LED lamp bead capable of emitting light from multiple surfaces

Abstract

An LED lamp bead capable of emitting light from multiple faces comprises a support and two electrodes arranged on the support, the support is of a hemispheroid structure, and a plurality of installation grooves are formed in the support. The lamp bead further comprises LED chips, the LED chips are mounted in the mounting grooves respectively, and the mounting grooves are filled with fluorescent glue to package the LED chips. The refraction piece comprises a cover body and a refraction part formed at the top of the cover body, the cover body covers the LED chip, the inner side surface of the cover body defines an incident surface for light to enter, and the refraction part extends out of the mounting cavity and is exposed out of the fluorescent glue. And the surface of the refraction part is arranged to be an emergent surface for emitting light rays. The light emitted by the chip is refracted by the refraction pieces, so that the light can be emitted in multiple directions, and the lamp bead can emit the light in multiple directions and at a larger angle under the mutual cooperation of the refraction pieces.

Description

Technical Field

[0001] The invention relates to the technical field of LED lighting, and in particular to an LED lamp bead capable of emitting light from multiple sides. Background Art

[0002] Light-emitting diode (LED) is a semiconductor light-emitting device that uses the recombination of electrons and holes to generate photons. LED has the advantages of high luminous efficiency, good color rendering, low power consumption, environmental protection and energy saving, high safety and long service life.

[0003] At present, most LED lamp beads are SMD lamp beads, which are generally provided with a bracket with a mounting groove inside the bracket. The LED chip is sealed in the mounting groove with fluorescent glue. During the lighting process, the light emitted by the LED chip is emitted along the fluorescent glue to achieve lighting. However, the light will be restricted by the outline of the mounting groove during the emission process, resulting in the range and angle of the light emission depending on the outline of the mounting groove. Therefore, the lighting angle is severely limited, and multi-faceted and multi-angle lighting cannot be achieved. Summary of the invention

[0004] The purpose of the present invention is to provide an LED lamp bead that can emit light from multiple sides. In order to solve the above technical problems, the present invention adopts the following technical solutions: An LED lamp bead capable of emitting light from multiple sides, comprising a bracket and two electrodes arranged on the bracket, wherein the bracket is in a hemispherical structure, and a plurality of mounting grooves are arranged on the bracket, wherein the mounting grooves include a main groove arranged on the top of the bracket and auxiliary grooves arranged at equal intervals along the circumferential direction on the side of the bracket; the lamp bead also comprises: LED chips, the LED chips include a plurality of LED chips corresponding to the mounting grooves and connected to the electrodes through gold wires respectively, the plurality of LED chips are mounted in the mounting grooves respectively, and the mounting grooves are filled with fluorescent glue to encapsulate the LED chips; A refracting member, wherein the refracting member includes a cover body and a refracting portion formed on the top of the cover body, wherein the refracting portion is a polygonal column structure, wherein the cover body is placed in the mounting groove and is encapsulated by the fluorescent glue, and wherein the cover body is used to cover the LED chip, wherein the inner surface of the cover body defines an incident surface for light to be incident upon, wherein the refracting portion extends out along the mounting cavity and leaks out of the fluorescent glue to the outside, and wherein the surface of the refracting portion is configured as an exit surface for light to be emitted.

[0005] Furthermore, the inner wall of the mounting groove is configured as a smooth total reflection surface, and a light leakage gap is defined between the cover body and the LED chip.

[0006] Furthermore, an arc transition surface is provided between the end of the refraction portion and the side wall.

[0007] Furthermore, a curved compound eye array is provided on at least the end surface of the refraction portion.

[0008] Furthermore, the corners of the refraction portion are arranged as arc transition surfaces.

[0009] The beneficial effects produced by the present invention are as follows: In the technical solution provided by the present invention, the bracket is set as a hemispherical structure, which can make the bracket have a larger angle and there is no sharp corner spacing between multiple planes. The auxiliary grooves are set on the arc surface of the side of the hemisphere and are spaced at equal intervals along the circumferential direction. The main grooves are set at the top position. The LED chip is encapsulated in the mounting groove by fluorescent glue. At the same time, the cover body of the refraction member is also encapsulated in the mounting groove by fluorescent glue and covers the LED chip, so that the light of the LED chip can be injected into the refraction member at the incident surface. The refraction part of the refraction member extends out of the mounting groove and protrudes from the mounting groove sealed by the fluorescent glue. The light is emitted at the exit surface of the refraction part. Since the refraction part is set as a multi-prism structure, the light can be emitted from the prism surface, thereby increasing the emission angle and area of ​​the light. Under the mutual cooperation of multiple refraction members, the irradiation angle and area of ​​the lamp beads can be increased to achieve a multi-faceted light-emitting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the present invention.

