CN108662444B

CN108662444B - Ultraviolet LED light source device

Info

Publication number: CN108662444B
Application number: CN201710204150.8A
Authority: CN
Inventors: 郑舜川
Original assignee: Shenzhen Youluyuan Technology Co ltd
Current assignee: Shenzhen Youluyuan Technology Co ltd
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2021-01-05
Anticipated expiration: 2037-03-30
Also published as: CN108662444A

Abstract

The invention relates to an ultraviolet light LED light source device which comprises an LED light source module and a heat dissipation module, wherein the LED light source module comprises a substrate and LED light source units which are arranged on the substrate in an array mode, the substrate is arranged on the heat dissipation module, the ultraviolet light LED light source device also comprises an oxygen-free gas source, the oxygen-free gas source is used for blowing oxygen-free gas to an irradiation surface of the LED light source module, and an oxygen-free environment is manufactured on the irradiation surface of the LED light source module. Above-mentioned ultraviolet light LED light source device is owing to be equipped with the oxygen-free gas source, when carrying out the ultraviolet irradiation, the oxygen-free gas source blows the irradiation face with the oxygen-free gas, can dilute the oxygen concentration who shines in the face upper portion space, and the oxygen concentration can be reduced to very low degree to the blowing that lasts to can form the oxygen-free environment. Because the ultraviolet rays are irradiated on the irradiation surface, ozone is not generated in an oxygen-free environment, thereby ensuring the quality of ultraviolet irradiation curing.

Description

Ultraviolet LED light source device

Technical Field

The invention relates to an LED light source, in particular to an ultraviolet LED light source device.

Background

The ultraviolet LED light source device is mostly used in processes of curing by ultraviolet light irradiation, such as photolithography curing and printing curing processes.

The ultraviolet rays can cause oxygen in the air to be ionized, so that ozone is generated. The ozone activity is high, and ozone is generated in the area where the ultraviolet energy is concentrated, that is, the ultraviolet irradiation surface, which is the area where the curing material is located. In some processes, such as printing processes, certain printed materials can be oxidized by ozone, resulting in reduced print yields. Ozone also absorbs and blocks ultraviolet rays, so that the ultraviolet energy irradiation efficiency is lowered.

In addition, in the printing process, the uv LED light source generally provides a high-density and high-energy light source to realize the scanning irradiation curing process. However, the conventional ultraviolet light LED light source generally has the problems of insufficient light concentration ratio, high remote density and insufficient energy.

Disclosure of Invention

Accordingly, it is necessary to provide an ultraviolet LED light source device that can prevent ozone generated by contact between ultraviolet rays and oxygen during irradiation from absorbing and blocking ultraviolet rays, thereby reducing the efficiency of ultraviolet energy irradiation and oxidizing a curing material.

An ultraviolet light LED light source device comprises an LED light source module and a heat dissipation module, wherein the LED light source module comprises a substrate and LED light source units which are arranged on the substrate and are arranged in an array manner, and the substrate is arranged on the heat dissipation module; the oxygen-free gas source is used for blowing oxygen-free gas to the irradiation surface of the LED light source module, and an oxygen-free environment is manufactured on the irradiation surface of the LED light source module; the shielding component is arranged around the LED light source module in a surrounding mode and extends to the irradiation surface, and a relatively closed space is isolated between the LED light source module and the irradiation surface.

In one embodiment, the oxygen-free gas source is arranged inside the heat dissipation module and blows gas outwards through a gas outlet arranged on the heat dissipation module.

In one embodiment, the air outlet is arranged between the LED light source modules.

In one embodiment, the LED light source module further comprises a light shield covering all the LED light source modules, and the air outlet is arranged outside the light shield.

In one embodiment, the shielding assembly comprises a plurality of shielding lines extending from the LED light source module to the irradiation surface, and the plurality of shielding lines are stacked.

