Laser diode device

Abstract

The utility model discloses a laser diode device which comprises a heat conduction metal seat, a substrate fixedly installed on the upper surface of the heat conduction metal seat, a light-emitting chip fixedly installed on the upper surface of the substrate, a high-brightness reflective bowl fixedly installed outside the light-emitting chip and located on the upper surface of the heat conduction metal seat, and the high-brightness reflective bowl is of a big-end-up conical structure. The inner wall of the high-brightness reflective bowl is coated with a bright layer, an outer packaging cover is arranged outside the light-emitting chip in a packaging mode, and a protective outer cover is fixedly arranged outside the high-brightness reflective bowl in a covering mode, so that light emitted by the light-emitting chip can be more concentrated, light beams of the light-emitting chip can be effectively prevented from being diffused and emitted towards the two sides, and the light-emitting efficiency is improved. According to the utility model, under the condition of the same power, the high-brightness reflective bowl is additionally arranged, so that the use effects of light condensation and brightness enhancement can be achieved, the irradiation brightness of the LED lamp can be effectively improved, and meanwhile, the reflective irradiation effect of the high-brightness reflective bowl can be effectively improved through the arranged high-reflection white oil.

Description

Technical Field

[0001] This utility model relates to the field of light-emitting diode technology, specifically to a laser diode device. Background Technology

[0002] Laser diodes include single heterojunction, double heterojunction, and quantum well laser diodes. Quantum well laser diodes have the advantages of low threshold current and high output power, making them the mainstream product in the market. Compared with lasers, laser diodes have the advantages of high efficiency, small size, and long lifespan, but their output power is low, linearity is poor, and monochromaticity is not very good, which greatly limits their application in cable television systems and prevents them from transmitting multi-channel, high-performance analog signals.

[0003] In practical applications, the brightness of laser diodes requires increased power of the light-emitting chip. The light-emitting chip generates more heat when operating at high power for a long time. If heat dissipation is not timely, the diode is easily damaged. Therefore, how to further improve the brightness under the same power is a technical problem that the existing technology needs to solve. To this end, this utility model proposes a laser diode device with physical brightness enhancement. Utility Model Content

[0004] The purpose of this invention is to provide a laser diode device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a laser diode device, including a thermally conductive metal base, a substrate fixedly mounted on the upper surface of the thermally conductive metal base, a light-emitting chip fixedly mounted on the upper surface of the substrate, a high-brightness reflector bowl fixedly mounted outside the light-emitting chip and on the upper surface of the thermally conductive metal base, the high-brightness reflector bowl adopts a conical structure design with a larger upper part and a smaller lower part, a bright layer is coated on the inner wall of the high-brightness reflector bowl, an outer encapsulation cover is provided for the outer encapsulation cover of the light-emitting chip, and a protective outer cover is provided for the outer fixing cover of the high-brightness reflector bowl.

[0006] Preferably, the glossy layer coated on the inner wall of the high-gloss reflective bowl is high-reflective white oil.

[0007] Preferably, the protective cover is made of epoxy resin material.

[0008] Preferably, a plurality of heat dissipation fins are fixedly installed on the lower surface of the heat-conducting metal base, and the plurality of heat dissipation fins are circumferentially distributed at equal intervals.

[0009] Preferably, a conductive base is fixedly installed on the lower surface of the thermally conductive metal base.

[0010] Preferably, two pins are fixedly installed on the conductive base, the two pins being a positive pin and a negative pin, and the top of the pins being electrically connected to the substrate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] When in normal use, the light-emitting chip can emit light, and the light beam emitted by the chip can illuminate the surrounding high-brightness reflector. The high-brightness reflector adopts a conical structure design that is larger at the top and smaller at the bottom, which allows the light beam emitted by the chip to be refracted upward and concentrated, thus making the light emitted by the chip more concentrated and effectively preventing the light beam from scattering to both sides. With the addition of the high-brightness reflector, this invention can achieve the effect of focusing and brightening the light under the same power, which can effectively improve the illumination brightness of this invention.

[0013] Meanwhile, the glossy layer coated on the inner wall of the high-brightness reflector bowl is a high-reflective white oil. By using the high-reflective white oil, the reflective effect of the high-brightness reflector bowl can be effectively improved. By using it in conjunction with the reflector bowl, the brightness of the diode device of this utility model can be further improved, resulting in a better brightening effect and excellent performance.

[0014] Meanwhile, the heat dissipation fins of this invention can conduct the heat generated by the light-emitting chip and the substrate through the heat-conducting metal base, thereby exchanging heat with the outside through the heat dissipation fins, which has a good heat conduction and heat exchange effect and can effectively ensure the heat dissipation effect of the diode of this invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of the laser diode according to an embodiment of the present invention;

[0016] Figure 2 This is a bottom-view schematic diagram of the laser diode structure according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the protective cover according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the laser diode according to an embodiment of the present invention.

[0019] In the diagram: 1. Thermally conductive metal base; 2. Substrate; 3. Light-emitting chip; 4. Outer encapsulation cover; 5. High-brightness reflector bowl; 6. High-reflectivity white oil; 7. Protective cover; 8. Heat dissipation fins; 9. Conductive base; 10. Pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a laser diode device, including a thermally conductive metal base 1, a substrate 2 fixedly mounted on the upper surface of the thermally conductive metal base 1, a light-emitting chip 3 fixedly mounted on the upper surface of the substrate 2, and a high-brightness reflector bowl 5 fixedly mounted outside the light-emitting chip 3 and on the upper surface of the thermally conductive metal base 1. The high-brightness reflector bowl 5 adopts a conical structure design with a larger upper part and a smaller lower part. A bright layer is coated on the inner wall of the high-brightness reflector bowl 5, and the bright layer coated on the inner wall of the high-brightness reflector bowl 5 is a highly reflective white oil 6.

