Light irradiation device and light irradiation system

Abstract

The purpose of this invention is to provide a light irradiation device and system that exhibits minimal degradation even in high-temperature and high-humidity environments and can be used repeatedly over a long period. The light irradiation device 10 of this invention comprises: a heat dissipation section; a plurality of LED substrates 29 disposed on the outer peripheral surface of the heat dissipation section and arranged with a plurality of LEDs 28 irradiating light of a specific wavelength; a synthetic quartz glass tube 30, which functions as a window material when sealing the plurality of LED substrates 29; and a sealing section 35, which seals the heat dissipation section and the end of the synthetic quartz glass tube 30.

Claims

1. A light irradiation device comprising: a heat dissipation section; a plurality of LED substrates disposed on the outer peripheral surface of the heat dissipation section and arranged with a plurality of LEDs irradiating light of a specific wavelength; a synthetic quartz glass tube that functions as a window material when sealing the plurality of LED substrates; and a sealing section that seals the ends of the heat dissipation section and the synthetic quartz glass tube, and provides an airtight seal such that external air does not intrude into the space surrounded by the heat dissipation section and the synthetic quartz glass tube; the synthetic quartz glass tube is a polygonal tube formed by bonding a plurality of synthetic quartz glass plates together with an adhesive; the sphericity of the polygonal synthetic quartz glass tube is within 1 mm on any surface.

2. The light irradiation device as described in claim 1, wherein, The shortest distance from the LED to the synthetic quartz glass tube is 10-25 mm; and the shortest distance between adjacent LEDs is 5-15 mm.

3. The light irradiation device as described in claim 1, wherein, The wavelength of the light emitted by the LED is selected from the range of 350 to 500 nm.

4. The light irradiation device as claimed in claim 1, which is equipped with a cooling fan that supplies air drawn in from the outside to the interior of the heat dissipation section.

5. The light irradiation device as described in claim 1, wherein, The synthetic quartz glass tube has an anti-reflective film formed on its surface.

6. The light irradiation apparatus as described in claim 1, wherein, The adhesive is transparent after bonding.

7. A light irradiation device comprising: a heat dissipation section; a plurality of LED substrates disposed on the outer peripheral surface of the heat dissipation section and arranged with a plurality of LEDs irradiating light of a specific wavelength; a synthetic quartz glass tube that functions as a window material when sealing the plurality of LED substrates; a sealing section that seals the ends of the heat dissipation section and the synthetic quartz glass tube in a way that prevents external air from intruding into the space surrounded by the heat dissipation section and the synthetic quartz glass tube; a control circuit section that supplies power to the LED substrates; and a separation component that separates air drawn in from the outside into air that cools the control circuit section and air that does not cool the control circuit section but is blown into the interior of the heat dissipation section.

8. The light irradiation device as claimed in claim 7, which includes a cooling fan that supplies air drawn in from the outside to the interior of the heat dissipation section and the control circuit section.

9. A light illumination system comprising a plurality of light illumination devices as described in any one of claims 1 to 8.

10. The light illumination system as described in claim 9, wherein, Among the plurality of light irradiation devices, the foremost and the rearmost light irradiation devices are equipped with cameras.

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