In one embodiment, the heat dissipation module has an arched cross section, the substrate of the LED light source module is provided with a plurality of LED light source units on one side thereof protruding toward the inner concave surface of the heat dissipation module, and the substrate is provided with a plurality of LED light source units on one side thereof bent in a multi-plane continuous manner so as to have an arched cross section bent in a multi-edge continuous manner, so that light emitted by the plurality of LED light source units is concentrated to form a linear light spot.

In one embodiment, the LED light source unit comprises a plurality of LED lamp beads and a light-gathering transparent cover body covering the LED lamp beads; the LED lamp beads are arranged in spaced grooves formed in the substrate, and the light-gathering transparent cover body is connected with the substrate in a sealing mode and is filled with nitrogen.

In one embodiment, the device further comprises a gas recovery device, wherein the gas recovery device is communicated with the oxygen-free gas source and is used for recovering the gas blown into the environment and delivering the treated gas to the oxygen-free gas source.

In one embodiment, the heat dissipation module further includes a water cooling unit.

In one embodiment, the substrate is a ceramic substrate or a metal substrate.

Above-mentioned ultraviolet light LED light source device is owing to be equipped with the oxygen-free gas source, when carrying out the ultraviolet irradiation, the oxygen-free gas source blows the irradiation face with the oxygen-free gas, can dilute the oxygen concentration who shines in the face upper portion space, and the oxygen concentration can be reduced to very low degree to the blowing that lasts to can form the oxygen-free environment. Because the ultraviolet rays are irradiated on the irradiation surface, ozone is not generated in an oxygen-free environment, thereby ensuring the quality of ultraviolet irradiation curing. A relatively closed space is formed between the LED light source module and the irradiation surface, so that gas can be prevented from being dissipated too fast, an anaerobic environment can be formed more quickly, and less anaerobic gas is used.

In addition, the LED light source device is provided with a light cover, or the plate body of the heat dissipation module is bent and the LED light source module is arranged on the heat dissipation module, so that the purpose of concentrating light can be achieved, and better linear light spots are formed.

Drawings

Fig. 1 is a schematic structural diagram of an ultraviolet LED light source device according to an embodiment;

FIG. 2 is a schematic structural diagram of an LED light source module;

FIG. 3 is a schematic structural diagram of an ultraviolet LED light source device according to another embodiment;

fig. 4a is a schematic diagram of a plate structure of a heat dissipation module;

fig. 4b is a schematic cross-sectional view of a plate body of the heat dissipation module;

FIG. 5 is a schematic diagram of a system of an ultraviolet LED light source device for a printing process;

fig. 6a to 6e show different structures of the uv LED light source device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Fig. 1 is a schematic structural diagram of an ultraviolet LED light source device according to an embodiment. The ultraviolet LED light source device 10 includes LED light source modules 100 arranged in an array, a heat dissipation module 200, an oxygen-free gas source 300, and a shielding assembly 600. The oxygen-free gas source 300 is used for blowing gas to the irradiation surface 90 of the LED light source module 100, and creating an oxygen-free environment on the irradiation surface 90 of the LED light source module 100. The shielding component 600 is disposed around the LED light source module 100 and extends to the irradiation surface 90, and a relatively closed space is isolated between the LED light source module 100 and the irradiation surface 90.

The ultraviolet light LED light source device 10 is provided with the oxygen-free gas source 300, so that when ultraviolet light irradiation is carried out, the oxygen-free gas source 300 blows oxygen-free gas to the irradiation surface 90, the oxygen concentration in the upper space of the irradiation surface 90 can be diluted, and the oxygen concentration can be reduced to a very low degree through continuous blowing, so that an oxygen-free environment can be formed. When the ultraviolet rays irradiate the irradiation surface 90, ozone is not generated in an oxygen-free environment, so that the quality of ultraviolet irradiation curing is ensured. A relatively closed space is formed between the LED light source module 100 and the illumination surface 90, which can prevent gas from escaping too quickly, can form an oxygen-free environment more quickly, and uses less oxygen-free gas.