[0024] Based on the above structure, when the present invention is in normal use, the light-emitting chip 3 can emit light, and the light beam emitted by the light-emitting chip 3 can illuminate the high-brightness reflector bowl 5 on the periphery. The high-brightness reflector bowl 5 adopts a conical structure design that is larger at the top and smaller at the bottom, so that the light beam emitted by the light-emitting chip 3 can be refracted upward and concentrated, thereby making the light emitted by the light-emitting chip 3 more concentrated and effectively preventing the light beam of the light-emitting chip 3 from scattering to both sides. The present invention, by adding the high-brightness reflector bowl 5, can have the effect of focusing and brightening the light under the same power, and can effectively improve the illumination brightness of the present invention.

[0025] Meanwhile, the glossy layer coated on the inner wall of the high-brightness reflector bowl 5 is a high-reflective white oil 6. By using the high-reflective white oil 6, the reflective irradiation effect of the high-brightness reflector bowl 5 can be effectively improved. By using it in conjunction with the reflector bowl, the brightness of the diode device of this utility model can be further improved, with a better brightening irradiation effect and excellent performance.

[0026] In this embodiment, the outer packaging cover of the light-emitting chip 3 is provided with an outer packaging cover 4, which can encapsulate and protect the internal light-emitting chip 3.

[0027] The high-brightness reflector bowl 5 has an external protective cover 7, which is made of epoxy resin. Epoxy resin can provide good protection while ensuring high brightness and light transmission.

[0028] In this embodiment, a plurality of heat dissipation fins 8 are fixedly installed on the lower surface of the heat-conducting metal base 1, and the plurality of heat dissipation fins 8 are circumferentially distributed at equal intervals.

[0029] In practical use, the heat dissipation fins 8 can be made of high thermal conductivity materials, such as copper and graphite. The heat dissipation fins 8 can conduct the heat generated by the light-emitting chip 3 and the substrate 2 through the thermally conductive metal base 1. In this way, the heat dissipation fins 8 conduct heat to the outside and exchange heat, which has a good thermal conductivity and heat exchange effect and can effectively ensure the heat dissipation effect of the diode of this utility model.

[0030] In this embodiment, in order to ensure the normal pin connection and operation of the laser diode device of this utility model, a conductive base 9 is fixedly installed on the lower surface of the thermally conductive metal base 1. Two pins 10 are fixedly installed on the conductive base 9, which are the positive terminal pin and the negative terminal pin, respectively. The top of the pin 10 is electrically connected to the substrate 2.

[0031] Working principle: Those skilled in the art can use the laser diode device of this utility model through conventional methods. When this utility model is in normal use, the light-emitting chip 3 can perform light emission processing. The light beam emitted by the light-emitting chip 3 can illuminate the high-brightness reflector bowl 5 on the periphery. The high-brightness reflector bowl 5 adopts a conical structure design that is larger at the top and smaller at the bottom, so that the light beam emitted by the light-emitting chip 3 can be refracted upward and concentrated, thereby making the light emitted by the light-emitting chip 3 more concentrated and effectively preventing the light beam of the light-emitting chip 3 from scattering to both sides. This utility model can achieve the effect of focusing and brightening the light under the same power by adding the high-brightness reflector bowl 5, which can effectively improve the illumination brightness of this utility model.

[0032] Meanwhile, the glossy layer coated on the inner wall of the high-brightness reflector bowl 5 is high-reflective white oil 6. By using the high-reflective white oil 6, the reflective irradiation effect of the high-brightness reflector bowl 5 can be effectively improved. By using it in conjunction with the reflector bowl, the brightness of the diode device of this utility model can be further improved, with a better brightening irradiation effect and excellent performance.

[0033] Meanwhile, the heat dissipation fins 8 of this invention can conduct the heat generated by the light-emitting chip 3 and the substrate 2 through the heat-conducting metal base 1, thereby conducting heat exchange with the outside through the heat dissipation fins 8, which has a good heat conduction and heat exchange effect and can effectively ensure the heat dissipation effect of the diode of this invention.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A laser diode device comprising a heat conducting metal mount (1), characterized in that, The upper surface of the heat-conducting metal base (1) is fixedly installed with a substrate (2), the upper surface of the substrate (2) is fixedly installed with a light-emitting chip (3), the outside of the light-emitting chip (3) and on the upper surface of the heat-conducting metal base (1) is fixedly installed with a high-brightness light-reflecting bowl (5), the high-brightness light-reflecting bowl (5) adopts a conical structure design with the upper part being large and the lower part being small, the inner wall of the high-brightness light-reflecting bowl (5) is coated with a light layer, the outer package cover of the light-emitting chip (3) is provided with an outer package cover (4), and the outside of the high-brightness light-reflecting bowl (5) is fixedly installed with a protective cover (7).

2. A laser diode device according to claim 1, characterized in that: The light layer coated on the inner wall of the high-brightness light-reflecting bowl (5) is high-reflectivity white oil (6).

3. A laser diode device according to claim 1, wherein: The protective cover (7) is made of epoxy resin material.

4. The laser diode device of claim 1, wherein: The lower surface of the heat-conducting metal base (1) is fixedly installed with a plurality of heat-dissipating fins (8), and the plurality of heat-dissipating fins (8) are distributed at equal intervals in a circle.

5. The laser diode device of claim 1, wherein: The lower surface of the heat-conducting metal base (1) is fixedly installed with a conductive base (9).

6. A laser diode device according to claim 5, wherein: The conductive base (9) is fixedly installed with two pin feet (10), the two pin feet (10) are respectively a positive electrode pin foot and a negative electrode pin foot, and the top end of the pin foot (10) is electrically connected with the substrate (2).

Images