JPS62153947A - Irradiation device - Google Patents

Abstract

PURPOSE:To uniform distribution of light and to irradiate uniformly a large irradiated face without positioning for setting lamps for adjusting light distribution by providing plural light emission tubes and a reflecting mirror in holding bodies at high accuracy and unifying them. CONSTITUTION:Plural light emission tubes 7-12 are arranged in parallel. These and a reflecting mirror 15 are held by holding bodies 13, 14 made of heat resisting inorganic material and unified. Both end parts of plural light emission tubes 7-12 are inserted into holes 16 made at specified positions at high accuracy in the holding bodies 13, 14 and these are installed at high accuracy by bonding the light emission tubes and holding bodies 13, 14 with cement 17, 18. Accordingly, positioning for adjusting light distribution is unnecessary, and a small-sized irradiating device that gives uniform distribution of light between irradiated faces is realized, and further, the number of light emission tubes and the shape of the reflecting mirror can be determined optionally according to the size of the irradiated face and intensity of illumination. One unit of cooling fan etc. is enough to cool the irradiating device while using, and this adds much to lowering of cost of the irradiating device and saving of power.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an irradiation device that irradiates light emitted from a light source.

Prior Art A conventional irradiation device had a structure as shown in FIG. That is, a lamp with caps 2 and 3 fixed with cement at both ends of a straight luminous tube 1 is installed in a reflector 4, and a lamp holder 5 is attached to the end of the reflector 4. , 6 in front 2 /, - Tighten caps 2 and 3 to hold the lamp.

Problems to be Solved by the Invention In such conventional irradiation devices, when irradiating a wide irradiation surface with uniform light distribution and high illuminance, a plurality of irradiation devices are used side by side. This caused the following problems. In other words, conventional irradiation devices require a dedicated reflecting mirror for each lamp, require a large space for installation, and are expensive. In addition, in order to obtain a suitable light distribution, it is not only necessary to increase the precision of mounting the irradiation device, but also tends to cause differences in the light distribution between the irradiation surfaces. Further, each irradiation device requires a means such as a cooling fan to cool the irradiation device during use, which increases the cost and power consumption of the irradiation device.

Means for Solving the Problems In the irradiation device of the present invention, holders are provided facing each other, holes are formed in each of the holders, and both ends of a plurality of arc tubes are inserted into the holes. The holder and the plurality of arc tubes are integrated, and the holder is further coated with three pages.

It is characterized in that one reflecting mirror is attached and the holding body is fixed to a pedestal.

The working holder has an integrated structure that allows multiple arc tubes and reflectors to be installed with precision, so the number of arc tubes and the shape of the reflector can be adjusted according to the required irradiation surface area and illuminance. can be determined arbitrarily, and there is no need to adjust the installation position of the lamp for light distribution adjustment.

Embodiment FIGS. 1 and 2 show a front view and a side view of an irradiation device using a xenon Fluorescent lamp in an embodiment of the present invention. In FIGS. 1 and 2, a plurality of arc tubes 7, 8, 9, 10° 11.12 are arranged in parallel, and these and a reflecting mirror 16 are connected to a holder 13 made of a heat-resistant inorganic material such as hard asbestos. .14 is held and integrated. That is, the arc tubes 7 to 12 are arranged in holes 1 that are precisely drilled in holders 13 and 14 that are provided facing each other.
Both ends are inserted into the heat-resistant cement) 17.1
8 is bonded with a material mainly composed of, for example, a mixture of magnesium oxide and zinc oxide, and held on the holders 13 and 14. These arc tubes are connected to lead wires 19 and 20.
．． 21 are connected in series. Further, the reflecting mirror 15 is made of aluminum with a mirror finish, and its both ends are attached to the holder 13, 14 with bolts 22. The holder 13,14 is fixed to a metal base 23.

The arc tubes 7 to 12 are made of quartz glass with a luminous length of 40mm, an outer diameter of 1o, and a diameter of 5mm, with xenon sealed inside, six arc tubes arranged in two rows in parallel, and an outer wall of the arc tube. A starting trigger electrode (not shown) is attached to each of the starting trigger electrodes (not shown).

In the irradiation device having such a structure, both ends of a plurality of arc tubes 7 to 12 are inserted into holes 16 drilled at fixed positions with high precision in the holders 13 and 14, and these arc tubes and the holder 1 are connected to each other.
3.14 with cement) 17.1 seconds, it can be installed with high precision. Therefore, there is no need to install 6 bays 7 for light distribution adjustment, and it is possible to create a compact irradiation device with uniform light distribution between irradiation surfaces. However, the number of arc tubes and the shape of the reflector can be arbitrarily determined according to the width of the irradiation surface and the illuminance. Further, for cooling the irradiation device during use, only one cooling fan or the like is required, and the effect of cost reduction and power saving of the irradiation device is significant.

Effects of the Invention As described above, the irradiation device of the present invention can uniformly irradiate a wide irradiation surface by uniformizing the light distribution without adjusting the installation position of the lamp for light distribution adjustment, and can achieve high illuminance. It can be irradiated with Furthermore, this irradiation device is small and requires only one reflecting mirror and one cooling device, so the cost is low and the power consumption is low.

[Brief explanation of drawings]

1 and 2 are front and side views of an irradiation device according to an embodiment of the present invention, and FIG. 3 is a perspective view of a conventional irradiation device. 7.8,9,10,11.12...°' arc tube, 13.
14-...Holding body, 16...Reflector, 16...
...Cement, 23 ...Pedestal.

Claims (1)

[Claims] holders are provided facing each other, holes are formed in each of the holders, both ends of the plurality of arc tubes are inserted into the holes to integrate the holder and the plurality of arc tubes, and the holder is integrated with the plurality of arc tubes; An irradiation device characterized in that a single reflecting mirror is attached to a holder, and the holder is fixed to a pedestal.