As shown in fig. 2, the LED light source module 100 may include a substrate 110 and LED light source units 120 arranged on the substrate 110 in an array, wherein the substrate 110 is disposed on the heat dissipation module 200. The substrate 110 may be provided with a driving circuit for driving the LED light source unit 120 to emit light. In this embodiment, the LED light source unit 120 is an ultraviolet light source. The LED light source unit 120 may include 1, 2, or more LED lamp beads. The LED light source unit 120 generates a large amount of heat when operating. Through setting up base plate 110 on heat dissipation module 200, can conduct heat to heat dissipation module 200 to distribute away through heat dissipation module 200, reach the purpose of cooling.

In one embodiment, the oxygen-free gas source 300 may be disposed inside the heat dissipation module 200 and blows the gas out through a gas outlet (not shown) disposed on the heat dissipation module 200. Since the irradiation surface 90 of the LED light source module 100 is an area where an oxygen-free environment needs to be manufactured, and the oxygen-free gas source 300 is integrated in the heat dissipation module 200, which can just blow from the heat dissipation module 200 to the irradiation surface 90, the space is saved.

In addition, when the oxygen-free gas is in the heat dissipation module 200, a part of heat can be absorbed and blown onto the irradiation surface 90, so that the heat dissipation module 200 can be better dissipated.

In one embodiment, the oxygen-free gas may be nitrogen, an inert gas, a mixture of nitrogen and an inert gas, or a mixture of inert gases.

In one embodiment, the air outlet may be provided between the LED light source units 120. The LED light source units 120 are arranged in an array, and the air outlets may be dispersed at a plurality of positions between the LED light source units 120. The air outlets can be uniformly distributed or can be intensively distributed.

In other embodiments, the oxygen-free gas source 300 may be separately provided as shown in fig. 1. The oxygen-free gas source 300 may be in a plurality in number, surrounding the LED light source module 100. It is also possible to have only one oxygen-free gas source 300 and to arrange a plurality of gas outlets around the LED light source module 100.

The direction of the gas outlet of the oxygen-free gas source 300 can be adjusted to meet the requirement of blowing gas at a fixed point. The oxygen-free gas source 300 may further comprise a flow adjustment module for adjusting the flow of the blowing gas to accommodate different blowing volume requirements in different spaces.

In one embodiment, the shielding assembly 600 includes a plurality of shielding lines extending from the LED light source module 100 to the irradiation surface 90, and the plurality of shielding lines are stacked. The shield wire is typically a thin flexible wire. When the density of the plurality of shield lines stacked is sufficiently high, a relatively sealed environment may be formed. The shielding assembly formed by the stacking arrangement of the shielding lines can conveniently form different irradiation distances and has a better sealing effect. When the irradiation surface is moved in or out, a closed space can be formed quickly. In other embodiments, the shutter assembly 600 may be in other forms, such as a flexible film body, etc.

The shielding assembly 600 is disposed around the LED light source module 100, and may form a cylindrical, square-cylindrical or other cylindrical enclosure. The shielding line is a flexible silk thread with the diameter of 50-100 microns.

In one embodiment, as shown in fig. 3, the uv LED light source device 10 further includes a light cover 400 covering all the LED light source modules 100. If the oxygen-free gas source 300 is integrated in the heat dissipation module 200, the gas outlet can only be disposed outside the mask 400. The light shield 400 is a curved surface structure, and is used for collecting light of the LED light source module 100, preventing the energy of ultraviolet light from being dissipated, and enhancing the irradiation effect of the ultraviolet LED light source device 10.

In one embodiment, the ultraviolet LED light source device 10 may further include a gas recycling device (not shown). The gas recovery device is communicated with the oxygen-free gas source 300, and is used for recovering the gas blown into the environment, and delivering the treated gas to the oxygen-free gas source 300.