[0011] Figure 2 It is a cross-sectional view of the present invention.

[0012] Figure 3 It is a cross-sectional view of the refracting element in the present invention.

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the refraction element in the present invention.

[0014] In the figure: 100- bracket; 100- mounting slot; 111- main slot; 112- secondary slot; 120- chip; 200- refracting element; 210- cover body; 220- refracting part; 211- incident surface; 221- exit surface; 113- reflecting surface; 114- fluorescent glue; 201- compound eye array. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0016] The embodiment of the present invention provides an LED lamp bead capable of emitting light from multiple sides. Specifically, a plurality of LED chips 120 are arranged on a bracket 100, and a refraction member 200 is arranged in a mounting groove 110 for mounting the LED chip 120. Specifically, the cover 210 of the refraction member 200 covers the LED chip 120, so that the light of the LED chip 120 can be incident along the incident surface 211 of the cover 210 and emitted from the exit surface 221 on the surface of the refraction portion 220. It is worth noting that the refraction portion 220 is a multi-faceted structure, preferably a triangular prism in the present embodiment, and can also be a quadrangular prism or a pentagonal prism in other embodiments. Therefore, there can be multiple exit surfaces 221 of the refraction portion 220, so that the light can be irradiated in multiple directions under the reflection of the refraction portion 220. At the same time, since a plurality of LED chips 120 and a plurality of refraction members 200 are arranged on the bracket 100, the lamp bead can be irradiated in multiple directions, thereby increasing the irradiation area and irradiation angle of the lamp bead.

[0017] Specifically, Figure 1-4 As shown, the present embodiment provides an LED lamp bead capable of emitting light from multiple sides, including a bracket 100 and two electrodes arranged on the bracket 100, the bracket 100 is a hemispherical structure, a plurality of mounting grooves 110 are arranged on the bracket 100, the mounting grooves 110 include a main groove 111 arranged on the top of the bracket 100 and auxiliary grooves 112 arranged at equal intervals on the side of the bracket 100 along the circumferential direction; the lamp bead is also provided with an LED chip 120 and a refracting member 200, specifically, the LED chip 120 includes a plurality of electrodes corresponding to the mounting grooves 110 and connected to the electrodes through gold wires respectively, and the plurality of LED chips 120 are respectively attached to the mounting grooves 110. Installed in the mounting groove 110, the mounting groove 110 is filled with fluorescent glue 114 to package the LED chip 120; the refraction member 200 includes a cover body 210 and a refraction portion 220 formed on the top of the cover body 210, the refraction portion 220 is a multi-prism structure, the cover body 210 is placed in the mounting groove 110 and is packaged by the fluorescent glue 114, and the cover body 210 will be used to cover the LED chip 120, the inner surface of the cover body 210 defines an incident surface 211 for light to enter, the refraction portion 220 extends along the mounting cavity and leaks out of the fluorescent glue 114 to the outside, and the surface of the refraction portion 220 is set as an exit surface 221 for light to exit.

[0018] That is, the bracket 100 is set to a hemispherical structure, which can make the bracket 100 have a larger angle and have no corners between multiple planes. The auxiliary grooves 112 are set on the arc surface of the side of the hemispherical body and are spaced at equal intervals along the circumferential direction. The main grooves 111 are set at the top position. The LED chip 120 is encapsulated in the mounting groove 110 by the fluorescent glue 114. At the same time, the cover body 210 of the folding member 200 is also encapsulated in the mounting groove 110 by the fluorescent glue 114, and covers the LED chip 120. , so that the light of the LED chip 120 can be incident on the incident surface 211 into the deflecting member 200, the deflecting portion 220 of the deflecting member 200 extends out of the mounting groove 110 and protrudes from the mounting groove 110 sealed by the fluorescent glue 114, and the light is emitted from the exit surface 221 of the deflecting portion 220. Since the deflecting portion 220 is set as a multi-prism structure, the light can be emitted from the prism surface, thereby increasing the emission angle and area of ​​the light. With the mutual cooperation of multiple deflecting members 200, the irradiation angle and area of ​​the lamp beads can be increased, and the effect of multi-faceted lighting can be achieved.

