KR20210012873A - UV curing device with enhanced cooling efficiency - Google Patents

Abstract

The present invention discloses a UV curing device with enhanced cooling efficiency. The UV curing device includes: a water block having a cross shape; first to fourth PCB substrates attached to lower ends of branches of the cross shape of the water block in four directions, respectively, and having a plurality of UV LEDs for radiating a light source; first to fourth lenses for increasing straightness of output light of the UV LED, and assisting diffusion of the output light; a dispensing nozzle installed at a bottom center of the water block to apply a resin; first to fourth light guiding units installed at a lower portion of a lens unit to guide the output light of the UV LED to an end of the dispensing nozzle, and induce curing at the end of the dispensing nozzle; and a cover unit having a cross shape, and coupled to a lower portion of the water block (100). According to the above embodiment of the present invention, a minimum area for application of a resin for a dam is provided, and a radiated area is implemented in a cross shape, a circular shape, and a donut shape so that UV radiation is performed in a moving direction except for an application section, so that immediate temporal curing of the application section is achieved. For heat generated upon the immediate temporal curing, grease that helps heat transfer is applied to a bottom of an LED circuit, and the water block having a heat sink structure is provided, so that the heat generated from a substrate is efficiently cooled.

Description

UV curing device with enhanced cooling efficiency

The present invention relates to a UV curing device with enhanced cooling efficiency, and more particularly, to have a minimum area for the application of dam resin, and heat the irradiated area so that UV irradiation occurs in the moving direction excluding the area to be applied. By implementing in the form of a cross, a circle, and a donut, the application section is immediately precured, and grease that helps heat transfer is applied to the bottom of the LED circuit for the heat generated at this time, and a water block having a heat sink structure is constructed. It relates to a UV curing device that enhances cooling efficiency to cool the heat generated by it.

The content described below merely provides background information related to the present invention and does not constitute the prior art.

In general, in order to manufacture display devices such as tablets and TVs, a process of bonding glass or the like with a display panel is required.

Recently, in a process for bonding glass to a display panel, a method of applying a resin used as an adhesive material between the glass and the display panel and irradiating ultraviolet rays has been utilized.

In addition, a method of hardening by heat by applying heat after applying the resin by a method other than UV is also utilized. Here, a device that irradiates ultraviolet rays onto a UV resin is referred to as a UV curing device.

When the display panel has a large area, whether it is filled with UV resin or thermosetting resin, a precuring process is added to the process of curing the resin. Temporal curing can be seen as a state in which the adhesive component is not completely hardened.

This temporary hardening process is also used to form a dam that prevents the optical bonding resin filling between the glass and the display panel from overflowing to the outside. That is, by using the temporary curing process, it is possible to prevent overflow of the resin filled therein and to fix the bonded glass and the edge of the display panel.

During such a process, the intensity of the ultraviolet rays irradiated by the heat generated by the UV curing device changes, and proper cooling is required. Natural cooling and forced cooling, such as air cooling and water cooling, are used to cool the heat generated by the UV curing device. This should ensure that the wavelength of ultraviolet rays generated from the UV curing machine does not change and its intensity is maintained in the shortest time. The process can be configured.

On the other hand, in order to form the dam, the resin, which is the process of creating the dam, needs to be temporarily cured in the outer area of the display. To this end, after applying the resin in the dispensing process, the resin must be temporarily cured so that the width and height of the dispensed resin are kept constant.

And for this, it is necessary to induce exposure to the same area after dispensing using a curing device. Also, after the resin is applied using intensive lighting, it must be cured along the same section. A device for cooling the heat generated at this time should be configured so that the performance of the curing device does not deteriorate.

