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Light irradiation device

A technology of light irradiation device and irradiation surface, which is applied to lighting devices, cooling/heating devices of lighting devices, lighting and heating equipment, etc., can solve problems such as profound, reduced luminous efficiency and lifespan, and achieve the effect of less temperature difference

Active Publication Date: 2020-08-04
HOYA CANDEO OPTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, when using light-emitting diodes (LEDs) as light sources, most of the input power is converted into heat. Therefore, the heat generated by the light-emitting diodes (LEDs) itself will cause problems such as reduced luminous efficiency and lifespan.
In addition, in the case of a device equipped with a plurality of light-emitting diodes (LEDs) like the irradiation unit for temporary curing, the number of light-emitting diodes (LEDs) used as a heat source increases, so the problem involved becomes more serious.

Method used

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Examples

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Effect test

no. 1 Embodiment

[0064] Figure 1 to Figure 4 An external view illustrating the structure of the light irradiation device according to the first embodiment of the present invention, Figure 1 ~ Figure 4 These are respectively a plan view, a left side view, a right side view, and a front view of the light irradiation device 1 according to the first embodiment of the present invention. also, Figure 5 to Figure 7 A schematic diagram illustrating the internal structure of the light irradiation device 1 according to the first embodiment of the present invention, Figure 5 It is a figure showing the appearance when the outer casing of the light irradiation device 1 is removed, Figure 6 for use Figure 5 A longitudinal sectional view cut along line A-A of Figure 7 for Figure 5 cross-sectional view of . The light irradiation device 1 of this embodiment is a device mounted on a printing device that uses UV ink that is hardened by irradiation of ultraviolet light to print, and is arranged oppo...

no. 2 Embodiment

[0093] Figure 10 It is a cross-sectional view of a light irradiation device 1A according to a second embodiment of the present invention. Such as Figure 10 As shown, the air intake fans 301A and 303A of the cooling device 300A of the light irradiation device 1A of the present embodiment are respectively installed in the opening 310da formed in the back panel 310d and the opening 310ea formed in the back panel 310e, and the direction of sucking air from the outside is The Z-axis direction is different from the light irradiation device 1 of the first embodiment in this point.

[0094] In this embodiment, air from the outside is sucked into the space R1U (or R2U) by the suction fan 301 (or 303 ), and rectified in the space R1U (or R2U). Then, the air in the space R1U (or R2U) is sent into the space R1L (or R2L), passes between the cooling fins 213 arranged in the space R1L (or R2L), and is exhausted to the outside by the exhaust fan 305 (or 307). gas. Therefore, through the...

no. 3 Embodiment

[0096] Figure 11 It is a cross-sectional view of a light irradiation device 1B according to a third embodiment of the present invention. Such as Figure 11 As shown, the light irradiation device 1B of this embodiment divides the space in the wind tunnel housing 310B of the cooling device 300B into four spaces R1, R2, R3, and R4 along the X-axis direction through three partitions 310c, forming a A structure for cooling the spaces R1, R2, R3, and R4 respectively (that is, a structure with four cooling mechanisms), which is different from the light irradiation device 1 according to the first embodiment and the light irradiation device according to the second embodiment. 1A is different. Furthermore, the three spacers 310c of this embodiment are respectively divided between the second row of cooling fins 213 and the third row of cooling fins 213 from the left side, and between the fourth row of cooling fins 213 and the fifth row of cooling fins. Between the heat dissipation fi...

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Abstract

Provided is a light irradiation apparatus. The light irradiation apparatus which irradiates light of a line shape extending in a first direction and having a predetermined line width in a second direction perpendicular to the first direction, includes a substrate, a plurality of light sources placed on a surface of the substrate side by side at a predetermined interval along the first direction, with a direction of an optic axis being a third direction perpendicular to the first and second directions, a plurality of heat radiation fins standing erect on an opposite surface of the substrate and arranged in rows in the first direction, and N cooling mechanisms placed side by side along the first direction to cover a plurality of heat radiation fins, in which N is an integer greater than or equal to 2. Each of the cooling mechanisms includes a case and a cooling fan.

Description

technical field [0001] The present invention relates to a light irradiation device that arranges a plurality of light sources in a line and irradiates linear light, and more particularly relates to a light irradiation device that includes a cooling mechanism that releases heat emitted from the light sources. Background technique [0002] Conventionally, a printing device that performs printing using UV ink that is hardened by ultraviolet light irradiation is known. In such a printing device, after ink is ejected onto a medium from nozzles of a head, dots formed on the medium are irradiated with ultraviolet light. The dots are hardened and fixed to the medium by the irradiation of ultraviolet light, so it can print well on the medium that is difficult to absorb liquid. Such a printing device is described in Patent Document 1, for example. [0003] A printing device is described in Patent Document 1, which is equipped with a conveying unit for conveying a printing medium; ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V29/74F21V29/67B41F23/04
CPCB41F23/0409B41F23/0453B41F23/04
Inventor 小林纪雄
Owner HOYA CANDEO OPTRONICS
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