In one embodiment, as shown in fig. 4a, the cross section of the heat dissipation module 200 is an arch, the substrate 110 of the LED light source module 100 is convex toward the concave surface of the heat dissipation module 200, and the plurality of LED light source units 120 are disposed on the substrate 110, and the surface of the substrate 110 on which the plurality of LED light source units 120 are disposed is an arch in which the plurality of LED light source units are continuously bent in a multi-plane shape, so that the cross section of the arch is continuously bent in a multi-edge shape, so that light emitted from the plurality of LED light source units is concentrated to form a linear light spot, as shown in fig. The plurality of LED light source units 120 are respectively disposed on a plurality of planes continuously bent, so that light emitted from the plurality of LED light source modules 100 is concentrated to form a linear light spot. The dimensions of the plurality of bent planar structures may be the same or different, as long as the LED light source module 100 can be placed. The angles of the bends at the connection of the planes of the bends may be the same or different, as long as the light emitted by the LED light source module 100 can be concentrated on the illumination surface 90.

It is understood that the oxygen-free gas source 300 may be disposed in the heat dissipation module 200 having a multi-plane continuous bending heat dissipation contact surface. And an air outlet is formed in the heat dissipation module 200. Or the heat dissipation module 200 is disposed around the heat dissipation module 200.

The mask 400 may also be added to the structure shown in FIG. 4a to further enhance the light concentration effect.

In one embodiment, the heat dissipation module 200 may include a metal heat sink. The metal heat sink may be an aluminum heat sink or a copper heat sink. The heat dissipation module 200 may include a portion directly attached to the LED light source module 100, may be a plate as shown in fig. 1 or a bent plate as shown in fig. 4a, and may further include fins for assisting heat dissipation, and is installed on a surface facing away from the LED light source module 100. The auxiliary heat dissipation fins can increase the surface area of heat dissipation and accelerate the speed of heat dissipation to the air. Further, the heat dissipation module 200 may further include a water cooling unit (not shown). The water cooling unit may be disposed inside the heat dissipation module 200, for example, a water flow pipe is disposed on the surface of or inside the heat dissipation module 200, and water flow is introduced into the water flow pipe to remove heat. Thereby achieving the purpose of better heat dissipation.

Fig. 5 shows an application of the ultraviolet LED light source device 10 in a printing process. As shown in fig. 5, the system for performing the printing process includes the ultraviolet LED light source device 10, a tray 30 for cooperatively conveying the sheet 20 to be printed, and a conveying chain 40. After the drawing is drawn on the paper 20, the drawing is conveyed to a position below the ultraviolet LED light source device 10 through the chain wheel 30 and the conveying chain 40, and the ultraviolet LED light source device 10 irradiates ultraviolet rays 102 (invisible to the naked eye, for the purpose of illustration) onto the paint on the paper 20 to cure the paint, thereby curing the drawing on the paper 20.

Fig. 6a is a specific structure corresponding to this manner of use. The heat dissipation module 200 is an inwardly concave block structure, and a plurality of through holes are formed in the main body for introducing cooling water. When the cooling water flows in the through hole, the heat generated by the ultraviolet LED light source module 100 can be taken away, and the cooling effect is improved. One surface of the substrate 110 of the uv LED light source module 100 is convex toward the heat dissipation module 200 and close to the heat dissipation module 200. The other surface of the substrate 110 of the ultraviolet LED light source module 100 is provided with LED light source units 120, and the LED light source units 120 are arranged in an array. The heat sink module 200 further has a fastener 204 extending inward on one side of the concave surface, and the fixing shaft 500 is inserted between the fastener 204 and a gap on one side of the substrate 110, so as to firmly fix the ultraviolet LED light source module 100.

The substrate 110 may be a ceramic substrate or a metal substrate, which has a good heat dissipation effect. A heat conducting adhesive and a graphene heat sink may be further disposed between the contact surfaces of the substrate 110 and the heat dissipation module 200 to achieve a better heat dissipation effect.

