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Light irradiation unit and light irradiation device

A light irradiation device and light irradiation technology are applied in the directions of electric heating devices, ohmic resistance heating devices, electrical components, etc., which can solve the problems of reduced illuminance and achieve the effect of high illuminance uniformity.

Pending Publication Date: 2021-09-17
USHIO DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In detail, among the light beams L1 emitted from the light sources 95a1 and 95a2 near the ends, the light rays in the optical axis direction (+Z direction) are emitted without any problem, but the light rays directed toward the light irradiation unit 90b side with respect to the optical axis are suppressed. The E1 area of ​​the side surface 91a of the housing is blocked, and the illuminance in the traveling direction of the light toward the light irradiation unit 90b side is reduced

Method used

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  • Light irradiation unit and light irradiation device
  • Light irradiation unit and light irradiation device
  • Light irradiation unit and light irradiation device

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Experimental program
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no. 1 approach ＞

[0070] One embodiment of the light irradiation unit will be described with reference to the drawings. In addition, each drawing disclosed in this specification is a figure which shows schematically only. That is, the dimensional ratios in the drawings do not necessarily match the actual dimensional ratios, and the dimensional ratios do not necessarily match between the drawings.

[0071] Hereinafter, description will be made with reference to the XYZ coordinate system as appropriate. In addition, in this specification, when expressing a direction, when distinguishing the orientation of positive and negative, it describes with the sign of plus and minus so that "+X direction" and "-X direction" are added. In addition, when expressing a direction by distinguishing positive and negative orientation, it describes only as "X direction". That is, in this specification, when only "X direction" is described, both "+X direction" and "-X direction" are included. The same applies to t...

no. 2 approach ＞

[0098] The light irradiation unit of the second embodiment will be described. Matters other than those described below can be implemented in the same manner as in the first embodiment. The same applies to the third and subsequent embodiments. Figure 6 is a perspective view of the light irradiation unit 200 . Figure 7 will be Figure 6 An enlarged view of the section of the A3 region parallel to the YZ plane.

[0099] In the light irradiation unit 200 , the second side surface 46 covers the entire heat dissipation member 30 , that is, both the main body 31 (end surface 31 c ) and the fins 32 . The area D2 is an area where the protective member 60 is fixed. The position in the Y-axis direction of the end surface 10 c of the substrate 10 coincides with the position in the Y-axis direction of the end surface 31 c of the main body 31 . When the light irradiation unit 200 is connected in the Y-axis direction, the end surface 10c of the substrate 10 is located on the inner sid...

no. 3 approach ＞

[0101] Figure 8 It is an enlarged view in which only the connecting portion of two light irradiation units (300a, 300b) in the light irradiation device 300 of the third embodiment is viewed from the +Z side to the -Z side. However, for convenience of explanation, the optical member 55 and the lens 22 provided on each light source 20 are not shown.

[0102] The light irradiation device 300 is arranged so that the end faces 10c of the light irradiation units (300a, 300b) of the same specification are in contact with each other. The LED chips (21a to 21c, 21d to 21f) in the light irradiation unit are arranged at a constant interval of a (mm) in the Y-axis direction. The distance in the Y-axis direction between the end surface 10c and the center of the LED chip (21c, 21d) closest to the end surface 10c among the LED chips (21a-21f) is b (mm). Then, the relationship of b=a / 2 is satisfied.

[0103] In the light irradiation device 300 in which the light irradiation units (300a, 3...

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Abstract

The invention relates to a light irradiation unit and a light irradiation device. Relatively high irradiation uniformity is realized in the irradiation area of the light irradiation device formed by connecting the light irradiation units. The light irradiation unit includes a substrate having a longitudinal direction, the longitudinal direction being a first axis direction; multiple light sources arranged along the first axis direction on a first surface of the substrate; a heat dissipation member arranged on a second surface of the substrate opposite to the first surface; and a housing having a pair of first side surfaces holding the heat dissipation member therebetween in a second axis direction orthogonal to the first axis direction along the first surface. The substrate has, at an end portion in the first axis direction, an end surface intersecting the first axis direction. The location of the end surface in the first axis direction is near an edge of the first side surface along the first axis direction. The end surface is exposed from the housing or covered by a detachable protection member.

Description

technical field [0001] The present invention relates to a light irradiation unit and a light irradiation device. Background technique [0002] In recent years, light irradiation devices using light sources such as LEDs have been used for curing printing inks, curing adhesives used for bonding substrates for display manufacturing, and the like. The size of the printing paper and the display substrate on which the light is irradiated varies. Therefore, as a light irradiation device incorporated in a printing ink curing device (printing device) and a display substrate bonding device (display manufacturing device), the market requires To provide a light irradiation device that can flexibly change the irradiation area according to the size of the irradiation target. [0003] In order to respond to this requirement, for example, the following light irradiation devices are known: as Figure 11 As shown, the light irradiation units (90a, 90b) that irradiate light of a predetermined...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/58H01L25/075
CPCH01L33/58H01L25/0753H01L33/483H05B3/0066H01L33/642F26B3/28H05B3/0047H01L33/486
Inventor 横川佳久尾前靖宫内祐介
Owner USHIO DENKI KK
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