Diode

Abstract

The utility model relates to the technical field of diodes, and discloses a diode, which comprises a diode main body, the diode main body comprises an anode pin, a cathode pin, an LED chip and a gold lead, the LED chip is electrically connected with the cathode pin, one end of the gold lead is electrically connected with the anode pin, and the other end of the gold lead is electrically connected with the cathode pin. One end of the gold wire is electrically connected with the anode pin, the other end of the gold wire is electrically connected with the LED chip, transparent epoxy resin is packaged outside the anode pin, the cathode pin, the LED chip and the gold wire, an annular inner groove is formed in the outer wall of the transparent epoxy resin, a metal heat-conducting sheet is arranged in the annular inner groove, and the metal heat-conducting sheet is electrically connected with the anode pin and the cathode pin. According to the structure, the annular inner groove is formed in the transparent epoxy resin and is matched with the metal heat-conducting sheet, so that the heat dissipation effect of the diode main body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of diodes, in particular to a diode. Background Art

[0002] Light-emitting diodes, or LEDs for short, are a commonly used light-emitting device that emits light by releasing energy through the recombination of electrons and holes. They are widely used in the field of lighting. Light-emitting diodes can efficiently convert electrical energy into light energy and have a wide range of uses in modern society, such as lighting, flat-panel displays, and medical devices. This electronic component appeared as early as 1852. In the early days, it could only emit low-intensity red light. Later, other monochromatic versions were developed, and the light that could be emitted has spread across visible light, infrared light, and ultraviolet light, and the luminosity has also been increased to a considerable level. And its use has also changed from being used as indicator lights and display panels at the beginning.

[0003] With the continuous advancement of technology, light-emitting diodes have been widely used in displays and lighting. The existing diode body is mainly composed of positive and negative pins, a reflector, and a light-emitting chip, and such a structure is sealed in a transparent epoxy resin. When the diode body is running, the temperature of the diode will increase significantly after a long time of operation, which affects the service life of the diode. In order to improve the heat dissipation capacity of the diode, a diode is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a diode in order to solve the above-mentioned problem.

[0005] The technical solution adopted by the utility model is as follows: a diode, comprising a diode body, the diode body comprising a positive pin, a negative pin, an LED chip and a gold wire, the LED chip is electrically connected to the negative pin, one end of the gold wire is electrically connected to the positive pin, the other end of the gold wire is electrically connected to the LED chip, the positive pin, the negative pin, the LED chip and the gold wire are externally encapsulated with transparent epoxy resin;

[0006] An annular inner groove is formed on the outer wall of the transparent epoxy resin. A metal heat conductive sheet is arranged in the annular inner groove. The inner side of the metal heat conductive sheet extends into the interior of the transparent epoxy resin. The metal heat conductive sheet is connected to the positive electrode pin and the negative electrode pin.

[0007] In a preferred embodiment, a reflective cap is disposed on the cathode pin, and the LED chip is disposed in the reflective cap.

[0008] In a preferred embodiment, the metal heat conductive sheet is made of copper.

[0009] In a preferred embodiment, the metal heat conductive sheet is concavely disposed in the annular inner groove.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] In the utility model, this structure arranges an annular inner groove on the outside of the transparent epoxy resin, so that the thickness of the transparent epoxy resin at the annular inner groove is thinner, thereby facilitating heat dissipation. In addition, the heat on the positive pin and the negative pin can be conducted out through the metal heat conductive sheet, thereby improving the heat dissipation efficiency and increasing the service life of the diode body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the diode body in the utility model;

[0013] Figure 2 This is a schematic diagram showing the internal structure of the diode body in the utility model;

[0014] Figure 3 The three-dimensional structure diagram of the metal heat conductive sheet in the utility model is shown in FIG.

[0015] Markings in the figure: 1-diode body, 2-positive pin, 3-negative pin, 4-LED chip, 5-gold wire, 6-transparent epoxy resin, 7-annular inner groove, 8-metal heat conductive sheet, 9-reflective cap. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The following will be combined Figure 1-Figure 3 A diode according to an embodiment of the utility model is described in detail.

[0018] Example:

[0019] The utility model provides a diode, referring to Figure 1 As shown, it includes a diode body 1. The diode body 1 of this structure is connected to a control circuit board and a battery power supply system. Later, the diode body 1 can emit light after being powered on, thereby realizing the lighting function.

