JPS61206105A - Irradiator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an irradiation tool that irradiates an object with light from a light source.

[Prior art]

Among the above-mentioned irradiation devices, there is an ultraviolet irradiation device that uses a high-pressure mercury lamp as the light source.◎ High-pressure mercury lamps take about 50 minutes to stabilize after being turned on, or until they are turned on again after being turned off.
It takes about 10 minutes, and in addition, with modern high-pressure mercury lamps, the ultraviolet rays and heat radiation during lighting are intense, and if the irradiated object is film, paper, etc., if it is lit in the same place for a long time, it may cause thermal deformation, and even K. may even cause burnout. Therefore, when the object to be irradiated is a continuous bud-falling object, it is recommended to use an irradiator with a shutter so that the irradiation can be started and stopped instantaneously at any time while the high-pressure mercury lamp is still lit. Common.

Figures 5, 6, and 7 are cross-sectional views of conventionally used shutter-type irradiation tools as described above.
j), 100 is a high pressure mercury lamp, 200 is a reflector, 301,
302 and 303 are shutters, respectively.

FIG. 5 shows a planar shutter type irradiation tool, in which a planar shutter 301 moves left and right to open and close as shown by solid lines and dotted lines.

FIG. 6 shows an irradiation device using a door shutter type, in which a top door shutter 302 opens and closes in a top pillar shape as shown by solid lines and dotted lines.

FIG. 7 shows a rotary shutter type irradiation tool, in which a rotary shutter 303 rotates to open and close as shown by solid lines and dotted lines.

Note that in FIGS. 5, 6, and 7, the drive system and cooling system of the reflector 200 are omitted.

As described above, in the conventional shutter-type irradiation tool, a shutter that opens and closes exists separately from the reflector.

[Problem that the invention seeks to solve]

However, providing a shutter separately from the reflector 200 increases the overall dimensions of the control device, and when the shutter is closed, the high-pressure mercury lamp 100 is in a sealed state between the reflector 200 and the shutter. Therefore, there was a problem that the lifespan was shortened.

[Means for solving problems]

In order to solve the above problems, the present invention functions as a reflector for the light source during irradiation, and when not in contrast.
There is provided an irradiation tool characterized by having means that functions as a light source shielding device by being divided and rotating each divided portion.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described using FIGS. 1 to 4.

FIG. 1 is a front view of the irradiation tool of the present invention, FIG. 2 is a plan sectional view, and FIGS. 3 and 4 are side sectional views.

The high-pressure mercury lamp 1 is located in a reflector 2, as in the conventional example, and the reflector 2 is attached to a fixture 5 provided on a base 4 at the lower part of the irradiation box 3. The reflector 2 is held by a rotating bearing 7 having a rotational drive source 6, and also by a rotating shaft 10 directly connected to a reflector receiver 9 having a gear 8 that divides the rotational force into left and right parts.

With the above mechanism, as shown in Fig. 3, the reflector 2
is divided into two parts by the rotary drive source 6, and can be opened and closed in the direction of the irradiation surface (downward in Figure 3) (the state of the reflector when closed is indicated by 2'), and also serves as a shutter (S-shield). be able to.

In addition, the structure of rotating the light source is simple and space-saving, and the rotating drive can be moved left and right with respect to the center of the lamp. It has the advantage of being easy to maintain because it is separated.

Note that when the reflector 2 is closed (position 2'), the energy of the high-pressure mercury lamp 1 is irradiated toward the ceiling of the irradiation box 3, but the energy is reflected to prevent it from being reflected on the irradiation surface side and for cooling. A prevention plate 11 is attached.

Further, a cooling box 12 equipped with an air-cooling fan and the like is provided above the irradiation box 3 to cool the high-pressure mercury lamp 1 and the irradiation box 3. For cooling the high pressure mercury lamp 1, in addition to using an air cooling fan as described above, the high pressure mercury lamp 1 and the reflector 2 are used.
Various methods can be considered, such as air cooling by supplying or exhausting air to the reflector 2, or water cooling by a water cooling panel on the back surface of the reflector 2, etc.

Generally, the output of the high-pressure mercury lamp is halved while the shutter of the irradiator is closed for energy saving and cooling purposes, but in the present application, the output is also halved when the reflector 2 is closed.

Further, as the rotational drive source 6, an electrical forward/reverse motor, a pressurized air forward/reverse motor, or the like can be applied.

Furthermore, although the shape of the reflector 2 is circular in this embodiment, it is clear that it may be an ellipsoid, a paraboloid, a hyperboloid, or a quadrilateral.

Further, in the above embodiments, the light source is limited to a high-pressure mercury lamp, but it is clear that the present invention is also applicable to an irradiation device using a light source in the visible wavelength range.

〔Effect of the invention〕

As explained above, the irradiation tool of the present invention has a simpler structure than the conventional irradiation tool with a shutter, and
It is also compact in size, and conventionally the light source is in a "sealed" state when the shutter is closed, but in the present invention, it is in a "6" open state like when irradiating, which is good for the life of the light source. There are benefits that bring results.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are a front view and a plan sectional view of the irradiation tool of the present invention, respectively, and FIGS. 3 and 4 are side sectional views. FIG. 5, FIG. 6, and FIG. 7 are simplified cross-sectional views of conventional irradiation tools. 1: High pressure mercury lamp, 2: Reflector. Agent Patent Attorney Sekihira Yamashita Figure 1 Figure 2 Figure 3 Figure 4 Figure 5t Figure 6 1==〒 Pressure Figure 7 η [

Claims (2)

[Claims] (1) An irradiation device characterized by having means that functions as a reflector for the light source during irradiation, and functions as a shield for the light source by dividing and rotating each divided portion when not irradiating. (2) The irradiation tool according to claim 1, characterized in that a high-pressure mercury lamp is used as the light source.