commercial power source as a power supply part. Thereby, continuous use for a long time becomes possible.

DESCRIPTION OF SYMBOLS 1 Ultraviolet irradiation device 3 Handle part 5 Case part 7 Irradiation part 9 Power supply part 11 Drive circuit 13 LED

Claims (2)

A rod-like handle portion long in the first direction ;
A housing portion provided at one end of the handle portion and having an opening in a front plate and a rear plate ;
An irradiation unit arranged in the housing unit and emitting ultraviolet rays from the opening of the front plate ;
A heat dissipating part that is arranged in the housing part and emits heat generated during ultraviolet irradiation of the irradiation part;
A power source provided at the other end of the handle part;
A drive circuit disposed in the housing unit and receiving power from the power supply unit to drive at least the irradiation unit;
The irradiation part is composed of a plurality of SMD type LEDs and a substrate on which the LEDs are mounted on the front surface .
The heat dissipating part has a heat sink that is mounted on the front surface in contact with the substrate, and a fan that is provided on the rear side of the heat sink,
The housing includes a main housing region that houses the irradiation unit and the heat radiating portion in the front-rear direction, and a sub housing region that houses the drive circuit in a second direction orthogonal to the first direction and the front-rear direction. Have
The sub-accommodating region is located between the opening of the front plate of the housing portion and the one end in the second direction of the housing portion when the housing portion is viewed from the front side,
The fan sends out the air in the casing to the outside of the casing through the opening of the rear plate,
The power supply unit is an ultraviolet irradiation device that uses a chargeable / dischargeable battery or a replaceable battery as a power supply , or is connected to a commercial power supply via an adapter . The LED emits ultraviolet light for curing the ultraviolet curable resin,
The housing portion has a box shape, and a housing body in which a surface opposite to the handle portion in the first direction and surfaces on both sides in the second direction are opened, and the housing body is opened. A lid that covers the surface,
The housing main body has an inner flange that protrudes toward the side surface of the housing portion on the front plate, the rear plate, and the bottom plate, and at one end of the opening in the second direction. A partition plate arranged along and extending in the front-rear direction to support the drive circuit on at least one of the front plate and the rear plate,
The lid body is coupled to the housing body in a state in which the side plate of the lid body is in contact with the outer surface of the inner casing of the housing body,
The ultraviolet irradiation device according to claim 1, wherein a reflection portion that reflects the ultraviolet rays emitted from the irradiation portion forward is provided in the housing portion.

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