The present invention is to solve the above-described problem, to have a minimum area for the application of the dam resin, and to make the irradiated area to be UV irradiated in the moving direction excluding the area to be applied is crisscross, circle, donut shape By implementing it as an instantaneous temporary hardening of the application section, grease that helps heat transfer is applied to the bottom of the LED circuit for heat generation at this time, and the heat generated by constructing a water block having a heat sink structure is cooled. It is to provide a UV curing device with enhanced cooling efficiency.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The UV curing device with enhanced cooling efficiency according to the features of the present invention for solving these technical problems,

Cross-shaped water block;

First to fourth PCB substrates each attached to the bottom of the four branches of the water block in the four directions of the cross shape and including a plurality of UV LEDs for irradiating a light source;

First to fourth lenses to increase the straightness of the output light of the UV LED and to help diffusion;

A dispensing nozzle installed at the bottom of the center of the water block to apply resin;

First to fourth light guide units installed under the lens unit to guide the direction of the UV LED output light to an end of the dispensing nozzle, and cure at the dispensing nozzle;

And a cover portion formed in a cross shape and coupled to a lower portion of the water block 100.

The cover portion is characterized in that the dispensing nozzle and a cross-shaped opening for outputting the UV LED output light is formed.

The water block is characterized in that a water line for luminous heat generated from the first to fourth PCB substrates is formed.

Grease is applied between the first to fourth PCB substrates and the water block to promote heat transfer.

Each of the first to fourth PCB substrates is characterized by having three UV LEDs.

In an embodiment of the present invention, the area to be irradiated so as to have a minimum area for the application of the dam resin, and to conduct UV irradiation in the moving direction excluding the area to be applied is implemented in the form of a crisscross, circle, and donut. The cooling efficiency of cooling the heat generated by forming a water block having a heat sink structure is strengthened by applying grease that helps heat transfer to the bottom of the LED circuit for instant temporary hardening of the heat generated at this time. A UV curing device can be provided.

1 is a perspective view of a UV curing apparatus with enhanced cooling efficiency according to an embodiment of the present invention.
2 is a view showing a water line of a water block in a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention.
3 is a view showing a lower portion of a water block of a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention.
4 is a cross-sectional view of a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating that a water block temperature is controlled according to a temperature controlled by a chiller (cooling device) connected to the water block.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms used in the present specification are terms used to properly express a preferred embodiment of the present invention, which may vary depending on the intention of users or operators, or customs in the field to which the present invention belongs. Accordingly, definitions of these terms should be made based on the contents throughout the present specification. The same reference numerals in each drawing indicate the same members.

Throughout the specification, when a member is said to be positioned "on" another member, this includes not only the case where a member is in contact with another member, but also the case where another member exists between the two members.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components.

Hereinafter, a UV curing apparatus having enhanced cooling efficiency according to an embodiment of the present invention will be described in detail with reference to the Examples and the drawings. However, the present invention is not limited to these examples and drawings.

1 is a perspective view of a UV curing apparatus with enhanced cooling efficiency according to an embodiment of the present invention.

2 is a view showing a water line of a water block in a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention.

3 is a view showing a lower portion of a water block of a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention.

4 is a cross-sectional view of a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention.

FIG. 5 is a diagram showing that a water block temperature is controlled according to a temperature controlled by a chiller (cooling device) connected to the water block.

1 to 4, a UV curing device with enhanced cooling efficiency according to an embodiment of the present invention,

A cross-shaped water block 100;

First to fourth PCB substrates (111, 112, 113, 114) each attached to the bottom of the four branches of the water block 100, each having a plurality of UV LEDs 115 for irradiating a light source;

First to fourth lenses (121, 122, 123, 124) to increase the straightness of the output light of the UV LED (115) and help diffusion;

A dispensing nozzle 130 installed at a lower center of the water block 100 to apply resin;

Each of the first to fourth lenses 121, 122, 123, 124 is installed below the UV LED 115 to direct the direction of the output light to the end of the dispensing nozzle 130, and the dispensing nozzle ( First to fourth light guides 210 for curing at the ends of 130);

And a cover part 200 formed in a cross shape and coupled to a lower portion of the water block 100.

The cover part 200 is characterized in that a cross-shaped opening 220 for outputting the dispensing nozzle 130 and the UV LED 115 output light is formed.

The water block 100 is characterized in that a water line 140 for luminous heat generated from the first to fourth PCB substrates 111, 112, 113, and 114 is formed.

Referring to FIG. 2, in the waterline, first to fourth PCB substrates 111, 112, 113, and 114 are combined to cool heat generated from the first to fourth PCB substrates 111, 112, 113, and 114. It is formed to penetrate the cross-shaped water block 100 so as to pass through the formed water block portion.