[0019] In this embodiment, the inner wall of the mounting groove 110 is set as a smooth total reflection surface 113, and a light leakage gap is defined between the cover body 210 and the LED chip 120. After the LED chip 120 emits light, it is inevitable that part of the light will not enter the refraction member 200 along the incident surface 211. Therefore, a light leakage gap for light leakage is set between the cover body 210 and the LED chip 120, so that the light can directly irradiate the reflection surface 113 of the mounting groove 110 through the light leakage gap, and the light is reflected by the reflection surface 113 and then emitted through the fluorescent glue 114. It should be pointed out that when the cover body 210 covers the LED chip 120 as much as possible, in order to allow all the light to enter along the incident surface 211, the LED chip 120 will be completely sealed during the experiment, that is, the cover body 210 and the bottom of the mounting groove 110 are connected to each other, so that the LED chip 120 is completely sealed. The ED chip 120 is completely sealed inside, but this is often not conducive to the heat dissipation of the chip 120. Therefore, the cover 210 and the bottom of the mounting groove 110 cannot be used to completely seal the LED chip 120, and can only be covered as much as possible. However, light will inevitably leak out, and the leaked part of the light will be blocked and refracted by the edge of the cover 210, which will cause light loss in the process. However, after increasing the distance between the cover 210 and the LED chip 120 and forming a light leakage gap with a certain spacing distance, the light can be smoothly emitted along the light leakage gap and reflected by the reflection surface 113 out of the mounting groove 110, thereby reducing light loss and ensuring the heat dissipation capacity of the LED chip 120.

[0020] In this embodiment, an arc transition surface is provided between the end of the refraction portion 220 and the side wall. By providing an arc transition surface between the end of the refraction portion 220 and the side wall, when the light is emitted from the transition portion between the bending portion and the side wall, the light can be emitted more evenly, thereby ensuring uniform light intensity.

[0021] In this embodiment, in order to improve the energy uniformity and softness of the pipeline, a curved compound eye array 201 is provided on at least the end surface of the refraction portion 220. In this embodiment, the compound eye array 201 is provided on the end surface of the refraction portion 220. It can be understood that the compound eye array 201 can also be provided on the entire surface of the refraction portion 220.

[0022] In this embodiment, the corners of the refraction portion 220 are set as arc transition surfaces. As described above, by setting the corners as arc transition surfaces, the light can be emitted more evenly at the position where the two corners are connected, avoiding the straight line emitted along the corners and parallel to the prism axis.

[0023] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. An LED lamp bead capable of emitting light from multiple sides, comprising a bracket and two electrodes arranged on the bracket, characterized in that: The bracket is a hemispherical structure, and a plurality of mounting grooves are arranged on the bracket, and the mounting grooves include a main groove arranged on the top of the bracket and auxiliary grooves arranged at equal intervals on the side of the bracket along the circumferential direction; the lamp beads also include: LED chips, the LED chips include a plurality of LED chips corresponding to the mounting grooves and connected to the electrodes through gold wires respectively, the plurality of LED chips are mounted in the mounting grooves respectively, and the mounting grooves are filled with fluorescent glue to encapsulate the LED chips; A refracting member, wherein the refracting member includes a cover body and a refracting portion formed on the top of the cover body, wherein the refracting portion is a polygonal column structure, wherein the cover body is placed in the mounting groove and is encapsulated by the fluorescent glue, and wherein the cover body is used to cover the LED chip, wherein the inner surface of the cover body defines an incident surface for light to be incident upon, wherein the refracting portion extends out along the mounting cavity and leaks out of the fluorescent glue to the outside, and wherein the surface of the refracting portion is configured as an exit surface for light to be emitted.

2. The LED lamp bead capable of emitting light from multiple sides according to claim 1, characterized in that: The inner wall of the mounting groove is configured as a smooth total reflection surface, and a light leakage gap is defined between the cover body and the LED chip.

3. The LED lamp bead capable of emitting light from multiple sides according to claim 1, characterized in that: An arc transition surface is arranged between the end of the refraction portion and the side wall.

4. The LED lamp bead capable of emitting light from multiple sides according to claim 3, characterized in that: A curved compound eye array is arranged on at least the end surface of the refraction portion.

5. The LED lamp bead capable of emitting light from multiple sides according to claim 1, characterized in that: The corners of the refraction portion are arranged as arc transition surfaces.

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