[0020] refer to Figure 1 and Figure 2As shown, the diode body 1 includes a positive pin 2, a negative pin 3, an LED chip 4 and a gold wire 5. The LED chip 4 is electrically connected to the negative pin 3, one end of the gold wire 5 is electrically connected to the positive pin 2, and the other end of the gold wire 5 is electrically connected to the LED chip 4. The positive pin 2 and the negative pin 3 of this structure are connected to the circuit board, and then after power is turned on, the positive pin 2, the negative pin 3 and the gold wire 5 make the LED chip 4 in a closed power circuit, so that the LED chip 4 will emit light at this time.

[0021] refer to Figure 1 and Figure 2 As shown, the positive pin 2, the negative pin 3, the LED chip 4 and the gold wire 5 are externally encapsulated with a transparent epoxy resin 6. This structure uses the transparent epoxy resin 6 to seal the positive pin 2, the negative pin 3, the LED chip 4 and the gold wire 5, thereby protecting the structure of the diode body 1. At the same time, the transparent material ensures the light transmission performance.

[0022] refer to Figure 1 , Figure 2 and Figure 3 As shown, the outer wall of the transparent epoxy resin 6 is provided with an annular inner groove 7, and a metal heat conductive sheet 8 is arranged in the annular inner groove 7. The inner side of the metal heat conductive sheet 8 extends into the transparent epoxy resin 6, and the metal heat conductive sheet 8 is connected to the positive electrode pin 2 and the negative electrode pin 3. This structure uses the metal heat conductive sheet 8 to conduct heat from the positive electrode pin 2 and the negative electrode pin 3, thereby improving the heat dissipation effect of the entire diode body 1 and improving the service life of the diode body 1.

[0023] refer to Figure 2 As shown, a reflective cap 9 is arranged on the negative electrode pin 3, and the LED chip 4 is arranged in the reflective cap 9. This structure utilizes the reflective cap 9 to reflect and converge the light source.

[0024] refer to Figure 3 As shown, the material of the metal heat conductive sheet 8 is copper. This structure utilizes the copper metal heat conductive sheet 8 to have good thermal conductivity.

[0025] refer to Figure 2 As shown, the metal heat conductive sheet 8 is concavely arranged in the annular inner groove 7. In this structure, the metal heat conductive sheet 8 will not protrude from the outer wall of the transparent epoxy resin 6, thereby preventing the metal heat conductive sheet 8 from being damaged by being touched, thereby protecting the metal heat conductive sheet.

[0026] The implementation principle of a diode in the embodiment of the present application is as follows: when in use, when the diode body 1 is in operation, the positive pin 2 and the negative pin 3 are connected to the circuit board, and then after power is turned on, the positive pin 2, the negative pin 3 and the gold wire 5 make the LED chip 4 in a closed power circuit, so that the LED chip 4 will emit light at this time;

[0027] When the diode body 1 emits light, the internal structure of the transparent epoxy resin 6 will dissipate heat. At this time, since the thickness of the transparent epoxy resin 6 at the annular inner groove 7 is relatively thin, part of the heat will be quickly dissipated from here. In addition, the heat on the positive pin and the negative pin can be conducted out through the metal heat conductive sheet, thereby improving the heat dissipation efficiency and increasing the service life of the diode body 1.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A diode, comprising a diode body (1), characterized in that: The diode body (1) comprises a positive electrode pin (2), a negative electrode pin (3), an LED chip (4) and a gold wire (5); the LED chip (4) is electrically connected to the negative electrode pin (3); one end of the gold wire (5) is electrically connected to the positive electrode pin (2); the other end of the gold wire (5) is electrically connected to the LED chip (4); the positive electrode pin (2), the negative electrode pin (3), the LED chip (4) and the gold wire (5) are externally encapsulated with a transparent epoxy resin (6); The outer wall of the transparent epoxy resin (6) is provided with an annular inner groove (7), a metal heat conductive sheet (8) is arranged in the annular inner groove (7), the inner side of the metal heat conductive sheet (8) extends into the interior of the transparent epoxy resin (6), and the metal heat conductive sheet (8) is connected to the positive electrode pin (2) and the negative electrode pin (3).

2. A diode as claimed in claim 1, characterized in that: A reflective cap (9) is arranged on the negative electrode pin (3), and the LED chip (4) is arranged inside the reflective cap (9).

3. A diode as claimed in claim 1, characterized in that: The material of the metal heat conducting sheet (8) is copper.

4. A diode as claimed in claim 1, characterized in that: The metal heat conducting sheet (8) is concavely arranged in the annular inner groove (7).

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