JPH1073784A - Ultraviolet irradiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size over the entire part of a device and to average the irradiation quantity to a work with UV rays by arranging an incident angle regulating device which has many slits and has a black surface in front of a UV light source and constituting this device so as to oscillate in the longitudinal direction of the work. SOLUTION: The incident angle resulting device 15 which has the many slits and constitutes the black surface of the wall surfaces constituting the respective slits is arranged in front of the UV light source 13. A light transmission device is constituted to oscillate at about 20mm in the stage of irradiating the work 17 with the UV rays. If the work 17, such as film, is transported by a converter and is irradiated with the UV rays from the slits of the light transmission device at this time, the surface of the work 17 is irradiated with the direct projection light within about 5 deg.. Furthermore, the incident angle regulating device 15 rolls in the entire part of the work 17 and, therefore, the formation of shades on the surface of the work 17 does not arise and the entire part is uniformly irradiated with the UV rays. The uniform processing of the surface of the film is thus possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement in an ultraviolet irradiation device.

[0002]

2. Description of the Related Art Conventionally, for example, in a polarizing film or a mask used for a cathode ray tube of a television,
The film is irradiated with parallel ultraviolet rays to form vertical stripes, and light is not transmitted from a part irradiated with the ultraviolet rays, and light is transmitted from a part not irradiated with the ultraviolet rays.
As the ultraviolet irradiation device, for example, as shown in FIG.
The light from the light source 2 disposed inside the reflector 1 is projected to the facing lens group 3 and further projected to the reflecting mirror 4 for collecting the light from the lens group 3, and the same light is collected. In this case, the work 5 is irradiated with linear light from the reflecting mirror 4 for performing the operation, and parallel light is used as much as possible.

[0003]

According to the above-described ultraviolet irradiation apparatus, the height of the entire apparatus is reduced due to the use of reflected light.
There is a disadvantage that the size is about one meter and the size is large, and there is a disadvantage that the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is possible to reduce the size of the entire apparatus, average the amount of ultraviolet irradiation to a work, and efficiently use ultraviolet light. An object is to provide an ultraviolet curing device.

[0005]

Means for Solving the Problems The present invention has the following structure to solve the above-mentioned problems. That is, the first aspect of the present invention relates to an ultraviolet irradiation device configured to be capable of irradiating a work in front of an ultraviolet light source with ultraviolet light. Further, in front of the ultraviolet light source, an incident angle regulating device having a number of slits and having a black surface is arranged. The incident angle regulating device is configured to swing in the longitudinal direction of the work. According to the configuration, the work surface is irradiated with ultraviolet rays on average.

According to a second aspect of the present invention, in the apparatus according to the first aspect, the incident angle regulating device is provided with a horizontal slit near the center in the vertical direction, and the heat is radiated from the horizontal slit and the work is heated by high heat. It is configured not to be affected.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An ultraviolet irradiation apparatus according to the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 11 denotes an ultraviolet irradiation device main body, which is formed, for example, in a box shape. Reference numeral 12 denotes a light source box supported by the ultraviolet irradiation device main body 11, and is configured to be vertically movable with respect to the ultraviolet irradiation device main body 11. Reference numeral 13 denotes an ultraviolet light source mounted inside the light source box 12, which is constituted by using, for example, a 17 kilowatt high-pressure discharge lamp. Reference numeral 14 denotes a reflecting mirror mounted inside the light source box 12.

Reference numeral 15 denotes an incident angle regulating device which is disposed in front of a light source of an ultraviolet light source, has a large number of slits,
The surface of the wall surface constituting each slit is configured in black. The interval between the slits is, for example, about 8 mm. The incident angle regulating device 15 has a horizontal slit 16 at the middle in the vertical direction. High heat is discharged to the outside of the light transmitting body by the horizontal slit 16. In the stage of irradiating the work with the ultraviolet light, the light transmitting device is required
It is configured to swing about 0 mm. 1
Reference numeral 7 denotes a work, for example, a plastic film, which is a polarizing film requiring parallel light or a film provided on the surface of a high-quality CRT.

Next, the irradiation of the workpiece with ultraviolet rays in the above-described ultraviolet irradiation apparatus will be described. When a work such as a film is conveyed by a conveyor and ultraviolet light is irradiated from a slit of the light transmitting device, direct light within 5 degrees is irradiated on the surface of the work. Further, since the incident angle regulating device sways in all of the work, the entire surface of the work is uniformly irradiated with ultraviolet rays without shadows,
The surface of the film can be processed uniformly, and the characteristics of the film can be kept constant. That is, the incident angle of the ultraviolet rays in the direction parallel to the direct direction of the light source can be restricted to a predetermined range, so that the performance of the work can be improved. In addition, the heat generated from the light source causes the upper portion of the incident angle regulating device to have a high temperature of about 120 degrees. Taking about 35 degrees, it is possible to prevent a thermal adverse effect on the work. When the work is a polarizing film or a film provided on the surface of a high-quality cathode ray tube, the total amount of ultraviolet rays is 4%.
It is about 0 to 50 mJ / cm ² . The total amount of ultraviolet light can be changed by changing the height of the light source, the conveyor speed, and the input of the light source.

[0010]

According to the first aspect of the present invention, there is provided a special effect that it is possible to reduce the size of the workpiece, to average the amount of ultraviolet rays applied to the work, and to efficiently use the ultraviolet rays. Have.

According to the second aspect of the present invention,
Despite the small size of the device, it has a heat radiation effect, so there is no thermal effect on the work, and it has a special effect of efficiently irradiating ultraviolet rays.

[Brief description of the drawings]

FIG. 1 is a side view of an ultraviolet irradiation device according to the present invention.

FIG. 2 is a front view of the ultraviolet irradiation device of the present invention.

FIG. 3 is a side view of a conventional ultraviolet irradiation device.

[Description of Signs] 11 Ultraviolet irradiation device main body 12 Light source box 13 Ultraviolet light source 14 Reflecting mirror 15 Incident angle regulating device 16 Horizontal slit 17 Work

Claims (2)

[Claims] An ultraviolet irradiation device configured to irradiate a work in front of an ultraviolet light source with ultraviolet light.
In front of the ultraviolet light source, an incident angle regulating device having a number of slits and having a black surface is arranged, and the incident angle regulating device is configured to swing in the longitudinal direction of the workpiece. An ultraviolet irradiation device, characterized in that: 2. An ultraviolet irradiation apparatus according to claim 1, wherein said incident angle regulating device is provided with a horizontal slit provided in the vicinity of the middle in the vertical direction.