JPS5849435A - Light irradiating device - Google Patents

Abstract

PURPOSE:To transfer heat conducted to a case by lamp irradiation, to a reflecting body, and to restrain a heat radiation to the outside, by interposing a heat conducting layer, consisting of metallic filaments having high heat conductivity, between the reflecting body and the case. CONSTITUTION:A light irradiated from a lamp 1 irradiates a body 7 to be irradiated moving with a transferring body 8, to perform a prescribed treatment, but a part of the light irradiates both side surfaces 5a of a case 5. Accordingly the temperature of irradiated part rises and the temperature of an upper surface part 5b is elevated by its conducted heat, thereby heating the whole case 5 to high temperature. A heat conducting layer 6 is, however, interposed between the case 5 and a reflecting body 2, and then the conducted heat of the case 5 is rapidly transferred to the reflecting body 2 by a large number of metallic filaments which form the heat conducting layer 6, and the heat is exchanged with cooling water 4 flowing through the inside of the body 2; therefore, the heat radiation to the outside of the case 5 is well inhibited.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a light irradiation device that can suppress the rise in case temperature due to conduction heat.

Conventionally, in this type of light irradiation device, heat from the lamp @
The object to be irradiated is subjected to heat treatment, but since the lamp used for light irradiation becomes extremely hot during use, cooling water is passed through the inside of the reflector that covers the lamp to cool the lamp. Although pressure is applied to prevent heat dissipation to the outside through the installed case, the area near where the cooling water flows can be cooled, but the side of the case away from the reflector becomes hot due to heat transfer. .

That is, the heat rays generated when the lamp is irradiated also heat the side surfaces of the case located below the lamp, and the conductive heat causes the temperature of the entire case to rise abnormally.

The present invention has been made to eliminate the above-mentioned drawbacks. 1. A heat transfer layer made of metal wires with high thermal conductivity is placed between the reflector and the case, so that the conduction heat to the case due to lamp irradiation is reduced. It is an object of the present invention to provide a light irradiation device that suppresses heat dissipation to the outside by transferring heat to a reflector, and improves the utilization efficiency of cooling water.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained below with reference to the drawings for one embodiment. (1) is, for example, an ultraviolet irradiation lamp,
(1 covers the back side of this rung (1) and lowers 7M
A reflector with a K opening (3) and a curved reflective surface (2a
) is provided, and the inside of this reflective surface (2) and the cover surface (2b) formed on the body form a flow path for the cooling fluid (4) of the lamp (1) to force the flow of the fluid (4). It is cooled down. (5) is a case, which is arranged at a distance on the outside of the reflector (2), has both side surfaces (5a) extending downward from the opening (3) of the reflector (2), and has an upper surface ( 5b) is disposed in parallel with the cover surface (2b).(6) is a heat transfer layer made by intertwining a large number of metal wires, such as aluminum insulators, with the case 151 and the reflector (2). (7) indicates the object to be irradiated, and t81 indicates the transport body for the object to be irradiated.

Next, the action of this embodiment will be shown. The irradiated light from the lamp +11 is applied to the irradiated object (which is moving with the transport body (8) and performs the required treatment, but a part of the irradiated light is emitted from the case ①). Both sides (5a) (5a) are irradiated with K'. Therefore, the temperature of the irradiated part rises and the conduction heat causes the upper part (5b
) also rises, and the entire case (package) becomes high temperature. However, since the heat transfer layer (6) is interposed between the case (ω and the reflector (2)), The conductive heat is quickly transferred to the reflector (2) by the large number of metal wires forming the heat transfer layer (6), and heat is exchanged with the cooling water (4) flowing through the reflector (2). Therefore, it is possible to suppress the amount of dissipated heat that diffuses outward from the case.

Although the heat transfer layer (6) is made of aluminum wire in this embodiment, it may be made of other metal wires such as those used for pots.

Further, although water is used as the fluid, either fluorocarbon or gas may be used.

As described in detail above, the present invention includes a lamp, a reflector with an opening on the bottom surface that covers the rung by allowing a lamp cooling fluid to flow therein, a case disposed outside the reflector, and the case. This is a light irradiation device equipped with a heat transfer layer consisting of a large number of metal wires with high thermal conductivity that are interposed between the reflectors and transfer heat conducted from the lamp irradiation Q to the case to the reflector. Since the conduction to the case is exchanged with the cooling water in the reflector via the heat transfer layer, it is unlikely to be dissipated to the outside. Therefore, when such a light irradiation device is built into, for example, a printing machine, it has an excellent advantage of preventing adverse thermal effects on the printing machine. There is also an interest portion that allows for effective use of cooling water.

[Brief explanation of the drawing]

The figure is a sectional view of a light irradiation device showing an embodiment of the present invention. (1)...Lamp (2)...Reflector (4)...Fluid (5)...Case (6)...Heat transfer layer substitute Person Patent Attorney Inoue Male

Claims (1)

[Scope of Claims] A lamp; a reflector with an opening at the bottom and facing the lamp and forcibly cooled by a cooling fluid; a case spaced apart from the reflector; A light irradiation device comprising: a reflector; a heat transfer layer in which a large number of intertwined metal heddles interposed between a case and a large number of voids are formed inside the heat transfer layer;