CN221150057U

CN221150057U - Exhaust formula cut straightly LED structure

Info

Publication number: CN221150057U
Application number: CN202322520047.8U
Authority: CN
Inventors: 郑军; 林嘉磊; 陈晶; 陈锦
Original assignee: HUANGSHAN GUANGYUAN PHOTOELECTRIC TECHNOLOGY CO LTD
Current assignee: HUANGSHAN GUANGYUAN PHOTOELECTRIC TECHNOLOGY CO LTD
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-06-14
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses an exhaust type direct-insert LED structure which comprises a lens, an anode pin and a cathode pin, wherein a bottom support is arranged at the lower end of the lens, the bottom support and the lens are of an integrated structure, the anode pin and the cathode pin penetrate through the bottom support and are fixedly connected with the bottom support, the parts of the anode pin and the cathode pin above the bottom support are packaged in the lens, the edge of the bottom support protrudes out of the lens to form a cap extension, a gas collecting groove is arranged on the bottom surface of the bottom support, the anode pin and the cathode pin are positioned in the gas collecting groove, a gas outlet is arranged on the cap extension, and the gas outlet is communicated with the gas collecting groove through a gas channel. The utility model has novel structure, can effectively discharge flux gas, improve welding quality and improve welding reliability.

Description

Exhaust formula cut straightly LED structure

Technical Field

The present utility model relates to a direct-insert LED, and more particularly, to an exhaust direct-insert LED.

Background

The direct-insert LED is also called an insert LED, is an energy-saving and environment-friendly illumination material for visible light, and can convert electric energy into a solid semiconductor device for visible light. The light-emitting principle of the LED is that current is passed through the compound semiconductor, and excess energy is released in the form of light by the combination of electrons and holes, so as to achieve the effect of light emission. The wavelength of the LED for visible light is 400-700 nm.

After the LED is inserted directly, the LED is welded on the circuit board through wave soldering, because the bottom support of the existing LED is flat bottom, no gap exists between the bottom support of the LED and the circuit board, and the flux gas generated during welding cannot be discharged through the gap between the element hole on the circuit board and the pins (the anode pins and the pins) on the LED, so that the gas is nest between the circuit board and the tin liquid, and the phenomenon of tin frying and floating height caused by thermal expansion of the flux gas during welding is easily caused, and the reliability of welding is affected.

Disclosure of utility model

The utility model provides an exhaust type direct-insert LED structure which is novel in structure, can effectively exhaust flux gas, improves welding quality and improves welding reliability, and aims to solve the problems that flux gas generated during wave soldering of the conventional direct-insert LED package cannot be exhausted and is easy to cause cold soldering and empty soldering.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model discloses an exhaust type direct-insert LED structure, which comprises a lens, an anode pin and a cathode pin, wherein the lower end of the lens is provided with a base, the base and the lens are in an integrated structure, the anode pin and the cathode pin penetrate through the base and are fixedly connected with the base, the parts of the anode pin and the cathode pin above the base are encapsulated in the lens, the edge of the base protrudes out of the lens to form a cap extension, the bottom surface of the base is provided with a gas collection groove, the anode pin and the cathode pin are positioned in the gas collection groove, the cap extension is provided with an exhaust port, and the exhaust port is communicated with the gas collection groove through an air passage. After the plug-in unit is plugged, flux gas generated during welding can escape into the gas collection groove through gaps between element holes on the circuit board and pins (anode pins and pins) on the plug-in light emitting diode and then is guided to the gas exhaust port through the gas channel to be exhausted, so that nest gas between the circuit board and tin liquid is effectively avoided, the welding quality is improved, and the welding reliability is improved.

Preferably, the lens has a cylindrical shape, and an upper end surface of the lens is a spherical surface or an ellipsoidal surface. The upper end face of the lens is spherical or ellipsoidal, and the luminous power and luminous intensity of the lens are good.

Preferably, the shoe and the lens are a homogeneous integral structure made of epoxy resin. The refractive index of the epoxy resin plays a role in transition between the chip and air, and the luminous efficiency of the chip is improved.

