Patent ID: 12234978

REFERENCE SIGNS

1, glass window;2, LED chip;3, base;4, sealing ring;5, rear plate;6, wire welding plate;7, positive and negative electrodes;8, insulator; and9, air suction and filling hole.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The following clearly and completely describes the technical scheme in the embodiments of the present disclosure with reference to the attached figures in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. Based on the embodiment in the present disclosure, all other embodiments obtained by the ordinary technical staff in the art under the premise of without contributing creative labor belong to the scope protected by the present disclosure.

The present disclosure aims to provide a high-power LED light source module with optimized heat dissipation so as to solve the problems existing in the prior art. The maximum heat flux density, heat resistance and temperature gradient of the light source are greatly improved, and the requirement on refrigeration is reduced. Meanwhile, fatigue damage to welding caused by thermal stress during long-pulse-width repeated frequency working is reduced, the reliability of the light source is improved, and the service life of the light source is prolonged.

To make the foregoing objective, features and advantages of the present disclosure clearer and more comprehensible, the present disclosure is further described in detail below with reference to the attached figures and specific embodiments.

As shown inFIG.1andFIG.2, the present disclosure provides a high-power LED light source module with optimized heat dissipation, including:a base3, a water channel being formed in the back surface of the base3, and cooling water being connected into the water channel;a rear plate5, the back surface of the base3being equipped with the rear plate5, and the rear plate5being used for pressing and sealing a sealing ring4and the water channel;an LED chip board, the LED chip board being directly brazed on the front surface of the base3and including a plurality of LED chips2which are welded in series with gold wires;positive and negative electrodes7, insulators8being arranged at the bottom of the base3, the front ends of the positive and negative electrodes7being connected with the LED chip2by welding through gold wires after respectively passing through the insulators8, and the rear ends of the positive and negative electrodes7being welded with a wire welding plate6which is used for welding wires; the positive and negative electrodes7pass through the insulators8to be fixed to the base3, and the wire welding plate6is welded with the positive and negative electrodes7to facilitate the welding of wires; anda glass window1, the front surface of the base3being located on the outer side of the LED chip board and provided with the glass window1by sealing.

In one of the embodiments, the base3is made of copper and gold-plated materials with good heat conduction.

In one of the embodiments, a winding water channel is formed in the back surface of the base3, and concave points similar to horseshoe prints are machined in the channel. The function of the concave points is to enhance the heat exchange efficiency of cooling water. After the sealing ring4is installed at the water channel, the water channel is tightly sealed with the rear plate5.

In one of the embodiments, the LED chip2is made of ultra-thin beryllium oxide ceramic heat sink (0.1 mm) and supplemented by an artificial diamond film coating, and the high-power and large-size LED light source is directly brazed on the base3to achieve high-efficiency heat dissipation for the chip.

In one of the embodiments, the glass window1and the base3are fixed together with glue, internal air is pumped out through the air suction and filling hole, nitrogen is filled, and then the air suction and filling hole is sealed.

In one of the embodiments, an air suction hole and an air filling hole are formed in the base3, and the air suction hole is used for connecting air suction equipment and pumping out air in the cavity between the base3and the glass window1; and during vacuumizing, the air filling hole is sealed and closed, and the air suction hole is sealed after vacuumizing is completed through air suction hole. The air filling hole is used for connecting a nitrogen source and filling nitrogen into the cavity between the base3and the glass window1; and when nitrogen is filled, the air suction hole is sealed and closed, and the air filling hole is sealed after nitrogen is filled through the air filling hole.

In one of the embodiments, an air suction and filling hole9is formed in the base3, the air suction and filling hole9is used for connecting air suction equipment and pumping out air in the cavity between the base3and the glass window1, and the air suction and filling hole9is also used for connecting a nitrogen source and filling nitrogen into the cavity between the base3and the glass window1.

In one of the embodiments, the LED chips2are all square chips, and the LED chip board is formed by series welding of gold wires, and the shape of the LED chip board is matched with the front opening of the base3.

According to the high-power LED light source module with optimized heat dissipation, the high-power LED chip serves as a near-infrared light source to replace a traditional edge-emitting laser (EEL) semiconductor laser. The main parameters, such as wavelength, practical effect, power density and electro-optical conversion efficiency, of the high-power LED chip are basically consistent with the traditional EEL semiconductor laser. However, a vertical heat transfer mode is adopted to replace a horizontal heat transfer mode, and square chip cutting is adopted to replace long-strip-shaped chip cutting, so that the maximum heat flux density, heat resistance and temperature gradient of the light source are greatly improved, and the requirement (the minimum temperature needs to be higher than 10° C.) on refrigeration is reduced. In daily use, natural heat dissipation can be used, and refrigeration below ambient temperature is unnecessary. Meanwhile, fatigue damage to welding caused by thermal stress during long-pulse-width repeated frequency working is reduced, the reliability of the light source is improved, and the service life of the light source is prolonged.

It needs to be noted that for those skilled in the art, obviously the present disclosure is not limited to the details of the exemplary embodiment, and the present disclosure can be achieved in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Therefore, for every point, the embodiments should be regarded as exemplary embodiments and are unrestrictive, the scope of the present disclosure is restricted by the claims appended hereto, therefore, all changes, including the meanings and scopes of equivalent elements, of the claims are aimed to be included in the present disclosure, and any mark of attached figures in the claims should not be regarded as limitation to the involved claims.

Specific examples are used for illustration of the principles and implementation methods of the present disclosure. The description of the above-mentioned embodiments is used to help illustrate the method and its core principles of the present disclosure. In addition, those skilled in the art can make various modifications in terms of specific embodiments and scope of application in accordance with the teachings of the present disclosure. In conclusion, the content of this specification shall not be construed as a limitation to the present disclosure.