Grease is applied between the first to fourth PCB substrates 111, 112, 113, and 114 and the water block 100 to promote heat transfer.

Each of the first to fourth PCB substrates 111, 112, 113, and 114 is characterized by having three UV LEDs 115.

The operation of the UV curing apparatus having improved cooling efficiency according to an embodiment of the present invention having such a configuration will be described as follows.

First, UV light is output from the plurality of UV LEDs 115 of the first to fourth PCB substrates 111, 112, 113, and 114.

Next, the output light is output through the first to fourth lenses 121, 122, 123, and 124.

In addition, the first to fourth light guide units 210 guide the direction of the UV LED 115 output light to the end of the dispensing nozzle. An example of this state is shown in FIG. 4.

Referring to FIG. 4, the direction of the UV LED 115 output light is illuminated to the end of the dispensing nozzle 130, and light is transmitted to the end of the dispensing nozzle through the first to fourth light guides 210. Focused.

Meanwhile, in order to form a dam in a desired place as needed, the resin is output and applied from the dispensing nozzle 130.

Then, the resin output in the process of generating the dam creates a temporary hardening area in the area outside the display.

To this end, in an embodiment of the present invention, the resin is temporarily cured as soon as the resin is applied in the dispensing process for generating the resin, so that the width and height of the dispensed resin are kept constant.

On the other hand, after dispensing, the same area must be exposed using a curing device. In addition, since the resin is cured while following the same section after the resin is applied using intensive lighting, a lot of heat is generated in the first to fourth PCB substrates 111, 112, 113, and 114.

The heat generated in this way is conducted to the water block 100, and grease is applied between the water block 100 and the first to fourth PCB substrates 111, 112, 113, and 114 to conduct good conduction.

In addition, the cross-shaped water block 100 through which heat is conducted is cooled as water flows through the water line 140.

Referring to FIG. 5, the temperature of the water block may be controlled according to the temperature controlled by a chiller (cooling device) connected to the water block.

In the above embodiment of the present invention, the area to be irradiated so as to have a minimum area for the application of the dam resin, and to conduct UV irradiation in the moving direction excluding the area to be applied is implemented in the form of a crisscross, circle, and donut. The heat generated from the substrate is efficiently cooled by applying a grease that helps heat transfer to the bottom of the LED circuit against the heat generated at this time, and constructing a water block having a heat sink structure. I can make it.

As described above, although the embodiments have been described by the limited embodiments and the drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art. For example, even if the described techniques are performed in a different order from the described method, and/or the described components are combined or combined in a form different from the described method, or are replaced or substituted by other components or equivalents. Appropriate results can be achieved. Therefore, other implementations, other embodiments, and claims and equivalents fall within the scope of the claims to be described later.

Claims (1)

Cross-shaped water block;
First to fourth PCB substrates each attached to the bottom of the four branches of the water block in the four directions, each having a plurality of UV LEDs irradiating a light source;
First to fourth lenses to increase the straightness of the output light of the UV LED and to help diffusion;
A dispensing nozzle installed at the bottom of the center of the water block to apply resin;
First to fourth light guide units installed under the lens unit to guide the direction of the UV LED output light to an end of the dispensing nozzle, and cure at the dispensing nozzle;
Includes; a cover formed in a cross shape and coupled to the lower portion of the water block,
A cross-shaped opening for outputting the dispensing nozzle and the UV LED output light is formed in the cover part,
In the water block, a water line for cooling the heat generated from the first to fourth PCB substrates is formed,
Grease is applied between the first to fourth PCB substrates and the water block to promote heat transfer,
Each of the first to fourth PCB substrates is characterized by having three UV LEDs,
The water line is formed to pass through the inside of the four cross-shaped branches of the water block to which the first to fourth PCB substrates are coupled to cool heat generated from the first to fourth PCB substrates. Characterized by,
Heat generated in the first to fourth PCB substrates is conducted to the water block,
It is characterized in that it cools as water flows through the water line inside the cross-shaped water block where heat is conducted.
Characterized in that the temperature of the water block is controlled according to a temperature controlled by a chiller (cooling device) connected to the water block.
UV curing device with enhanced cooling efficiency.

Images