Preferably, the exhaust port is a notch.

Preferably, the gas collecting groove is a circular groove. The gas collecting groove is circular, no dead angle exists, and the flux gas is easy to discharge.

Preferably, the depth of the gas collecting channel is 1/4-1/3 of the thickness of the base. The depth of the gas collecting channel is 1/4-1/3 of the thickness of the bottom support, so that the capacity can be ensured, and the structural strength of the bottom support can be ensured.

Therefore, the utility model has the following beneficial effects: through the cooperation between gas collection recess, air flue and the gas vent of collet bottom, the welding flux gas that produces in time discharges when enabling the welding to effectively avoid becoming between circuit board and the molten tin nest gas, improve welding quality, improve welding reliability.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a bottom view of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1 taken along A-A.

In the figure: lens 1, positive electrode pin 2, negative electrode pin 3, collet 4, cap extension 5, gas collection recess 6, gas vent 7, air flue 8.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

An exhaust type direct-insert LED structure shown in fig. 1 comprises a lens 1, an anode pin 2 and a cathode pin 3, wherein the lens is cylindrical, the end face of the upper end of the lens is provided with a spherical surface, the lower end of the lens is provided with a base 4, the base and the lens are of a homogeneous integrated structure made of epoxy resin, the anode pin and the cathode pin penetrate through the base and are fixedly connected with the base, the parts of the anode pin and the cathode pin above the base are encapsulated in the lens, the edge of the base protrudes out of the lens to form a cap extension 5, the bottom surface of the base is provided with a gas collecting groove 6 (shown in fig. 2 and 3), the gas collecting groove is a circular groove, the depth of the gas collecting groove is 1/4 of the thickness of the base, the anode pin and the cathode pin are positioned inside the gas collecting groove, the cap extension is provided with two exhaust ports 7 which are notch, and the exhaust ports are communicated with the gas collecting groove through an air passage 8.

The application principle of the utility model is as follows: after the positive electrode pin and the negative electrode pin are inserted into corresponding element holes on the circuit board, the circuit board is placed into a crest welder for crest welding, and when the circuit board is conveyed to the crest of tin liquid, flux gas generated during welding can escape into a gas collection groove through a gap between the element holes on the circuit board and pins (the positive electrode pin and the pins) on the plug-in light emitting diode to be concentrated, and then is guided to an exhaust port through an air passage to be discharged.

The above-described embodiment is only a preferred embodiment of the present utility model, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims

1. The utility model provides an exhaust formula cut straightly LED light emitting diode structure, includes lens (1), anodal pin (2) and negative pole pin (3), the lens lower extreme is equipped with collet (4), collet and lens structure as an organic whole, anodal pin and negative pole pin pass the collet and with collet fixed connection, anodal pin and negative pole pin are located the part encapsulation of collet top in the lens, its characterized in that, the edge protrusion of collet forms cap extension (5) outside the lens, the bottom surface of collet is equipped with gas collection recess (6), and anodal pin and negative pole pin are located the gas collection recess inside, be equipped with gas vent (7) on the cap extension, the gas vent is linked together with the gas collection recess through air flue (8).

2. The exhaust type direct-insert LED light emitting diode structure according to claim 1, wherein the lens has a cylindrical shape, and an upper end surface of the lens is formed as a spherical surface or an ellipsoidal surface.

3. The exhaust type direct-insert LED light emitting diode structure according to claim 1 or 2, wherein the mount and the lens are a homogeneous integrated structure made of epoxy resin.

4. The exhaust type direct-insert LED light emitting diode structure according to claim 1, wherein the exhaust port is a notch.

5. The exhaust type direct-insert LED light emitting diode structure according to claim 1, wherein the gas collecting groove is a circular groove.

6. The exhaust type direct-insert LED structure according to claim 1 or 5, wherein the depth of the gas collecting groove is 1/4-1/3 of the thickness of the base.