The oxygen-free gas source 300 is disposed at a side of the heat dissipation module 200, and may include a fixing pipe 310 fixed to a main body of the heat dissipation module 200 and an outlet pipe 320 disposed in the fixing pipe 310. Wherein, an air outlet 322 can be opened on the air outlet pipe 320. The oxygen-free gas is discharged through the gas outlet 322 on the gas outlet pipe 320.

As shown in fig. 6b, the outlet pipe 320 may also be disposed in the substrate 110, and exhaust gas through an outlet port opened on the substrate 110 and the outlet pipe 320.

As shown in fig. 6c, the uv LED light source device 10 may further include a light shield 400 for collecting light.

As shown in fig. 6d, the substrate 110 may have an arc shape on which the LED light source unit 120 is disposed. The LED light source unit 120 may include a plurality of LED beads 121 and is wrapped by a light-gathering transparent cover 122. A plurality of LED lamp beads 121 are arranged on the substrate 110 at intervals, and are integrally arranged in an arc shape along with the substrate 110. The substrate 110 can be provided with spaced grooves 111, and the LED lamp beads 121 are disposed in the grooves 111, so that light emitted by the LED lamp beads 121 cannot interfere with each other, and the purpose of light condensation can be achieved through the light condensation effect of the light condensation transparent cover body 122. The light-gathering transparent cover 122 is hermetically connected to the substrate 110. The light-gathering transparent cover 122 may be filled with nitrogen gas. The number of the LED lamp beads 121 in each LED light source unit 120 may be the same or different.

As shown in fig. 6e, the substrate 110 may also be provided with an outlet pipe 320.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An ultraviolet light LED light source device comprises an LED light source module and a heat dissipation module, wherein the LED light source module comprises a substrate and LED light source units which are arranged on the substrate and are arranged in an array manner, and the substrate is arranged on the heat dissipation module; the oxygen-free gas source is used for blowing oxygen-free gas to the irradiation surface of the LED light source module, and an oxygen-free environment is manufactured on the irradiation surface of the LED light source module; the shielding component is arranged around the LED light source module in a surrounding manner and extends to the irradiation surface, and a relatively closed space is isolated between the LED light source module and the irradiation surface;

the oxygen-free gas source is arranged inside the heat dissipation module and blows gas outwards through a gas outlet arranged on the heat dissipation module.

2. The ultraviolet LED light source device as claimed in claim 1, wherein the gas outlet of the oxygen-free gas source is adjustable in orientation for blowing gas at a fixed point.

3. The uv LED light source device of claim 2, wherein the air outlet is disposed between the LED light source modules.

4. The uv LED light source device according to claim 2, further comprising a light shield covering all LED light source modules, wherein the air outlet is disposed outside the light shield.

5. The uv LED light source device of claim 1, wherein the shielding assembly comprises a plurality of shielding lines extending from the LED light source module to the illumination surface, the plurality of shielding lines being stacked.

6. The uv LED light source device according to claim 1, wherein the heat dissipation module has an arch-shaped cross section, the LED light source module has a plurality of LED light source units provided on a surface of a substrate thereof that protrudes toward an inner concave surface of the heat dissipation module, and the substrate has a plurality of LED light source units provided thereon that are continuously bent in a multi-plane shape and have an arch-shaped cross section that is continuously bent in a multi-side shape, so that light emitted from the plurality of LED light source units is concentrated to form a linear spot.

7. The ultraviolet LED light source device as claimed in claim 1, wherein the LED light source unit includes a plurality of LED beads and a light-condensing transparent cover covering the LED beads; the LED lamp beads are arranged in spaced grooves formed in the substrate, and the light-gathering transparent cover body is connected with the substrate in a sealing mode and is filled with nitrogen.

8. The uv LED light source apparatus of claim 1, further comprising a gas recovery device in communication with the oxygen-free gas source for recovering gas blown into the environment and treated for delivery to the oxygen-free gas source.

9. The uv LED light source device of claim 1, wherein the heat sink module further comprises a water cooling unit.

10. The uv LED light source device of claim 1, wherein the substrate is a ceramic substrate or a metal substrate.